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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
190 Berger 30-378
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<blockquote data-quote="Lefty7mmstw" data-source="post: 998378" data-attributes="member: 48043"><p>I'd guess the big 30-378 roy has enough boiler room to use rl50. That'll put you a bit ahead of rl33 in performance at the same pressure at the cost of a few grains additional powder with better loading density.</p><p> I can hit 3000 fps easily with a 220-225 with either powder in my 26" bbl'd lhm700 300rum. Top loads in the rum are 95 rl33 and 102 rl50 with 220-225 grain bullets. From what I'm seeing in my reloading books top loads from the rum are just a few grains lower that start loads in the 30-378 with most powders. I would start at those top loads (for the 30rum) or a couple of grains up and work to pressure and vel..</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 998378, member: 48043"] I'd guess the big 30-378 roy has enough boiler room to use rl50. That'll put you a bit ahead of rl33 in performance at the same pressure at the cost of a few grains additional powder with better loading density. I can hit 3000 fps easily with a 220-225 with either powder in my 26" bbl'd lhm700 300rum. Top loads in the rum are 95 rl33 and 102 rl50 with 220-225 grain bullets. From what I'm seeing in my reloading books top loads from the rum are just a few grains lower that start loads in the 30-378 with most powders. I would start at those top loads (for the 30rum) or a couple of grains up and work to pressure and vel.. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
190 Berger 30-378
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