Velocity estimate for .308

[Dusty]

My ced chrono went down, and I am trying to get a estimate for the velocity on some rounds I worked up for a new rifle. Specs are:

Bartlein bbl 26" .299 bore
.308m118LR reamer
Win. Brass
Varget 45.5
Oal. 2.855
Cci br. Primer
95 degrees

Other load same rifle
Win. Brass
155 Scenar
46.6 8208
2.86 oal

I googled, but couldn't find any loads to match.

 

[targaflorio]

Re: Velocity estimate for .308

You didn't mention the first bullet

 

[Dusty]

Re: Velocity estimate for .308

I knew I forgot something, it was a 175gr. SMK

 

[BCP]

Re: Velocity estimate for .308

2700 and 2900 but that's a shot in the dark.

 

[Sonic Crack]

Re: Velocity estimate for .308

I chronied some rounds that may help or get you a better idea.

27" barrel .308
168 AMAX Hornady factory match ammo
2783fps avg, 2700fps advertised

27" barrel 308
165 Sie game king HP
2.711 COL, 45.5 of Varget
2768 fps

27" barrel 308
150 FMJ Fed Amercan Eagle factory ammo
2941fps avg

 

[Killswitch Engage]

Re: Velocity estimate for .308

your 45.5 load with a 26" barrel should put you around 2730-2750 with win brass.

no idea on the 155's

 

[MALLARD]

Re: Velocity estimate for .308

175 ~2700
155 ~3000