Thread: 7mm mag and 180gr ELDM

Originally Posted by r87mm

I had 2850fps from a 7mm rem mag. I didn't try for more speed but feel I was getting close. 2225,215fed, norma cases. Rifle had a long mag so could seat out with no compression. Was floating around 71gns of powder. Would think 2900fps might be doable but to get to 3000fps you'll most likely need a fractionally bigger case or runs at a higher pressure or longer barrel. Every rifle is different some will some won't of the same caliber. Best to go with one that is proven for that weight bullet and speed. Rl33 might be worth a try as it's often 100fps up on other powders. Unless you're consistently shooting over 1000yrds 2800-2900 is plenty

Plan is to run a 30" long, 8 twist barrel. The mag will allow for a COAL of 3.5" / 89mm so should allow for a reasonable length? How big was your old mag and/ or COAL?