Re: 30 378 starting load data needed
It sure is about time to talk about the big beasts again.
I still have the same stock Accumark but with a Tooley MBR stock on it. About 12 lb. The rifle printed 8 under 2.5 inches vertical at over 1k the other day so I just have to try it some time this summer in an official match.
I already screwed up my 10 match agg this year by missing a wind change between sighters and match rounds during the first shoot and blowing four off the paper.
Yep I'm into 1k BR. I am presently using a 16.5 lb 300 Wby but am working on getting a heavier profile barrel for the 30-378. As you know cranking 15-18 rounds out of the factory tube sure warms things up in a hurry. I have been putting it through it's paces. Shot 50 shots, 5,300 grains of powder last Saturday through it without cleaning just to see the effect. Was still busting clay birds at 1K at the end.
When I get the new barrel I will probably be working mostly with the 240MK but those 200gr Accubonds will not be left out during testing.
Just curious, in your custom barrel what's your OAL to touch with a either a 200MK, 220MK, 200 Accubond, etc?