Re: 300 Blackout - Random build
Got this shooting today, no groups to post as I'm just trying to get the velocity worked up first.
The only powder I had on hand was h4198, so that's what I attempted to use for both sub-sonics and super-sonic loads.
Results were all pretty slow.
Sub-sonic loads I tried (H4198, 208Amax, LC Brass, Mag primer)
Charge, velocity
10.0gr H4198, 755 ft/s
11.0gr H4198, 845 ft/s
Super-sonic loads I tried (H4198, 150gr Sierra soft points, LC brass, mag primers)
Charge, velocity
13.0, 1228 ft/s
14.0, 1303 ft/s
14.5, 1297 ft/s
15.0, 1365 ft/s
15.5, 1457 ft/s
16.0, 1492 ft/s
None of the loads had any pressure signs, the subs would cycle the bolt most of the time but not always, and everything above 15.0gr cycled the bolt for the supersonics.
AXEMAN - I'm pretty pleased with the barrel so far, it seems well made and was pretty affordable. Hope your build goes well, I'll be watching for a picture one of these days.