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pressure signs at 1 grain over books starting load

 
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  #22  
Old 09-15-2013, 10:32 PM
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Re: pressure signs at 1 grain over books starting load

Quote:
Originally Posted by shawn338lapua View Post
ok so let me say i am very new to reloading. I am shooting a savage 111 LRH in the 338 lapua. i started putting some loads together and the book (Modern Reloading, 2nd addition richard lee) says to start at 83 grains. i am using H1000, Lapua brass and lapua scenar 300 gr and cci MLR primers #250. i shot a 3 round group with 84 grains. 1 of the primers flattened and all three show slight ejector circles. is this normal? should i try my load ladder below what the book recommends since i am getting pressure signs early? Also i tried FL resizing some brass that where making my bolt stick(also showed signs of OP), no improvement, any suggestions? i am using a RCBS FL die. am i going to have to shell out for a more expensive die? anyways any help would be great. thanks
There seems to be an affliction with 300 grain bullets. Your rifle really can't stabilize a 300 grain pill in the first place. Drop to 250's with lapua or Nosler brass. I'm loading 94.5 grains of H1000 with 250's in Lapua, PPI and Nosler with no issues.

The Sierra book on 250 SMK has a maximum load of 100.2/H100 BTW.

Hornady makes good brass, so long as it's not a 338 Caliber brass..........
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  #23  
Old 09-16-2013, 04:58 PM
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Join Date: Jul 2013
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Re: pressure signs at 1 grain over books starting load

what kind of velocity are you getting with that load? ( 94.5 grains of H1000 with 250's)
excuse my ignorance but why cant my rifle stabilize the 300 gr? others seem to have found great success with the 300's.
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  #24  
Old 09-16-2013, 07:59 PM
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Re: pressure signs at 1 grain over books starting load

One, the rate of twist isn't sufficient for a 300 grain pill and two, my loads chrono at around 2800 FPS with the 2650 SMK loaded 20 off the lands in Lapua Brass (sometimes PPU) and everyone is crimped with a Lee 338 Collet crimper.

If I load at COAL (3.68 SMK or 3.575 SGK), the FPS don't change appreciably.

I say around because I use my buddy's chrono and it's an old one. Never been a professor of speed. Speed kills, kills rifling.....

Maximum recommended load with a H1000 for the 250 SMK/SGK is 100.1 grains btw.

My feeling is you'll do better with a 250 versus a 300 but it's your dime and rifle, not mine.

The 338 Lapua Magnum is a very touchy caliber to load for as many will attest to on this site (and others).

I found my sweet spot, but it may not be yours.

I'm more concerned with what the pill hits, not how fast it gets there.

There is nothing that a 338 Caliber won't decimate in North America at even the starting loads, so why push it.

You obviously have some issues, what exactly they are, I have no idea because I'm not there. I'd start with good brass and review your loading practices. Something isn't right in your procedures, what that is, I have no idea.
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  #25  
Old 09-17-2013, 12:44 AM
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Re: pressure signs at 1 grain over books starting load

now i am getting off subject but what twist rate is recommended for 300?
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  #26  
Old 09-17-2013, 01:14 AM
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Re: pressure signs at 1 grain over books starting load

Both Sierra and Berger make a 300 grain pill in .338 caliber. According to their websites, both recommend a minimum 1 in 10 twist. Your savage has a 1 in 9 twist. Your barrel should be able to stabilize the 300 gr. pills with no problem. (see PM).
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