H4350 & Velocity Spread

[ashland]

Can anyone tell me an approximate value of how much a .1 of a grain will increase the velocity for H4350. I'm shooting 139 Scenars from a 24" barrel. I need to bump my velocity up about 40 fps. I've been unable to find any information on this.

Thank you.

 

[Rob01]

No way of determining that as barrels will be different. Anyone who answers with an "exact" number will be giving a guess at best. Just bump up.

 

[Abq-Defense]

My best guess is .6 grains. Like Rob said though, there is no way to be sure.

 

[ashland]

I tried to look up my old load tests and they were inconclusive about how much a .1 would make. I just bump it up and see. Thank you all for your replies.