Re: .300 win Mag, about to jump off the deep end
With the 208 grain Amax's you should stay supersonic to around 2000 yards depending on altitude.
I am shooting them at 2960 fps out of a 26" Shillen barrel and they drop subsonic at 1950 yards at 4200 ft elevation (where I went shooting last weekend) and 2100 yards at 6500 ft (where I live).
I am using 77.9 gr. H1000. necksizing with RCBS die til they they feed tight then bump shoulder back .003.
P.S. You will really like the wind drift with these bullets too. At 1000 yards a friend of mine was getting 7 moa of wind with 165 grain SSTs while my 208s were only drifting 2.5 moa.
Last edited by DT7; 04-26-2011 at 01:22 PM.