ASSRA Forum - Barrel twist on a 50-90 Remington Rolling Block.

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Barrel twist on a 50-90 Remington Rolling Block. (Read 44 times)

YippyKiYay Junior Member Offline Posts: 71 Location: Wichita Falls Texas Joined: Apr 4^th, 2026	Barrel twist on a 50-90 Remington Rolling Block. Yesterday at 7:53pm	Print Post
	I have the No5 action with a 54 caliber Green Mountain barrel. I'm going to send it off to be lined and chambered for 50-90. I have no desire to shoot this monster in competition, I plan on hunting/plinking with it. I have 2 molds; a 450gr and 500gr. and see no need for heavier competition boolits. That being said, what twist should I want in the liner? I'm having the barrel cut to 28", Beach front and rear sights. Thoughts please?

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TomKlinger Senior Forum Member Offline Posts: 273 Location: Central Florida Joined: Feb 17^th, 2019	Re: Barrel twist on a 50-90 Remington Rolling Block. Reply #1 - yesterday at 8:33pm	Print Post
	1in28 or 1in30…… Tom Klinger


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Schuetzendave Frequent Elocutionist Offline Retired Ex-Shooter Posts: 4241 Location: St. Albert, Alberta Joined: Jan 28^th, 2005	Re: Barrel twist on a 50-90 Remington Rolling Block. Reply #2 - yesterday at 11:25pm	Print Post
	Caliber 0.512 Inches Bullet Weight 450 Grains Bullet Length 0.8066 Inches Barrel Twist 28 Inches/turn muzzle velocity 1200 fps Temperature 50 degrees Fahrenheit (59 is standard) Pressure 29.92 inches of mercury (29.92 is standard) Sg = 4.54 Caliber 0.512 Inches Bullet Weight 450 Grains Bullet Length 0.8066 Inches Barrel Twist 30 Inches/turn muzzle velocity 1200 fps Temperature 50 degrees Fahrenheit (59 is standard) Pressure 29.92 inches of mercury (29.92 is standard) Sg = 3.96 Caliber 0.512 Inches Bullet Weight 450 Grains Bullet Length 0.8066 Inches Barrel Twist 40 Inches/turn muzzle velocity 1200 fps Temperature 50 degrees Fahrenheit (59 is standard) Pressure 29.92 inches of mercury (29.92 is standard) Sg = 2.23 Sg shouldn't be less than 1.4. If Sg is greater than about 2.0, you may gain some accuracy by going to a slower twist barrel.


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Schuetzendave Frequent Elocutionist Offline Retired Ex-Shooter Posts: 4241 Location: St. Albert, Alberta Joined: Jan 28^th, 2005	Re: Barrel twist on a 50-90 Remington Rolling Block. Reply #3 - yesterday at 11:29pm	Print Post
	Caliber 0.512 Inches Bullet Weight 500 Grains Bullet Length 0.99 Inches Barrel Twist 28 Inches/turn muzzle velocity 1200 fps Temperature 50 degrees Fahrenheit (59 is standard) Pressure 29.92 inches of mercury (29.92 is standard) Sg = 3.02 Caliber 0.512 Inches Bullet Weight 500 Grains Bullet Length 0.99 Inches Barrel Twist 30 Inches/turn muzzle velocity 1200 fps Temperature 50 degrees Fahrenheit (59 is standard) Pressure 29.92 inches of mercury (29.92 is standard) Sg = 2.63 Caliber 0.512 Inches Bullet Weight 500 Grains Bullet Length 0.99 Inches Barrel Twist 40 Inches/turn muzzle velocity 1200 fps Temperature 50 degrees Fahrenheit (59 is standard) Pressure 29.92 inches of mercury (29.92 is standard) Sg = 1.48 Sg shouldn't be less than 1.4. If Sg is greater than about 2.0, you may gain some accuracy by going to a slower twist barrel.


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