6mmBR in a 20" bbl, anyone know how fast w/105s?

[6.5BR]

8 twisted of course. Thanks.

 

[steve123]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

Probably 2800-2850 fps.I was getting 2940 fps with a 30"

 

[FequalsMA]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

I run a 24 and get 2925ish with a 105, kinda peppered up though.

 

[6.5BR]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

FYI, I ran 26" P-C 3 groove - 28.5/Varget non moly at 2850 in Lapua, but know some run up to 30.5 gr. - not sure of pressure w/either end.

You guys running same powder? Thanks.

 

[brand692]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

2800 is a safe bet.

 

[6mmFan]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

If you want good groups with a 24" about 2830 fps +-.

So with a 20" around 2730, 2740 (plus or minus)

 

[6.5BR]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

Thanks guys.

 

[6.5BR]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

FYI, over on another forum, couple of handgunners reported just over 2600 w/30 Varget 108s and another 2450 in same length. Looks like a big drop under 22 or so. Thanks.

 

[steve123]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 6.5BR</div><div class="ubbcode-body">FYI, I ran 26" P-C 3 groove - 28.5/Varget non moly at 2850 in Lapua, but know some run up to 30.5 gr. - not sure of pressure w/either end.

You guys running same powder? Thanks. </div></div>

30.2 grains Varget is what I used.

 

[seddo]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

i can get 3000fps with 75gr projies out of a 18" barrel.

 

[6.5BR]

Re: 6mmBR in a 20" bbl, anyone know how fast w/105s?

Thanks Steve, and Seddo.