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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5x284 Norma-pleasently suprised
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<blockquote data-quote="Greyfox" data-source="post: 714696" data-attributes="member: 10291"><p>I think you need to check your chronograph. Your come up from 500 to 1000 yards is consistent with several 6,5-284 rifles that I have tested with the same 51 gr load of H4831sc load that ran velocities at 2700-2800 FPS. The come up for a velocity of 2960FPS at 1000 ft alt and 50 degrees would be approximately 18 MOA. Your come up of 21 MOA would put you in the 2700-2800 FPS range which is consistent with your load and barrel length. My Cooper 52 with a 26" barrel with 53 gr of H4831sc runs 2950 FPS and has a come up of 17.5 MOA. My Savage with the same load and 24" barrel ihas a come up of 18 MOA. All this assumes that your scope tracks true, and there is no radical difference in your lot of 4831sc. IMHO.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 714696, member: 10291"] I think you need to check your chronograph. Your come up from 500 to 1000 yards is consistent with several 6,5-284 rifles that I have tested with the same 51 gr load of H4831sc load that ran velocities at 2700-2800 FPS. The come up for a velocity of 2960FPS at 1000 ft alt and 50 degrees would be approximately 18 MOA. Your come up of 21 MOA would put you in the 2700-2800 FPS range which is consistent with your load and barrel length. My Cooper 52 with a 26" barrel with 53 gr of H4831sc runs 2950 FPS and has a come up of 17.5 MOA. My Savage with the same load and 24" barrel ihas a come up of 18 MOA. All this assumes that your scope tracks true, and there is no radical difference in your lot of 4831sc. IMHO. [/QUOTE]
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6.5x284 Norma-pleasently suprised
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