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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Badlands Precision Bullets thread - From BC to terminal ballistics
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<blockquote data-quote="codyadams" data-source="post: 2201070" data-attributes="member: 87243"><p>Did a seating depth test with the .338 250 SBDII, shot it at 250 yards. Just used 91 grains Retumbo, as that is a moderate to modest load, shouldn't have any serious pressure concerns. </p><p></p><p>They hated being close to the lands, grouped over 2.5 MOA at .010" off, .030" off was a little better but still almost 1.5 MOA, then at .050" off it started coming together with a .62 MOA group, and from there out stayed under 1 MOA. .070" was .93 MOA, .090" was .86 moa, and .110 was .77 moa. The velocity was around 2875 at .010" off, then dropped to about 2865 average at .030" off, then really leveled out from .050"-.090" off, averaging right around 2842 fps, with an e.s. of 22 fps, 8 of the 9 being within 14 fps of each other. I think .090" is a tipping point because of the one at 2827, then at .110" off velocity dropped again to around 2830 average. </p><p></p><p>So I'm going to go with .050" off for now, and do a ladder test. Got them loaded up and ready to go!! </p><p>[ATTACH=full]275160[/ATTACH]</p></blockquote><p></p>
[QUOTE="codyadams, post: 2201070, member: 87243"] Did a seating depth test with the .338 250 SBDII, shot it at 250 yards. Just used 91 grains Retumbo, as that is a moderate to modest load, shouldn't have any serious pressure concerns. They hated being close to the lands, grouped over 2.5 MOA at .010" off, .030" off was a little better but still almost 1.5 MOA, then at .050" off it started coming together with a .62 MOA group, and from there out stayed under 1 MOA. .070" was .93 MOA, .090" was .86 moa, and .110 was .77 moa. The velocity was around 2875 at .010" off, then dropped to about 2865 average at .030" off, then really leveled out from .050"-.090" off, averaging right around 2842 fps, with an e.s. of 22 fps, 8 of the 9 being within 14 fps of each other. I think .090" is a tipping point because of the one at 2827, then at .110" off velocity dropped again to around 2830 average. So I'm going to go with .050" off for now, and do a ladder test. Got them loaded up and ready to go!! [ATTACH=full]275160[/ATTACH] [/QUOTE]
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Badlands Precision Bullets thread - From BC to terminal ballistics
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