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Ballistic Software help???

Can someone out there tell me what muzzle velocities to expect with different barrel lengths in a 260 AI?

Not sure all what information you need but plan to shoot 140 gr VLD's with around 47 grains of H4350 powder.

Just not sure about barrel length yet. somewhere between 26-30'

Cheers
BZR
 
Thanks for the input.

Do you/anyone have some good 260 AI loads? what worked for you and what was the muzzle velocity?
 

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