Re: .300 RUM loads, pressure signs?
Usually its no big feat to achieve 3300 fps MV out of stock mod 700 rem 26" bbl 300 rum. in my experience 94-96 gr RL25, Fed 215, most any jacketed lead 180 bullet--ab, partition, etc. not barnes all copper. OAL max to fit magazine-usually 3.650 or so. You may have a rather sharp edged ejector hole in your bolt. If you use a chrono, I would try edging the load up in small increments to increase velocity if you want keeping watch for other pressure signs as well. My experience with rem brass in the 300 rum is that when you are running too hot the primer pockets don't last long (primers seat loose after 1 or 2 firings). I don't run 180's anymore out of my 300. I like the 200 ab better at about 3150 using rl25. It seems to me that you are running a pretty darn mild load to be getting ejector plunger marks on your brass. My favorite load is 92 gr RL25, rem brass, fed 215M, 200 gr AB, OAL 3.650, 3150 fps ave @ 15 ft. My most accurate 180 gr load was 96 gr RL25, rem brass, Fed 215, 180 gr SST, Oal 3.650, 3380 fps. That 180 gr load was plenty warm. A lot of guys use retumbo in their 300 rum. I couldn't get the accuracy in my gun.
Last edited by mrultramag; 09-27-2008 at 03:06 PM.