The 6UM

[JDMBEND]

Anyone have experience running short barrels 16-18”?

 

[bielenbm]

I’m running an 18” and it seems to be on the slow side 3080 mv with the 115.

 

[bielenbm]

I got the 116s today. Loaded some up for tomorrow!
They look good in the 6um brass!

 

[JDMBEND]

15 rounds of 116 TMK’s
65 grn N570
ADG 6 UM-30 Brass virgin
Fed 215M primers
2.9
3093 fps
SD 10.2 ES 36.5
Barrel now has 65 rounds
1 shot to confirm zero
17-20 mph wind, 48 degrees, 3800’
14 rounds off bag PRS barricade
Shooting on a oem Tikka stock until one of my Rokstok’s showa up. Tikka action, Prefered 20” Tikka hybrid.
Shooting 8-10” plates 350-550 yards
Spotted EVERY shot. No signs of pressure. Going to load up to 65.5-66 grains and see what happens. Hope to get to 3200-3300.

 

[bielenbm]

15 rounds of 116 TMK’s
65 grn N570
ADG 6 UM-30 Brass virgin
Fed 215M primers
2.9
3093 fps
SD 10.2 ES 36.5
Barrel now has 65 rounds
1 shot to confirm zero
17-20 mph wind, 48 degrees, 3800’
14 rounds off bag PRS barricade
Shooting on a oem Tikka stock until one of my Rokstok’s showa up. Tikka action, Prefered 20” Tikka hybrid.
Shooting 8-10” plates 350-550 yards
Spotted EVERY shot. No signs of pressure. Going to load up to 65.5-66 grains and see what happens. Hope to get to 3200-3300.

Is your barrel a 30 or 40? What was your jump? I had a few issues, bipod made a volleyball size group… went to a bag and it was better (1.8 moa for 7). My Labradar was being a POS so I didn’t even get a speed…

18” 6-40
66n570 with a 30 tho jump.

I’m not exactly happy with the group hopefully I can tighten it up some.

 

[JDMBEND]

No idea what the jump is , loaded to 2.9 coal and shot it. After the barrel is broke in, I may jump in the rabbit hole.
It’s a 30