16.5” 6.5x47L

[BoomerC]

I’ve got a 16.5” proof steel being spun up right now for a Curtis Axiom and are curious as to what velocities people are seeing with the 110s to the 143s. I am hoping for 2500-2550 with the 140s. 2750 with the 110 hammer hunters.

 

[BoomerC]

Anyone?

 

[b6graham]

Anyone?

Not likely to find much.

Take a load from a 24" barrel and subtract 200fps. 25fps per inch. And your numbers look right

The super short barrels do tend to lose a little more per inch below say 20"

 

[jmsdad]

I have a 6.5x47 Kimber Montana with a 21" barrel which clocked around 2750fps with a 130gr Berger VLD-H. I cut the barrel to 18" a few years ago and its going around 2675fps with the same load/bullet ( 37.3grs Varget, 130gr Berger VLD-H, CCI BR4, Lapua brass). You will lose/gain around 25-30fps per inch, but the shorter barrel makes for a faster handling, easier to carry rifle. It's my favorite back country packing rifle.

 

[BoomerC]

Appreciate the info

 

[Painless300]

I have a 16” barrel for my DT. All I shoot is Berg 130 hybrids over 39.2g of Varget and getting 2810 FPS with my TBAC U7, never shot this load unsuppressed.