I Have a reworked P14 303 British as my "truck" rifle, and it gets bounced around a bit, but is very dependable, and, I might add, Very accurate. Ballistics in my reloads are on par with 308 Winchester loads, so it is not exactly a slouch. My groove diameter is .313", and thus most 312/313 bullets shoot well. One exception is the .311 Sierra 180 Spitzer which, despite it's smaller diameter, shoots under 1moa right out past 300 yards. The lee-Enfields are not a reloader's dream, but if loads are kept to moderate levels, they do just fine. I have seen some amazingly accurate examples of these also. The rimmed cartridge has some disadvantages, but if put in the magazine carefully, seems to work just fine. For sheer firepower in battle conditions, the SMLE was a formidable weapon, and would work in atrocious conditions without a hitch. I have shot a couple of moose and several deer and Black Bear with the 303. Inside 300 yards (+-50), it does the job if the shooter does his. Regards, Eagleye