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velocity of bullet

gunzforevergunzforever Member Posts: 619 ✭✭✭
edited February 2006 in Perry Shooter Competition Shooting and Reloading Forum
ok, could anyone possibley tell me the velocity of this bullet, here is the load. it is .308

40.0 grains of IMR3031
a cci large rifle primer
a Hornady soft point bullet (130 grain)
a 21 in barrle

Thanyou and Godbless
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Comments

  • richbugrichbug Member Posts: 3,650
    edited November -1
    Best educated guess would be 2550-2600 fps.
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  • bpostbpost Member Posts: 32,669 ✭✭✭✭
    edited November -1
    If you look in your reloading manuals there is a list of velocities for each caliber that the load developed in a test barrel.

    If you subtract about 50-75 FPS for each inch of barrel loss it makes it easy to come up with a WAG on what your gun should be producing. But, without chronographing the load in your gun any guess could be off by a couple of hundred feet per second.

    Another way is to shoot it at 100 yards to ZERO the elevation. Then shoot it at two hundred yards to get the total bullet drop. By comparing the drop to the list in the book you can extrapolate the MV pretty close.
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  • CubsloverCubslover Member Posts: 18,601 ✭✭
    edited November -1
    Quoted from IMR website
    http://www.imrpowder.com/data/rifle/308win-2005apr03.php

    Case: Winchester Barrel Length: 24"
    Twist: 1:12" Trim Length: 2.005"
    Primer: Federal 210M

    Bullet: 130gr SPR HP
    Powder: IMR3031

    Min Charge: 42.0
    Velocity: 2827
    Pressure: 42,600 PSI

    Max Charge: 46.7C
    Velocity: 3130
    Pressure: 59,800 PSI
    Half of the lives they tell about me aren't true.
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