Barrel Length and Muzzle Velocity

[CoyoteChallenger]

Just a quick question. What will the velocity lose be going from a 26'' barrel to a 24'' barrel for the 7mm Rem Mag.

Thanks again everyone for your help
CoyoteChallenger

[Dick284]

Usually about 30-50fps/inch

Dependant on many things like the loading, and the particular barrel.

YMMV as always.

[209x50]

Yep, as much as 20 or 30 fps per inch and as little as nothing.

[LongBomber]

Are we talking cutting a 26 down to a 24? Then you would lose 25-50fps per inch. If we are talking about different barrels it seems like it is luck of the draw, depending as much on chamber and internal dimensions as barrel length.

[Traps]

Use the powley calculator at

http://kwk.us/powley.html

Select the cartridges list and it will fill in the 7 mm rem mag info.

150 gr is 51 fps loss