300wm & 195gr TMK

[zorak]

Have a 300am and want to shoot the 195gr TMK. Just wondering what your C.O.A.L. powder and primer

Thanks doug

 

[Berger.Fan222]

H1000 is my favorite powder for heavies in .300 Win Mag, but H4831 and H4350 can do OK also. I need a magnum primer for reliable ignition, and the Winchester does OK and is easy to find.

COAL depends on your throat, magazine length, and whether you need to load from the magazine. Some rifles you need to load longer than the magazine to reach the lands. Start by figuring out what your COAL is when you are barely touching the lands and figure out whether those will fit in your magazine and how important that is to you. If those will fit in your magazine, I'd start a few thousanths off the lands.