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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
FYI-6.5 Sherman, 156 & Retumbo
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<blockquote data-quote="dok7mm" data-source="post: 1725118" data-attributes="member: 90080"><p>Finally got around to jumping the Retumbo charges in my 6.5 Sherman & 156 EOL in 26" 3B.</p><p></p><p>CBTO-2.894", COAL-3.586", .020"</p><p>jump changed from 10 to 20 thou</p><p>( not sure if this was smart). New </p><p>Retumbo lot # of 16 pounds. I also moved to 200 yd, 3 shot groups. I don't know if the groups were my fault, the conditions ( wind was 3-7 mph and from 9:00 to a 12 mph head wind) or my seating depth change. Take your pick! Temperature varied from 68* to 76* over session.</p><p></p><p>I'm now going to load up 5 shot groups from 63.2 up to 64 grains and try them at 400-600 yds and see what happens.</p><p></p><p>Also, I ran a one shot pressure test in my 6.5 SS with my new 10# of N-565. Loaded 58 to 62.5 grs with 156 EOL in my 24" Bart 2b. My only pressure sign was a slight smear @ 62.5 w/temp at 80* to 84*. 61,61.5 and 62 went in same hole @ 100.</p><p></p><p>6.5 Sherman & 156 pictures below. [ATTACH=full]152069[/ATTACH]</p><p>[ATTACH=full]152074[/ATTACH]</p></blockquote><p></p>
[QUOTE="dok7mm, post: 1725118, member: 90080"] Finally got around to jumping the Retumbo charges in my 6.5 Sherman & 156 EOL in 26" 3B. CBTO-2.894", COAL-3.586", .020" jump changed from 10 to 20 thou ( not sure if this was smart). New Retumbo lot # of 16 pounds. I also moved to 200 yd, 3 shot groups. I don't know if the groups were my fault, the conditions ( wind was 3-7 mph and from 9:00 to a 12 mph head wind) or my seating depth change. Take your pick! Temperature varied from 68* to 76* over session. I'm now going to load up 5 shot groups from 63.2 up to 64 grains and try them at 400-600 yds and see what happens. Also, I ran a one shot pressure test in my 6.5 SS with my new 10# of N-565. Loaded 58 to 62.5 grs with 156 EOL in my 24" Bart 2b. My only pressure sign was a slight smear @ 62.5 w/temp at 80* to 84*. 61,61.5 and 62 went in same hole @ 100. 6.5 Sherman & 156 pictures below. [ATTACH=full]152069[/ATTACH] [ATTACH=full]152074[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
FYI-6.5 Sherman, 156 & Retumbo
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