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.338 Lapua help

 
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  #1  
Old 03-29-2009, 12:38 PM
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.338 Lapua help

I need to know if any of you have had any luck with IMR 7828ssc with a 250 gr sceener or 250 gr SMK. Tried H1000 with very poor results. I know h4831 sc would be better but I can not find any. The rile is a AI AW 338 w/26'' 1/10 twist.


Also has anybody tried a test to see if there is a difference between regular primers and match. I have thousands of regular mag primers but ever since the rifle came I cant find any M primers.

Thank you for any help.
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Old 03-29-2009, 12:43 PM
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Re: .338 Lapua help

What do you mean by very poor results?

7828 should work as would Retumbo, R-25 as well as other powders in this burn rate, even 4831, etc.

Judging from my experience only I'd say if H-1000 doesn't work with 250 or 300 SMKs I'd be looking at the barrel.
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Old 03-29-2009, 03:43 PM
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Re: .338 Lapua help

Every shot through a chronograph was 50fps greater as the barrel warmed. No doubt it would group well if you wanted to wait 10 minutes between shots. I stopped at 97.5 grains with about 3000fps.the groups had a vertical spread of 1'' at 100 but with factory ammo they are 1 hole. Ive seen a lot of people complaining of the same problem with h1000 and they all switch to 4831 but I can not find any.
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Old 03-29-2009, 04:51 PM
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Re: .338 Lapua help

Never experienced nor heard of that problem with H-1000 in fact it is probably the most used powder choice in the 338 Edge and Lapua. Not the fastest velocity choice but a very consistent powder with low SD & ES
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Old 04-03-2009, 10:44 AM
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Re: .338 Lapua help

I use 92.5gr H1000 under the 250gr bullet.

Retumbo, RL22, RL25, IMR4350 give good results out of my PGWDTI Timberwolf.

I forgot to add that N165 was too snappy and the barrel heated faster.
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Last edited by BHP9; 04-03-2009 at 10:47 AM.
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