SPF

PJV99 said:

A simple question.

Is barrel wear just a function of velocity or is it based on energy?

At the moment in my 308 I'm shooting 168 ELD match heads at around 2700 ft/s

It's a new barrel and I would like to minimise wear ( don't we all!) I'm looking to improve performance at 1000 yds.

So should I increase velocity or increase bullet weight to minimise barrel wear.

All input greatfully received


Peter

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As mentioned, HEAT is the big factor for barrel life. That heat is a factor of the powder you use. how much of it you use, rate of fire and ambient temperature you're shooting in affects how fast the heat will build up. This is the reason I have little temperature strips on my barrels just forward of the chamber to monitor the barrels temperature while I'm shooting and I stop shooting to cool off once they show 122°F. You can go hotter, but like you, I like to try and get as much use out of a barrel as possible (especially as prices are due to climb, given current economic environment).

There is a calculator that can help give you some idea how long your barrel life might be with your inputs: https://www.accurateshooter.com/technical-articles/excel-formula-predicts-useful-barrel-life/

Here's some numbers to give you some ideas:

If you're on FB, come join the DeLane Development Group, private group. The group is visible, but members have to get the nod.


MB

If you're on FB, come join the DeLane Development Group, private group. The group is visible, but members have to get the nod.


MB

Lawless said:

And stay out!

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When you can save your catalytic converter and pattern your turkey gun all at once!

Sirhr

26gr under a hornady 55gr SP shoots 1.5 moa or better in all my ARs

Snailz said:

Get GRT, do your own homework. If memory serves, a standard 308 throat will be close to touch somewhere around to 2.90 or ~2.236 base to ojive. Depends on reamer and throat wear. This bullet just wouldn’t shoot under 1 MOA in my gun. Eyeballing the bullet shapes, I’d say the 177 SMK is a better option if you want to run one of the newer high bc sierras as it’s a less exaggerated ojive that shouldn’t be quite such a PITA to find how much it wants to jump.

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The 177 SMK's performed nicely for me where I loaded them with 40.8 grs AR-Comp giving me ~2,650 fps with groups just under .5 MOA.

I still like the 169's the best.

Jefe's Dope said:

Black bear attacks are rare. I'm curious to see what they come up with.

Just moved to Florida from Colorado nine months ago. I had never seen a bear wildlife road sign until moving here.

View attachment 8684277

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123 exit off 85 going toward Fort Walton?

updated.

LeadBreakfast said:

Either someone has an axe to grind, is lying, or is repeating lies. I'd love to know the truth.

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Yup, keep digging !!!

Kickin45 said:

Lazarus time!
What are everyone’s loads?
Barrel, brass, powder, primer, fps?

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Gun: Ruger Precision Rifle Gen2
Barrel: 26" Krieger 10:1, contour: .900 muzzle
Brass: Lapua Palma
Powder: AR-Comp, 41.1 grs
Primer: CCI-400 or 450's in Alpha brass
MV: 2690 fps or 2704 fps with CCI-450 primers
COAL: 2.974

SD's running 5 to 6 fps
Group MOA's: .370 to .460

I ordered one yesterday from DNT for my B14r 22lr, with Vet Discount 607.27 delivered, no shipping yet.

yosemite_sam said:

When people are saying it’s “too slow” what do you mean by that? Too little energy, poor wind performance, too much drop? Attached are two dope charts for my rifle(16 inch barrel). One has velocity at 2610(fast stuff) and the other is at 2488(the average of the velocities of the four new lots posted above). I have my own thoughts about the data but want to hear what y'all think? View attachment 8684429View attachment 8684430

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I get what you're saying. 200ish feet per second doesn't make much of a difference down range, especially with the 77s. I'd even argue that the slower velocities can be better because wind has less of an effect on the projectile.

Still, faster is generally better, as long as it isn't at the expense of accuracy. My problem with the AAC stuff is that the accuracy has varied pretty drastically from lot to lot.

For me, at the .50 per round sale price, it's still too expensive when you add on tax and shipping. As of recently, I've gone to the Winchester contract overrun stuff, loaded with the 77gr Match Burners. At .70 or less per round, shipped, it's a better deal because it is consistent. It's slow, but the consistency of accuracy doesn't leave me scratching my head.

Unfortunately, I don't think I'll be able to get any more of that stuff.

Jefe's Dope said:

Black bear attacks are rare. I'm curious to see what they come up with.

Just moved to Florida from Colorado nine months ago. I had never seen a bear wildlife road sign until moving here.

View attachment 8684277

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That’s because CO isn’t full of NJ and NY dipshits that have zero clue about wildlife like FL is overrun with.

918v said:

You think that intentionally smashing into a motorcyclist because he was acting like an asshole is right? That act could have resulted in a pileup with multiple deaths and millions in property loss.

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If that’s the way you want to take it, do you think someone in a car should just accept when a motorcycle swerves at them, screams and gestures, then reaches for their saddle bag? Well, I choose my life over his, every time….

I really like my Vortex Defenders

theLBC said:

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no but if you are a deep state member you can try and assassinate them. sometimes you will be successful

Rather than start another thread I have a question which fits in here. If not @mods please delete my post. I have a Stiller Predator action when Stiller first started making them, it has the 338 Lapua bolt. Aside from limited stock selections, are there any problems using that action for a 300 Norma Improved? Thanks.

Lawless said:

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btt