Going to be shooting 75/77/88 grain bullets. Sticking with factory bottom metal, will the magazine work as issued or better to get one with better oal?
Factory bottom "metal" with factory magazine will allow an OAL of up to 2.300. This will work for your 77 grain bullets. With the 75 grainers, it'll work for Hornady HPBTs but not the ELD-Ms. The 88s are out of the picture and won't work.