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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Uncharted territory
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<blockquote data-quote="Lefty7mmstw" data-source="post: 938758" data-attributes="member: 48043"><p>I think this is one powder where you have to use the velocity as a speed limit/ pressure estimation too. Most 300 rum loads with other slow burners are topping between 2900 and 3000 fps with 220-230 grain pills and 26" bbls.. Any more than 100 fps more is a red flag IMO.</p><p>I saw this with the 7 stw in the old win factory loading too; 75Kpsi loads weren't tough on the brass at all. They should have been eating it up. </p><p>rl25 was new at the time ( deja vu I guess) and I was seeing some good speeds for the exhibited pressures so I asked my bro in law to strap up his pressure trace to my rifle to do some checking. Turns out rl25 was able to equal 7828 with around 6Kpsi less pressure, but there really wasn't that much more speed on the table before that one (rl25) hit the wall too.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 938758, member: 48043"] I think this is one powder where you have to use the velocity as a speed limit/ pressure estimation too. Most 300 rum loads with other slow burners are topping between 2900 and 3000 fps with 220-230 grain pills and 26" bbls.. Any more than 100 fps more is a red flag IMO. I saw this with the 7 stw in the old win factory loading too; 75Kpsi loads weren't tough on the brass at all. They should have been eating it up. rl25 was new at the time ( deja vu I guess) and I was seeing some good speeds for the exhibited pressures so I asked my bro in law to strap up his pressure trace to my rifle to do some checking. Turns out rl25 was able to equal 7828 with around 6Kpsi less pressure, but there really wasn't that much more speed on the table before that one (rl25) hit the wall too. [/QUOTE]
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