OK some might not believe this but I will add these figures(chony'd) for those who have an open mind.
Rifle was a 270Roy, Mark V U/L.
My friend is a loyal Roy freak. He has had em all, tested em all & loves em all!!! From custom Crowns, Alaskans to early west Germans.
"I started at 77gr re25 and worked up to 86.5gr with the 130pill and velocity ranged from 3404 to 3797fps.
once again i have no signs of pressure in regards to primers or re-chambering or case head expansion and case length stays pretty much the same"
INPUT VARIABLES
Firearm type Rifle Sight Height 1.5
Bullet Weight (grains) 130 Ballistic Coefficient .460
Muzzle Velocity (fps) 3790 Temperature 59
Barometric Pressure (hg) 29.53 Relative Humidity 78%
Zero Range (yards) 375 Wind Speed (mph) 0
BALLISTICS TABLE IN YARDS
130 interbond 130 gr., .460 B.C.
Range (yards) Muzzle 50 100 200 300 400 500
Velocity (fps) 3790 3664 3542 3308 3087 2877 2677
Energy (ft.-lb.) 4146 3875 3622 3159 2751 2389 2068
Trajectory (375 yd. zero) -1.5 1.1 3.0 4.8 3.4 -1.6 -10.8
Come Up in MOA -1.5 -2.1 -2.9 -2.3 -1.1 0.4 2.1
Last edited by 340Wby; 09/08/09.
