How fast are you pushing the 208 A-Max? (300WM)

[Wheres-Waldo]

Im starting to work on some loads for my 300WM using the 208 gr. A-Max and H1000.

The closest I can come to 208 in my on hand reloading data is 200, or 220, and I have been advised to just split the difference. In my Lyman 48th 200 gr HPBT max charge of H1000 is 80 gr. and a 220 RN maxes out at 78 gr. H1000. Should 79 gr. be my stopping point?

I also found some Berger 210 VLD data on AR15.com that actualy came from here, in which Berger stated the 210 VLD with H1000 had a charge range from 72.5 to 76.2 gr. 76.2 giving 100% load density, with a max velocity of 2836, found HERE (Down by the bottom by StrategicEdge). I personaly loaded some up to 78 gr. and was only at about 75% fill.

How fast are you pushing the 208? And if with H1000, at what point did you start seeing pressure signs?

 

[Rob01]

Re: How fast are you pushing the 208 A-Max? (300WM)

I was getting about 2950fps out of 77grns of H1000 in Winchester cases with both the 208 and 210. That is out of a 26" 10 twist Kreiger barrel. No pressure signs and the velocity I wanted so I didn't go any higher. That Berger 210 data is a good range to start with either bullet and work up.

 

[NOMAD]

Re: How fast are you pushing the 208 A-Max? (300WM)

Yeah explain the haor loss then!!!

 

[dj70]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Wheres-Waldo</div><div class="ubbcode-body">Im starting to work on some loads for my 300WM using the 208 gr. A-Max and H1000.

The closest I can come to 208 in my on hand reloading data is 200, or 220, and I have been advised to just split the difference. In my Lyman 48th 200 gr HPBT max charge of H1000 is 80 gr. and a 220 RN maxes out at 78 gr. H1000. Should 79 gr. be my stopping point?

I also found some Berger 210 VLD data on AR15.com that actualy came from here, in which Berger stated the 210 VLD with H1000 had a charge range from 72.5 to 76.2 gr. 76.2 giving 100% load density, with a max velocity of 2836, found HERE (Down by the bottom by StrategicEdge). I personaly loaded some up to 78 gr. and was only at about 75% fill.

How fast are you pushing the 208? And if with H1000, at what point did you start seeing pressure signs? </div></div>

Marine, what rifle are you shooting? I'm loading for my 300 P, 208 A Max and starting at 74.6 gr working up .3 gr at a time. Starting OAL is 3.5 or 88.9 mm, Rem cases, CCI 250 primers & H1000. My chamber bolt face to lands are 92.4 mm (3.638"). I would suggest since every rifle is different, load for your rifle and pay close attention to any small signs of pressure.
I'll probably load up to 77 gr while moving the bullet out .05" at about 76 gr. Once I see some results then I'll go higher.

 

[desertHK]

Re: How fast are you pushing the 208 A-Max? (300WM)

75.5 grains of RL25 at 2850 fps. 3.600" COAL

 

[doc76251]

Re: How fast are you pushing the 208 A-Max? (300WM)

Hell I drive them with 60.0gr of RE-22 out of a 30-06 at 2800fps.

Sorry had to poke the magnum guys

Cheers,

Doc

 

[h2osport]

Re: How fast are you pushing the 208 A-Max? (300WM)

I am loading the 210 berger vlds with 80.1gr of H1000 at 2980fps. This is a compressed charge, and is pretty consistent. I am not experiencing any pressure issues in my Armalite AR-30.

I know this is not A-max bullet, but thought it might help.

 

[Wheres-Waldo]

Re: How fast are you pushing the 208 A-Max? (300WM)

I've been messing around with H1000 and the 208's for a few weekends now, with mixed results. I'm contemplating starting all over with my work-ups and move the bullets into the lands a tad, maybe .001" so I can rest easier about run-out playing a role.

I've been discusing my techniques with a veteran of reloading out at the range I shoot at that has given me some pointers on working up my loads, so I think I'll just start over, using alot of his advice this time around.

Oh, the rifle is a 700 action, trued.
26" Lothar Walther barrel 1-10" w/ brake.
Factory chamber. I plan to have it set back and rechambered w/ a tighter neck eventualy.
Shilen trigger
AICS 1.5
NF NXS 5.5-22 MLR

 

[woodspider]

Re: How fast are you pushing the 208 A-Max? (300WM)

76.9 Grains H1000
.208 AMAX
Hrndy Brass
Fed Mag/Match primers
3.610 OAL jammed

2970 to 3000 average FPS
shoots the lights out everyday and twice on sundays!

 

[ranger1183]

Re: How fast are you pushing the 208 A-Max? (300WM)

80.0 grains of H-1000
Winchester Brass
CCI-250 large rifle magnum primers
3.600" COAL
2940 fps
Range altitude = 3300 feet above sea level
Remington 700 26" factory barrel with factory chamber. This might be why I'm not getting a higher velocity out of this load.

 

[jerseymike]

Re: How fast are you pushing the 208 A-Max? (300WM)

2950 with 72.5 gr of re22 from a 26" with sf brake. No pressure

 

[00bullitt]

Re: How fast are you pushing the 208 A-Max? (300WM)

3150fps with 70gr. of RL17 in Winchester Brass. Pressure starts to show at 70.5gr, best accuracy comes at 68.5gr. for 3060fps

2840fps in the 30-06 with 56.5gr. of RL17

 

[lrrifle]

Re: How fast are you pushing the 208 A-Max? (300WM)

JerseyMike,
What kind of accuracy are you getting with that load. Barrel twist? Still trying to find the sweet spot on my Sendaro.
Thanks.

 

[ranger1183]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 00bullitt</div><div class="ubbcode-body">3150fps with 70gr. of RL17 in Winchester Brass. Pressure starts to show at 70.5gr, best accuracy comes at 68.5gr. for 3060fps</div></div>
Those numbers are amazingly fast! Over 200 fps faster than what I'm getting with 80 grains of H-1000, and that's a pretty stout load.

 

[targaflorio]

Re: How fast are you pushing the 208 A-Max? (300WM)

30" barrel?

 

[rusty815]

Re: How fast are you pushing the 208 A-Max? (300WM)

I'm getting 2970fps out of a 300WSM under 67.4gr. or RL-19, could probably push it past 3k but would like to keep from getting pressure signs at higher temps.

 

[00bullitt]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ranger1183</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 00bullitt</div><div class="ubbcode-body">3150fps with 70gr. of RL17 in Winchester Brass. Pressure starts to show at 70.5gr, best accuracy comes at 68.5gr. for 3060fps</div></div>
Those numbers are amazingly fast! Over 200 fps faster than what I'm getting with 80 grains of H-1000, and that's a pretty stout load. </div></div>

Yep.....they are moving. Ive been using this load for some time. It is a load I developed as there was no data available. I am very pleased with the results out of my 25" Mk13 Mod6. It has been trued downrange and chronographed.

 

[Beepy]

Re: How fast are you pushing the 208 A-Max? (300WM)

Geez!!! So I have done some experimenting with RL17 and 208Amax in 308 Win, but just yesterday I loaded some 208's in 300 win with H1000 to do some ladder testing. If you broke 3k with less overall powder charge with RL17 I might have to try some of that.

Especially since around here it seems that R17 just sits on the shelves....

 

[Beepy]

Re: How fast are you pushing the 208 A-Max? (300WM)

How many grains of RL17 did you start with when you were working up? What is the OAL? THANKS!

 

[00bullitt]

Re: How fast are you pushing the 208 A-Max? (300WM)

We started at 65gr. and worked up in .5gr. increments.

The first few shots we pulled the trigger with a string until we knew it was safe. We loaded up to 71 grains. 71 grains flattened the primer and required leveraging the bolt handle to get it open. 70.5 were the first signs of ejector swipe but no sticky bolt.

The above was done in Winchester brass. FC Brass shows pressure earlier at 69.5.

68.5 is what I settled on for accuracy using FC brass.
Saw SD down below 5.

RL17 has become one of my go to powders and provides great results across many calibers. Much, much more temp stable than the other Reloader Powders. It is also made by a different company - Nitrochemie

 

[Aimsmall55]

Re: How fast are you pushing the 208 A-Max? (300WM)

2920 with 72.9 r22 3.600" out of a 700 police

 

[ranger1183]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 00bullitt</div><div class="ubbcode-body">We started at 65gr. and worked up in .5gr. increments.

The first few shots we pulled the trigger with a string until we knew it was safe. We loaded up to 71 grains. 71 grains flattened the primer and required leveraging the bolt handle to get it open. 70.5 were the first signs of ejector swipe but no sticky bolt.

The above was done in Winchester brass. FC Brass shows pressure earlier at 69.5.

68.5 is what I settled on for accuracy using FC brass.
Saw SD down below 5.

RL17 has become one of my go to powders and provides great results across many calibers. Much, much more temp stable than the other Reloader Powders. It is also made by a different company - Nitrochemie </div></div>

I had to try this out so I loaded Winchester brand 300 WM brass with 208 A-Max and loads beginning at 65.0 grains of Reloader 17 and stopping at 70 grains. This was done with a (very roomy) factory chamber so be careful if you try to duplicate this. Barrel length is 26".

The range is at 3332 feet above sea level, conditions were 63°F @ 45% Humidity.

65.0 grains = 2795 FPS
65.5 grains = 2848 FPS
66.0 grains = 2849 FPS
66.5 grains = 2895 FPS
67.0 grains = 2903 FPS
67.5 grains = 2933 FPS
68.0 grains = 2936 FPS
68.5 grains = 2981 FPS
69.0 grains = 2982 FPS
69.5 grains = 2961 FPS <- Huh, what? Bad brass? Not sure why the velocity suddenly dropped.
70.0 grains = 2983 FPS

Even at 70.0 grains there aren't any significant signs of pressure. This convinced me that for this particular barrel I need to do a second load ladder going at least one grain above my previous maximum load.

The Ladder was shot at 300 yards. Overall there were horrible <span style="font-weight: bold"><span style="font-style: italic">horizontal</span></span> spreads due to gusting winds and because of tha nut behind the rifle. Vertical grouping, however showed a huge amount of promise.

 

[WKR]

Re: How fast are you pushing the 208 A-Max? (300WM)

Very good info thanks everyone I just started reloading for my AR-30 300 wm but I am way below this velocities you guys are getting.

 

[Jeepocabra]

Re: How fast are you pushing the 208 A-Max? (300WM)

My 300wsm on a la with a 28" Kreiger is about 3120 with reloader 17. It's in the limit of pressure at area but is very accurate. Reloader 17 seems to be the speed king for allot of guns.

 

[gamhuntr]

Re: How fast are you pushing the 208 A-Max? (300WM)

I shoot the 208Amax with 76.5gr of H1000 and get 2900 out of my rem 700 5r 300wm.

 

[rusty815]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jeepocabra</div><div class="ubbcode-body">My 300wsm on a la with a 28" Kreiger is about 3120 with reloader 17. It's in the limit of pressure at area but is very accurate. Reloader 17 seems to be the speed king for allot of guns. </div></div>

What's your load? I couldn't get above 3k fps in my 24" barrel using reloader 17, using reloader 19 I could, but I keep it just under 3k to keep it safe.

 

[targaflorio]

Re: How fast are you pushing the 208 A-Max? (300WM)

I worked up a load of 208s with Win brass and cci 250 primers. I got good grouping at 72 grs of rl22. Did not get pressure signs at my max attempted load of 72.4. I just bought a Magnetospeed, so I will look for mv this weekend. 26" Schneider 1:9.5 barrel.
Anybody shoot Berger 215 or 230 hybrids? I'm getting 2800 at 75.5 grs H1000 and 2690 at 73 grs on the 230s.

 

[ranger1183]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: rusty815</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jeepocabra</div><div class="ubbcode-body">My 300wsm on a la with a 28" Kreiger is about 3120 with reloader 17. It's in the limit of pressure at area but is very accurate. Reloader 17 seems to be the speed king for allot of guns. </div></div>

What's your load? I couldn't get above 3k fps in my 24" barrel using reloader 17, using reloader 19 I could, but I keep it just under 3k to keep it safe. </div></div>
I don't think that Jeepocabra load is of much use in this discussion. He's shooting a <span style="font-weight: bold"><span style="font-style: italic">WSM</span></span> instead of the 300 Win Mag that this thread is all about.

 

[targaflorio]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ranger1183</div><div class="ubbcode-body">

68.5 grains = 2981 FPS
69.0 grains = 2982 FPS
69.5 grains = 2961 FPS <- Huh, what? Bad brass? Not sure why the velocity suddenly dropped.
70.0 grains = 2983 FPS

Even at 70.0 grains there aren't any significant signs of pressure. This convinced me that for this particular barrel I need to do a second load ladder going at least one grain above my previous maximum load.
</div></div>
Ranger: did you just measure mv on one shot per powder charge? Mv often goes down as you bump up against max pressure. You added 1.5 grs of relatively fast powder and didn't increase velocity but 2 fps. How fast do you think you can move that bullet? I would suggest you might already be at max. My $.02...

 

[ranger1183]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: targaflorio</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ranger1183</div><div class="ubbcode-body">

68.5 grains = 2981 FPS
69.0 grains = 2982 FPS
69.5 grains = 2961 FPS <- Huh, what? Bad brass? Not sure why the velocity suddenly dropped.
70.0 grains = 2983 FPS

Even at 70.0 grains there aren't any significant signs of pressure. This convinced me that for this particular barrel I need to do a second load ladder going at least one grain above my previous maximum load. </div></div>
Ranger: did you just measure mv on one shot per powder charge? Mv often goes down as you bump up against max pressure. You added 1.5 grs of relatively fast powder and didn't increase velocity but 2 fps. How fast do you think you can move that bullet? I would suggest you might already be at max. My $.02... </div></div>
Good point. I'll have to look into that. Either way, that's a hunting-"noodle" barrel with a factory chamber I did my initial testing on. Just to see if the RE-17 powder held any real promise in the 300WM. The MATCH barrel with MATCH chamber is where the results are really going to matter.

 

[targaflorio]

Re: How fast are you pushing the 208 A-Max? (300WM)

Roger that. Good luck! My problem is picking one bullet and sticking with it. I'm shooting Berger 230 hybrids at 2690 and 215s at 2800. We shall see how they do at 1200 yds this weekend.

 

[ranger1183]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: targaflorio</div><div class="ubbcode-body">Roger that. Good luck! My problem is picking one bullet and sticking with it. I'm shooting Berger 230 hybrids at 2690 and 215s at 2800. We shall see how they do at 1200 yds this weekend. </div></div>
I've heard nothing but great things about those new Berger Hybrids. Apparently, they are flying long range as good or better than any other 30 caliber out there. Just wish they were less expensive. Somewhere along the lines of $29 per 100 that I'm paying for the 208 A-Max would be great. Not going to happen, which is why I'll stick with the Hornady's.

 

[rusty815]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ranger1183</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: rusty815</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jeepocabra</div><div class="ubbcode-body">My 300wsm on a la with a 28" Kreiger is about 3120 with reloader 17. It's in the limit of pressure at area but is very accurate. Reloader 17 seems to be the speed king for allot of guns. </div></div>

What's your load? I couldn't get above 3k fps in my 24" barrel using reloader 17, using reloader 19 I could, but I keep it just under 3k to keep it safe. </div></div>
I don't think that Jeepocabra load is of much use in this discussion. He's shooting a <span style="font-weight: bold"><span style="font-style: italic">WSM</span></span> instead of the 300 Win Mag that this thread is all about. </div></div>

I shoot a 300WSM as well, which is why I'm so interested.

 

[ranger1183]

Re: How fast are you pushing the 208 A-Max? (300WM)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: rusty815</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ranger1183</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: rusty815</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jeepocabra</div><div class="ubbcode-body">My 300wsm on a la with a 28" Kreiger is about 3120 with reloader 17. It's in the limit of pressure at area but is very accurate. Reloader 17 seems to be the speed king for allot of guns. </div></div>

What's your load? I couldn't get above 3k fps in my 24" barrel using reloader 17, using reloader 19 I could, but I keep it just under 3k to keep it safe. </div></div>
I don't think that Jeepocabra load is of much use in this discussion. He's shooting a <span style="font-weight: bold"><span style="font-style: italic">WSM</span></span> instead of the 300 Win Mag that this thread is all about. </div></div>

I shoot a 300WSM as well, which is why I'm so interested. </div></div>
got it.

 

[csloop]

Re: How fast are you pushing the 208 A-Max? (300WM)

has anybody use IMR 4831 with this lead

 

[RedGoat]

Re: How fast are you pushing the 208 A-Max? (300WM)

Does anyone have any experience with this combo out of an 18" barrel have been considering getting the 18" DTA Covert barrel but haven't been able to find much data.

 

[Jig Stick]

Re: How fast are you pushing the 208 A-Max? (300WM)

my 26in Krieger 1:10 twist is launching the 208g Amax at 2870fps with 71g of R22

 

[REL1203]

Re: How fast are you pushing the 208 A-Max? (300WM)

26" XCR Rem Barrel 1:10 is sending the 208 with H1000 at 3.59" COAL
76.0 = 2855fps
76.8 = 2890fps
77.5 = 2940fps