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Rifles, Reloading, Optics, Equipment
Reloading
If I am using 80 grs. of 7828, where should I start with Retumbo ?
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<blockquote data-quote="kraky2" data-source="post: 216973" data-attributes="member: 3532"><p>I've played with both 7828 and retumbo a bit in a wby factory riflle with freebore. It's my guess that all being the same you would wind up about 2.0-2.5 grains higher with retumbo. BUT being you are changing brass from wby to rem it's possible that your idea of starting at the same 80 grains is where you might wind up at max. Sooooo....I'd say the advise of starting down near 77-78 and working up is very sound.</p><p></p><p>BTW---retumbo shot really good with 200 ab's in my super fussy 300UL.....but 180 tsx's shot even better. Before retumbo rolled along I was about to rebarrel that gun. Now I have confidence in it. Also...retumbo has tested pretty good with temp swings for me but I haven't tried it in really hot weather....just 20 degrees to about 75 degrees.....no change in velocity.</p></blockquote><p></p>
[QUOTE="kraky2, post: 216973, member: 3532"] I've played with both 7828 and retumbo a bit in a wby factory riflle with freebore. It's my guess that all being the same you would wind up about 2.0-2.5 grains higher with retumbo. BUT being you are changing brass from wby to rem it's possible that your idea of starting at the same 80 grains is where you might wind up at max. Sooooo....I'd say the advise of starting down near 77-78 and working up is very sound. BTW---retumbo shot really good with 200 ab's in my super fussy 300UL.....but 180 tsx's shot even better. Before retumbo rolled along I was about to rebarrel that gun. Now I have confidence in it. Also...retumbo has tested pretty good with temp swings for me but I haven't tried it in really hot weather....just 20 degrees to about 75 degrees.....no change in velocity. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
If I am using 80 grs. of 7828, where should I start with Retumbo ?
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