42 grains of H4350 is pushing my 109s at 2880 with a 16” barrel. I eventually want to try the DTACs with nose ring. The damage they create on elk is impressive!
That'd be spicy!
The damage is impressive however they've all been getting launched at very high mv. Believe the deep nose ring were starting to upset half way through animals, the standard cut was a bit deeper. For a 6cm, I'd probably go with the eldm, or 112 match burner. I got the new 22" 6cm out this morning, 41gr H4350 with 112s jumping 10k, running 2920fps. This was the first 5 rounds out of the barrel. Was pretty happy with my bore sight.
I specifically talked to UM about this for the 6 Creed and they recommended against it.
Freebore is already long with the saami 6cm, turn that 3° throat into the shallow +p geometry, and it'll erode very quickly. I personally would never +p any chamber.
How many +P barrels have you shot out?
A grand total of zero! Modifying a throats lead angles in the pursuit of 75-100fps eludes my logic. If it was all that, it'd be everywhere. I have shot out several standard lead geometry barrels, I know how it moves as I usually checked it every 300-400 rounds when I used to chase a jump. I know 1° of metal will erode faster than 3°.
I haven't seen that be the case in big 300s or 338s and +P treatments. I lost about 50 to 100 rounds of barrel life with them. Now, with 6mm, I have seen some issues and a very short barrel life.
1.5 per side, 3 total. Yes.
What twist and brass are you running?
1/7.5 twist and alpha brass.
