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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Increase in velocity with stored ammo question?
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<blockquote data-quote="Rflamm250" data-source="post: 1996196" data-attributes="member: 105493"><p>I have a 6.5 saum that I have been shooting a few years, 5 to 600 round count, 1/4 minute gun. Last November I loaded 100 rounds with proven load that I have recorded velocities at 3130 over 10 plus rounds. Put it away with a clean barrel. I got it out a couple weeks ago and noticed I was almost a full minute high at 800yrd, so I ran 5 down it with the mag speed. All 5 were between 3160 and 3170. Asked around a bit with neck tension increasing over time being the only answer I could wrap my head around. Wondering If anyone has a better explanation for the 30 to 40 fps increase. FYI all same Lots powder, primer, bullets etc.. Since the 5 I have ran 5 more with the same result. Still shoots 1/4 minute, just curious. H1000 powder and similar temperature.</p></blockquote><p></p>
[QUOTE="Rflamm250, post: 1996196, member: 105493"] I have a 6.5 saum that I have been shooting a few years, 5 to 600 round count, 1/4 minute gun. Last November I loaded 100 rounds with proven load that I have recorded velocities at 3130 over 10 plus rounds. Put it away with a clean barrel. I got it out a couple weeks ago and noticed I was almost a full minute high at 800yrd, so I ran 5 down it with the mag speed. All 5 were between 3160 and 3170. Asked around a bit with neck tension increasing over time being the only answer I could wrap my head around. Wondering If anyone has a better explanation for the 30 to 40 fps increase. FYI all same Lots powder, primer, bullets etc.. Since the 5 I have ran 5 more with the same result. Still shoots 1/4 minute, just curious. H1000 powder and similar temperature. [/QUOTE]
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Increase in velocity with stored ammo question?
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