Just got in from shooting the 458's over the radar. Out of my 23" barrel from the R8, the WM averaged 2125 at the muzzle, and the Lott averaged 2270 at the muzzle. Both were 500g Federal factory ammo. If there was any loss at all from the WM being fired in a Lott chamber, then I'm not sure why anyone buys a Lott today, lol. I will say though, that, unlike the first time I fired the Lott last week, today the Lott ammo seemed to be gentler than the WM ammo. Either way, if you can show me an animal that can tell the difference, under any circumstance within 100 yards, I'd be amazed. The difference in velocity at 100 yards, btw, was even less, 1924 for the WM vs 1980 for the Lott.
I will shoot the factory 400's for velocity as well, but I am pretty short on them right now and just didn't take them out.
Fortunately, my 405g cast bullets arrived today (.460) and I'm hoping I can get them over 2000fps without leading.
