Shorty velocities

[ss7]

I'm getting ready to send off a .308 to be rebarreled at 20in with a 1-10 twist. What kind of velocities should I expect with 208 to 220 grain bullets?

My hope is to use the Varget I have. What are your powders, grain weights, and velocities?

 

[ss7]

Re: Shorty velocities

Are they embarassingly low? Should I reconsider?

 

[Rprecision]

Re: Shorty velocities

I think they would be slow anyways with that bullet weight. Most .300 WM shoot that bullet weight

20" is a good length, may think about 175's as a option too

 

[LawnMM]

Re: Shorty velocities

Probably 2300s or lower

 

[MitchAlsup]

Re: Shorty velocities

My guss is that you be happier with heavies with a 26" barrel than with a 20" barrel. Heavies need the longer barrels to get the velocity they need to outpace the 175s or 155s.

 

[ss7]

Re: Shorty velocities

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MitchAlsup</div><div class="ubbcode-body">My guss is that you be happier with heavies with a 26" barrel than with a 20" barrel.</div></div>

The primary purpose of the 1:10/220 combo is subsonic.

 

[ss7]

Re: Shorty velocities

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LawnMM</div><div class="ubbcode-body">Probably 2300s or lower</div></div>

2300 with a 220 would be perfectly adequate!

 

[LawnMM]

Re: Shorty velocities

For the 208, lower for the 220

 

[ss7]

Re: Shorty velocities

I figured that would be the case.

The 20s seem to be a pretty big hit right now.. so I have high expectations.

 

[RedGoat]

Re: Shorty velocities

Here is a link to the data I collected while working with the 208 out of a 17" barrel 208 amax & RL-17