40 2 1/2 bullet diameter
- Don McDowell
- Posts: 7647
- Joined: Thu Nov 29, 2007 2:04 pm
- Location: Ft. Laramie Wy
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Re: 40 2 1/2 bullet diameter
1 grain of 1 1/2 probably won't gain you much over 5 fps. But the important thing is whether or not the rifle likes that extra grain/grains of powder or not
AKA Donny Ray Rockslinger
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- Posts: 866
- Joined: Mon Jan 07, 2013 9:07 am
- Location: St. Albert, Alberta
Re: 40 2 1/2 bullet diameter
Caliber 0.408 Inches
Bullet Weight 410 Grains
Bullet Length 1.321 Inches
Barrel Twist 16 Inches/turn
muzzle velocity 1323 fps
Temperature 50 degrees Fahrenheit (59 is standard)
Pressure 29.92 inches of mercury (29.92 is standard)
Sg = 2.42
Drop in velocity did not change the Sg much.
Bullet Weight 410 Grains
Bullet Length 1.321 Inches
Barrel Twist 16 Inches/turn
muzzle velocity 1323 fps
Temperature 50 degrees Fahrenheit (59 is standard)
Pressure 29.92 inches of mercury (29.92 is standard)
Sg = 2.42
Drop in velocity did not change the Sg much.