Recent content by prsjohnb

Dr Mike, would you mind running QuickLoad Data for me on my set up with these powders and any others you think may be worth considering. 22” 7PRC ADG Brass (80.40 water case capacity) 175 ABLR 50k off lands Coal: 3.3065 Thank You.

Should I be concerned though that the upper end of the ReTumbo charge is nearly 5 grains more than the load you reference? I don’t have pressure signs, but I do know with good brass it may be over pressure and not show it. The last thing I want is to be unsafe. If I didn’t say it above, I am...

So what is your thoughts on what you see in the groups and velocity’s? Do you see a charge range you would consider testing further? I had someone else tell me that when you see the velocity flatten out or drop in one shot ladders, that tends to lead to higher ESs when you shoot groups.

I am new to this group and trying to find my way around. What I am doing is starting down the road of finding a load for my Seekins PH3 in 7PRC with a 22in barrel and Omega300 suppressor. I am looking to have it be as accurate as possible out to 600 yards and work in a range of temps from...