.308 Winchester

#2,601
Finally got out to try some N540 today.

Custom model 700, 20" lilja 1:9 with an m852 match chamber.

Lapua brass, cci br2, 168 smk at 2.800"

20250221_113439.jpg
 
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#2,603
straightshooter1 said:
Now you just have to test that 43.7 gr load over 20 shots or so to see if it'll repeat. ;)
Click to expand...
Yeah that's in the works. Hell has frozen over here today in Texas and it's a freezing cold 36 degrees outside. (Sarcasm) I'm trying to find the motivation but the wood stove in the house just feels too good. I think I've got fifteen more primed cases in the loading block ready to go.

I'm also going to work on a load for the LMT with once fired federal brass. Probably start around 42gr for that one.
 
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#2,604
The ten shot fell apart. I had three that I called my bad. But there's something else.

How critical is primer seating depth ? These cases have been primed a while, and I can not for the life of me remember what I primed them with. But seating depth was all over the map.

The groups I posted were all .008" deep. What I just shot was anywhere from .008" to .002". And the group reflected it. Sd doubled as well.

I'm out of prepped brass for this one. On to the gasser load.
 
#2,605
XP1K said:
The ten shot fell apart. I had three that I called my bad. But there's something else.

How critical is primer seating depth ? These cases have been primed a while, and I can not for the life of me remember what I primed them with. But seating depth was all over the map.

The groups I posted were all .008" deep. What I just shot was anywhere from .008" to .002". And the group reflected it. Sd doubled as well.

I'm out of prepped brass for this one. On to the gasser load.
Click to expand...
Primer seating depth can make a difference depending on what's actually going on with how the anvil is actually being seated. There is some leeway, but .006 variance is quite a bit, though that too depends on how much variance there is in the depth of the primer pockets.

Another aspect to getting consistent ignition is the variance in the primer compound that can upset SD's quite a bit. I was a skeptic about weight sorting primers, where there were a couple reloaders who ran a test for weight sorting that appeared to show a significant difference between the lightest and heaviest. I decided to run the test myself and sorted some CCI-400's for my .308 bolt gun. I took the lightest that weighed 3.36 gr and the heaviest that weighed 3.50 grs and used them in my best loads where my primer pockets are uniform and the seating depth was consistent at .004" below flush. The 3.36 gr primers produced an average velocity of 2,688 fps with an ES of 31 and an SD of 7.1. The 3.50 grs produced an average velocity of 2,695 with an ES of 15 and an SD of 4.7. These were for 10 shots and upon repeating 10 shots with those weights, it virtually the same . . . like I had to use 3.48 grs (had no more 3.50's) and got an average velocity of 2,695 with an ES of 14 and and SD of 4.8. While the ES and SD's were still pretty good on the 3.36's, they were all the same and so I'd really expect that. I should have mixed a batch with both weights to show what kind of SD one gets when mixing the lowest with the highest. Looking at data I've collected overs some years for CCI-400's with this load, I just don't get SD's or ES's that low when using unsorted primers. So, does it make a difference? Yes! But does it make enough of a difference to be worth the time it take to sort primers? I'd say NO! . . . for the vast majority of reloaders. :giggle:
 
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#2,610
straightshooter1 said:
Primer seating depth can make a difference depending on what's actually going on with how the anvil is actually being seated. There is some leeway, but .006 variance is quite a bit, though that too depends on how much variance there is in the depth of the primer pockets.

Another aspect to getting consistent ignition is the variance in the primer compound that can upset SD's quite a bit. I was a skeptic about weight sorting primers, where there were a couple reloaders who ran a test for weight sorting that appeared to show a significant difference between the lightest and heaviest. I decided to run the test myself and sorted some CCI-400's for my .308 bolt gun. I took the lightest that weighed 3.36 gr and the heaviest that weighed 3.50 grs and used them in my best loads where my primer pockets are uniform and the seating depth was consistent at .004" below flush. The 3.36 gr primers produced an average velocity of 2,688 fps with an ES of 31 and an SD of 7.1. The 3.50 grs produced an average velocity of 2,695 with an ES of 15 and an SD of 4.7. These were for 10 shots and upon repeating 10 shots with those weights, it virtually the same . . . like I had to use 3.48 grs (had no more 3.50's) and got an average velocity of 2,695 with an ES of 14 and and SD of 4.8. While the ES and SD's were still pretty good on the 3.36's, they were all the same and so I'd really expect that. I should have mixed a batch with both weights to show what kind of SD one gets when mixing the lowest with the highest. Looking at data I've collected overs some years for CCI-400's with this load, I just don't get SD's or ES's that low when using unsorted primers. So, does it make a difference? Yes! But does it make enough of a difference to be worth the time it take to sort primers? I'd say NO! . . . for the vast majority of reloaders. :giggle:
Click to expand...
I just recently started paying attention to primer seating depth.
I still don't sort them.

I've noticed my most consistent groups and sd have been with primers at .002-.004 deep in my 300winmag. Most of my seating depths right now are just luck of the draw with certain shell holder/brass/cartridge combinations.

Using my rcbs hand primer for the winmag I get a dead nuts .004" seat. Priming in my press gives me a consisten .002"

I also have a Sinclair hand priming tool that I used to adjust different seating depths all the way up to .008"

Past .004 I start getting unexplained fliers and more vertical groups.

The best loads today with the 308 were .008 deep. I don't know. I'm going to shoot for a consistent .004-.006 and roll with it.
 
#2,612
XP1K said:
I just recently started paying attention to primer seating depth.
I still don't sort them.

I've noticed my most consistent groups and sd have been with primers at .002-.004 deep in my 300winmag. Most of my seating depths right now are just luck of the draw with certain shell holder/brass/cartridge combinations.

Using my rcbs hand primer for the winmag I get a dead nuts .004" seat. Priming in my press gives me a consisten .002"

I also have a Sinclair hand priming tool that I used to adjust different seating depths all the way up to .008"

Past .004 I start getting unexplained fliers and more vertical groups.

The best loads today with the 308 were .008 deep. I don't know. I'm going to shoot for a consistent .004-.006 and roll with it.
Click to expand...
The Sinclair Hand Priming Tool is a very good tool that can produce pretty consistent results . . . in terms of how far below flush primers are seated. The thing is, different brands of primers have different cup dimension, where they'll be different in cup height (without the primer that tends to set higher than the edge of the cup). Then you also have differences in primer primer pocket depths from one brand of brass to another.

For example:
* My .308 SRP Lapua brass primer pockets are .121" deep.
* My .308 SRP Peterson brass pockets are .129" deep
* My .308 SRP ADG brass pockets are .125" deep
* My .308 LRP Lapua brass pockets are .128:

(cup heights here don't include the anvil sticking up higher)
* CCI 400 cup height is .109"
* CCI 450 cup height is .113"
* Federal 205M cup height is .1075"
* Remington 7 1/2 cup height is .110"

* CCI 200 cup height is .118"
* Federal 210 cup height is .117"
* Remington 9 1/2 cup height is .119"
* Winchester LRP cup height is .121"

If I want to seat my primers to the ideal where the cup in just touching the bottom of the primer pocket, for my .308 LRP Lapua brass at .128" deep and using the Federal 210" that are .117" in height, that primer will be seated .011" below flush. No, the cup doesn't have to be touching the bottom of the primer pocket to get good ignition, but it does help with consistency.

The problem with various brands of brass is they don't have very consistent pocket depths. You may have consistent seating depth as measured from the base of the case, but the space between the primer and the bottom of the primer pocket can vary a lot with the consistent seating depth. Again, for the vast majority of reloaders, it really just doesn't matter for the very small improvement in SD's that this helps with.
 
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#2,613
The problem with all the measuring is that nothing is consistent.
None of the brands case heads are even flat....high spots and uneven on all.
Even the new Lapua to fired LC.
So nothing to accurately measure from as exact....just close somtimes but with lots of variation from case brands, inside the same brand, primer pocket depth, flatness, diameter, and flash hole size and possibly burrs.
Then there are the primers...no two mixtures that make up the detonation are exactly the same, its a blended mixture, not to mention the physical differences between the anvil and cup variations in composition and size.
Can not measure or weight anything exactly to come up with anything but a general conclusion, that might have some bering on the real outcome.

With that it appears some primers will have less S/ D over a few shots with certain powders, at a certain pressure in your particular hand load...But each primer cup, each primer mixture, consistently, and weight varies, each anvil varies.
Then ya have case volume inconsistencies and neck tension inconsistencies, plus bullet inconsistencies, and powder burn inconsistencies.
Hopeless for exacting...but when it comes together and you aquire low S/D keep doing what your doing.

I never worry about primers just seat them.

I been running a odd ball little AR 15 cartridge called the 338 Spectre with a 16" barrel. It runs single S/Ds with almost every bullet 160 gr to 350 gr. Super or subsonic ...completely loaded on a Dillion progressive.
Depending on case LP primer or SR primer, different brands with no difference still single digit S/D. Kind of incredible but its high load density and 100 % burnt according to QL with a moderate Lee factory crimp die.
Notice the 350 gr is machined on my lathes to make it a bore ride, another variable.

All these different primers SR & LP and 4 different cases but not mixed with every bullet from 160 gr to 350 gr subs all single digit S/Ds fired in an AR 15 auto loader, sub or super, and accurate with them all.
Unusual...maybe, but all these variables seem to make little difference in this cartridge.
So I'm not gonna worry about primers, unless I notice a difference...just seat em and go.
But if all that measuring and weighing works for anyone keep on doing it.

But maybe it's cartridge volume balanced to bore ratio, to powder volume, to % burnt, rather than primer that makes the difference.
My 6 Dasher is like that too...just seat the primer, no other concern needed.
 

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#2,614
45-90 said:
The problem with all the measuring is that nothing is consistent.
None of the brands case heads are even flat....high spots and uneven on all.
Even the new Lapua to fired LC.
So nothing to accurately measure from as exact....just close somtimes but with lots of variation from case brands, inside the same brand, primer pocket depth, flatness, diameter, and flash hole size and possibly burrs.
Then there are the primers...no two mixtures that make up the detonation are exactly the same, its a blended mixture, not to mention the physical differences between the anvil and cup variations in composition and size.
Can not measure or weight anything exactly to come up with anything but a general conclusion, that might have some bering on the real outcome.

With that it appears some primers will have less S/ D over a few shots with certain powders, at a certain pressure in your particular hand load...But each primer cup, each primer mixture, consistently, and weight varies, each anvil varies.
Then ya have case volume inconsistencies and neck tension inconsistencies, plus bullet inconsistencies, and powder burn inconsistencies.
Hopeless for exacting...but when it comes together and you aquire low S/D keep doing what your doing.

I never worry about primers just seat them.

I been running a odd ball little AR 15 cartridge called the 338 Spectre with a 16" barrel. It runs single S/Ds with almost every bullet 160 gr to 350 gr. Super or subsonic ...completely loaded on a Dillion progressive.
Depending on case LP primer or SR primer, different brands with no difference still single digit S/D. Kind of incredible but its high load density and 100 % burnt according to QL with a moderate Lee factory crimp die.
Notice the 350 gr is machined on my lathes to make it a bore ride, another variable.

All these different primers SR & LP and 4 different cases but not mixed with every bullet from 160 gr to 350 gr subs all single digit S/Ds fired in an AR 15 auto loader, sub or super, and accurate with them all.
Unusual...maybe, but all these variables seem to make little difference in this cartridge.
So I'm not gonna worry about primers, unless I notice a difference...just seat em and go.
But if all that measuring and weighing works for anyone keep on doing it.

But maybe it's cartridge volume balanced to bore ratio, to powder volume, to % burnt, rather than primer that makes the difference.
My 6 Dasher is like that too...just seat the primer, no other concern needed.
Click to expand...
Since you're here, how many firings on your sig hybrid cases now ? I'm up to 4 on mine. I've shot up to 47gr of varget in them but settled at 45 for my current load. Which isn't too crazy. I know you lean on yours pretty good. I'm curious how many firings they're capable of before that steel head decides it's ready to check out.
 
#2,615
45-90 said:
The problem with all the measuring is that nothing is consistent.
None of the brands case heads are even flat....high spots and uneven on all.
Even the new Lapua to fired LC.
So nothing to accurately measure from as exact....just close somtimes but with lots of variation from case brands, inside the same brand, primer pocket depth, flatness, diameter, and flash hole size and possibly burrs.
Then there are the primers...no two mixtures that make up the detonation are exactly the same, its a blended mixture, not to mention the physical differences between the anvil and cup variations in composition and size.
Can not measure or weight anything exactly to come up with anything but a general conclusion, that might have some bering on the real outcome.

With that it appears some primers will have less S/ D over a few shots with certain powders, at a certain pressure in your particular hand load...But each primer cup, each primer mixture, consistently, and weight varies, each anvil varies.
Then ya have case volume inconsistencies and neck tension inconsistencies, plus bullet inconsistencies, and powder burn inconsistencies.
Hopeless for exacting...but when it comes together and you aquire low S/D keep doing what your doing.

I never worry about primers just seat them.

I been running a odd ball little AR 15 cartridge called the 338 Spectre with a 16" barrel. It runs single S/Ds with almost every bullet 160 gr to 350 gr. Super or subsonic ...completely loaded on a Dillion progressive.
Depending on case LP primer or SR primer, different brands with no difference still single digit S/D. Kind of incredible but its high load density and 100 % burnt according to QL with a moderate Lee factory crimp die.
Notice the 350 gr is machined on my lathes to make it a bore ride, another variable.

All these different primers SR & LP and 4 different cases but not mixed with every bullet from 160 gr to 350 gr subs all single digit S/Ds fired in an AR 15 auto loader, sub or super, and accurate with them all.
Unusual...maybe, but all these variables seem to make little difference in this cartridge.
So I'm not gonna worry about primers, unless I notice a difference...just seat em and go.
But if all that measuring and weighing works for anyone keep on doing it.

But maybe it's cartridge volume balanced to bore ratio, to powder volume, to % burnt, rather than primer that makes the difference.
My 6 Dasher is like that too...just seat the primer, no other concern needed.
Click to expand...
All these things with variability you mention are all true. And because of that is why I tend to be so skeptical about claims that I haven't seen any testing done. But when several good independent tests are run and the outcomes are the same, I'll then accept the theory. . . especially when my own tests end up with confirmation.

Aside from that, I'm just someone who likes to understand the details that are going on, as I've got an insatiable curiosity about things. And I understand that not everyone shares this mind set, and that's OK by me.

And I think you're right where if you don't find any difference for something for your cartridge or your cartridge simply meets your standards, there's really no point in pursuing it. :giggle:
 
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#2,616
straightshooter1 said:
All these things with variability you mention are all true. And because of that is why I tend to be so skeptical about claims that I haven't seen any testing done. But when several good independent tests are run and the outcomes are the same, I'll then accept the theory. . . especially when my own tests end up with confirmation.

Aside from that, I'm just someone who likes to understand the details that are going on, as I've got an insatiable curiosity about things. And I understand that not everyone shares this mind set, and that's OK by me.

And I think you're right where if you don't find any difference for something for your cartridge or your cartridge simply meets your standards, there's really no point in pursuing it. :giggle:
Click to expand...
The reality is really much more complicated.
Mathematically It would take AI computing to input all the variables, many not mentioned.

Then each variable would have to have a controlled statical analysis to see how much each variable contributed to the outcome of what the actual scientific and mathematical predictions equate to actual velocity measurements.
But one variable may cancel out another...then there is velocity measurements.
Chronographs are not accurate enough to do this job, another variable.

Is it the chronograph or the tested variable?

And bullet to bullet variations would affect the outcome even if the same case could be theoretically used over and over a million times, which could be done in AI modeling theory.
Then one could concentrate on the variables that most effect the desired outcome of low velocity variations.
But it still would not be accurate but have some predictability... like predicting the weather, or where a hurricane will hit land.
That is the reality...
What we do in reloading would not pass any scientific review.
It's more of an observation that may or may not have any actual validity, depending on constant changing variables, measured with less than exacting chronographs.

It is, what it is...and you do you, especially if you enjoy doing it, and/or it gives confidence. Confidence is a major part of the shooting sports game...no matter how ya get there.
 
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#2,617
XP1K said:
Since you're here, how many firings on your sig hybrid cases now ? I'm up to 4 on mine. I've shot up to 47gr of varget in them but settled at 45 for my current load. Which isn't too crazy. I know you lean on yours pretty good. I'm curious how many firings they're capable of before that steel head decides it's ready to check out.
Click to expand...
I have 5 reloading on some cases in 308 pushed hard, 6.5 CM 4 times with high pressure loads, and a bunch in 8.6 Blkout have been loaded quite a few times, but I actually haven't been keeping track of that caliber, and running about 65,000 psi in supers so the data could help out 8.6 owners with 6.5 twist barrels achieve high velocity in Alpha brass cases achieve maximum velocities for their barrel length.

I'm working on subsonic cartridges at this time, 338 Spectre, 8.6 Blkout, and 510 Whisper.
 
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#2,618
42.5gr of N540, lapua brass, cci br2. 168 smk @ 2.8"
#7 was me. Called right as soon as it broke.
20250222_204239.jpg


Coincidently, 42.5 was also the best load in my 16" chrome lined LMT. I used once fired fgmm brass and a cci 250 for the LMT though.
20250222_211036.jpg
 
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#2,620
Hey guys. I have an Sig Cross and waiting for a new comp profile 308 barrel from Straight Jacket Armory. I am building a steady hunting rifle. I say that because length plays into the equation but weight does not. So the barrel will be 18” long. I have a young son who shot that rifle last deer season in Federal 6.5 creed amd he did well with it. I was wondering, how slow can I safely shoot 308 ammo. I know he won’t shoot over 250 yards and would like to find something lower recoil for him. Looking at MV only, 2,300fps works all the way out to 400 yards.
 
#2,624
110 varmegeddons out of a 300blk around 2400 kill quite well. I also like the sierra 110 hollow points. We shoot a lot of pigs with those combos. Mostly the varmegeddons.

A buddy of mine has killed quite a few big south Texas whitetail with the varmegeddon 300blk combo out to 150 yards. He's braver than I am.

Same guy got the bright idea to hump up the 110 vmax out of his 18" 308. They were doing 3200. He shot a doe facing him straight on through chest at about 80 yards. It just splashed and made a 6" hole 3" deep on the surface. She ran at least 100 yards and I think he had to shoot her again.

Load them in the 308 around 2500 and roll with it.
 
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#2,625
beetroot said:
Does the 125gr TMK go any good in 308? You hear a lot about them in a 300blk but not in 308.

A fast 125gr seems like a nice option for a short barrel hunting 308.
Click to expand...
I shoot them out of an AR10 (20 in. 1-11 tw) for their low recoil and somewhat decent groups for an AR10. ARcomp has proven to be the best with 2995 fps.. Load generated from Quickload.
 
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#2,626
XP1K said:
110 varmegeddons out of a 300blk around 2400 kill quite well. I also like the sierra 110 hollow points. We shoot a lot of pigs with those combos. Mostly the varmegeddons.

A buddy of mine has killed quite a few big south Texas whitetail with the varmegeddon 300blk combo out to 150 yards. He's braver than I am.

Same guy got the bright idea to hump up the 110 vmax out of his 18" 308. They were doing 3200. He shot a doe facing him straight on through chest at about 80 yards. It just splashed and made a 6" hole 3" deep on the surface. She ran at least 100 yards and I think he had to shoot her again.

Load them in the 308 around 2500 and roll with it.
Click to expand...
I shot a coyote once at about 75 yards with a 125 going 3900ish fps once and the coyote ran off with the same damage as that doe. Bullet exploded upon impact. Figured right then that the 7.82 Warbird was best served with solids. This was about 20 years ago before I understood external ballistics.
 
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#2,627
Guns&WhiteWater said:
I shot a coyote once at about 75 yards with a 125 going 3900ish fps once and the coyote ran off with the same damage as that doe. Bullet exploded upon impact. Figured right then that the 7.82 Warbird was best served with solids. This was about 20 years ago before I understood external ballistics.
Click to expand...
You sure you got those numbers right? 3900fps for a 125gr .308 sounds…..really hot.
 
#2,629
Mean_Man said:
You sure you got those numbers right? 3900fps for a 125gr .308 sounds…..really hot.
Click to expand...
I used to have an old speer loading manual that had a load for a 110gr flat base hollow point at 4062 fps out of a 300winmag. I believe it was loaded with IMR 4831. I loaded some once and they actually shot good but I never shot anything with them.
 
#2,634
308 win 110 Barnes 3800 fps, the varmageddon might not make it in the 8 twist, and long barrel, maximum effort with hybrid cases.
Most Varmageddon were run in the 300 Hamr at 2800 fps, with a 15 twist, AR 15.
 

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#2,637
joe777 said:
I just bought one box of Federal GM308M2 175 SMK for testing and noticed on the back it states a 0.462 G1 BC. Can someone confirm that this a typo?
Click to expand...
That's a bit low from all that I've seen on the 175 SMK's. Sierra website state a G1 BC of .505 for the 175 SMK's and the default for what's in QuickLoad is also showing .505 for that bullet. The 168 SMK's are shown as a .462 G1 BC.
 
#2,641
XP1K said:
Yes. I hit them with an expander mandrel first, then cram them in a 308 die, and presto! 308 hybrid cases.

They'd probably make good 7-08's too. Or anything 308 based really.
Click to expand...
FWell that got my brain churning. The 308 woukd work ok for me. Wanting to push a 168 2750-2800 out of a 16". Maybe the 162 eld 2750-2800 would be cool in a 16" 7mm 08.
 
#2,642
supercorndogs said:
FWell that got my brain churning. The 308 woukd work ok for me. Wanting to push a 168 2750-2800 out of a 16". Maybe the 162 eld 2750-2800 would be cool in a 16" 7mm 08.
Click to expand...
that's probably doable with the right powder. My cousin has my old 16" 308. It has a 1:8 lilja on it. I should borrow it and do some testing. My wife shoots a model seven 7-08 with an 18" barrel. I could try that also.
 
#2,643
The limiting factor for cartridges is usually the strength of the brass which is why the pressure limit is around 62KPSI. Blowing primers are usually considered to be a load that is too hot, but you wont blow up the rifle. The stress on the action is still on the right side of the fatigue limit.

Using these hybrid cases with the stainless case head, inexperienced reloaders can load to unsafe pressures where the rifle can go boom without even knowing it. I do not know anyone that knows how to stay away from the line of finite life of the S-N curve. I don't even know at what pressure the fatigue limit is on my rifes and I have been reloading for 30 odd years.

Maybe an actual engineer can enlighten us?
 
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#2,644
supercorndogs said:
FWell that got my brain churning. The 308 woukd work ok for me. Wanting to push a 168 2750-2800 out of a 16". Maybe the 162 eld 2750-2800 would be cool in a 16" 7mm 08.
Click to expand...
That's not very realistic out of a!
JerkyFreak said:
The limiting factor for cartridges is usually the strength of the brass which is why the pressure limit is around 62KPSI. Blowing primers are usually considered to be a load that is too hot, but you wont blow up the rifle. The stress on the action is still on the right side of the fatigue limit.

Using these hybrid cases with the stainless case head, inexperienced reloaders can load to unsafe pressures where the rifle can go boom without even knowing it. I do not know anyone that knows how to stay away from the line of finite life of the S-N curve. I don't even know at what pressure the fatigue limit is on my rifes and I have been reloading for 30 odd years.

Maybe an actual engineer can enlighten us?
Click to expand...
I've got some hybrid cases delivered that I plan to play with. . . but I'm sure not going to see where the fatigue limit is on my firearm. 😵‍💫 I was reading an article about some of the testing the military was doing where they expected the pressure limit to be at 80k psi for the 277 Furry cartridge. But they actually tested them to failure at over 100k psi. It was pretty crazy numbers. And, like you mentioned, when I was reading this article, I was thinking about how foolish some people can be, especially those with limited knowledge and or experience. I don't plan to get anywhere near the 80k psi limit, but maybe approach 70k as I pressure test ladder to get a little feel for them in my .308 firearm. :giggle:

americanreloading.com

277 Fury / 6.8x51mm SIG Primed "Hybrid" Case - 100ct

ALL CASES CONTAIN STUCK POWDER Pulled, Primed Brass - Casings may contain minor dents/scratches *All casing should be resized prior to loading
americanreloading.com americanreloading.com
 
#2,645
308 Win with 22" 9 twist Bartlein 5 R, Rem 700 action.
177 SMK average velocity 3045 fps .545 BC ...hybrid cases... long barrel 3126 fps same load.
Or 230 Atips 2601 fps ave and 2708 fps with the longer barrel.
And 308s are easy to convert from 6.8x51 hybrid cases.
 

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#2,646
JerkyFreak said:
The limiting factor for cartridges is usually the strength of the brass which is why the pressure limit is around 62KPSI. Blowing primers are usually considered to be a load that is too hot, but you wont blow up the rifle. The stress on the action is still on the right side of the fatigue limit.

Using these hybrid cases with the stainless case head, inexperienced reloaders can load to unsafe pressures where the rifle can go boom without even knowing it. I do not know anyone that knows how to stay away from the line of finite life of the S-N curve. I don't even know at what pressure the fatigue limit is on my rifes and I have been reloading for 30 odd years.

Maybe an actual engineer can enlighten us?
Click to expand...


Do not attempt…. But I thought it applicable in the extreme case type of thing just for discussion.
 
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#2,648
918v said:
Soon we will have a pinned catastrophic failure thread, complete with stitches!
Click to expand...

Yup. Hopefully only stitches. If you want 300WM performance then get a 300WM. Pushing the 308 to those pressures is asinine in my opinion. Also plan on 300WM barrel life.
 
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