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Rifles, Reloading, Optics, Equipment
Reloading
.338 Norma Magnum and IMR 7828ssc
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<blockquote data-quote="codyadams" data-source="post: 1818992" data-attributes="member: 87243"><p>Results were as follows:</p><p></p><p>300 Berger Elite Hunter, .020" off (3.680" OAL)</p><p>IMR 7828ssc</p><p>Peterson Brass</p><p>GM215M</p><p></p><p>80 - 2539</p><p>81 - 2578</p><p>82 - 2615</p><p>83 - 2662</p><p>84 - 2669</p><p>84.5 - 2714</p><p></p><p>Just started to see the first signs of pressure in the form of a light primer crater at 84 grains, and 84.5 had a significant jump in velocity, I only shot one of those, didn't bother with the group as it was too hot. No bolt lift, ejector mark or anything like that was present on any, but Peterson and Lapua brass in these large diameter cases hide pressure very well, and usually don't show signs until you are well over pressure, which I want to avoid as this is being ran on a Remington 700 action. </p><p></p><p>80 grains was around .75", same with 83 grains, and 84 was slightly larger. 81 and 82 showed poor accuracy, 1.5" or a little more. Not as good of results as H1000 as far as accuracy, but I still need to do a seating depth test to determine where it wants to be. Seems like there is accuracy around 2540 and again up at 2660-2670, I may explore that a little bit while finishing getting the barrel settled in, I have 49 rounds fired so far.</p></blockquote><p></p>
[QUOTE="codyadams, post: 1818992, member: 87243"] Results were as follows: 300 Berger Elite Hunter, .020" off (3.680" OAL) IMR 7828ssc Peterson Brass GM215M 80 - 2539 81 - 2578 82 - 2615 83 - 2662 84 - 2669 84.5 - 2714 Just started to see the first signs of pressure in the form of a light primer crater at 84 grains, and 84.5 had a significant jump in velocity, I only shot one of those, didn't bother with the group as it was too hot. No bolt lift, ejector mark or anything like that was present on any, but Peterson and Lapua brass in these large diameter cases hide pressure very well, and usually don't show signs until you are well over pressure, which I want to avoid as this is being ran on a Remington 700 action. 80 grains was around .75", same with 83 grains, and 84 was slightly larger. 81 and 82 showed poor accuracy, 1.5" or a little more. Not as good of results as H1000 as far as accuracy, but I still need to do a seating depth test to determine where it wants to be. Seems like there is accuracy around 2540 and again up at 2660-2670, I may explore that a little bit while finishing getting the barrel settled in, I have 49 rounds fired so far. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.338 Norma Magnum and IMR 7828ssc
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