Re: 338WinMag/300gr MK
That .760 BC caught my eye some time ago. I was crunching some numbers on JBM ballistics page and referencing the Sierra manual. It looks like an initial velocity of 2500fps at sea level would still be going over 1500fps and carrying a little over 1500ft lbs at 1000 yards. The same MV looks like it would be supersonic to beyond 1600 yards with a drop of about 60 MOA at 1600 from a 100 yard zero. That impressed me.
My Browning is obviously a fairly lightweight sporter and not the platform for serious long distance shooting. But, I will be doing some work with it just to see what the cartridge/bullet can do for velocity and accuracy.
If the potential is there I will eventually build (have built by a good gunsmith) a heavy barreled .338, with say a 28-30 inch barrel. I'm guestimating that if 2500 fps is attainable in 26" then 2550-2600(optimistic maybe) might be attained in the longer barrel. I would like to work with the smallish-for-bore-size .338WinMag for the sake of less recoil and blast, and longer barrel life. I figure If I want to go faster, rechambering to the UltraMag case is always an option, and not a bad idea if throat eroision starts to happen. MM