To stick the thermometer in the roasted .458 Lott, it would be nice to have more pressure data comparing the SAAMI .458 WinMag, SAAMI .458 Lott and the wildcat.458 WM+. Just sayin'.
Ponder this, all Lottites:
To illustrate that the run-of-the-mill 24″ Ruger No. 1 barrel with .459″ groove diameter and .450″ bore (measured by slugging and pin gauging) is no slouch, here are some results with Lab Radar, all same day and 80*F:
Federal 500-gr TBS Solid 3.550″ COL: MV: 2419, 2408, 2406, 2401, 2405 mean = 2407.8 fps MV 100-yard: mean = 2106.4 fps
KE at muzzle = 6,436 ft-lbs for the 500-gr TBSS at 2407.8 fps The .458 WM+ loads in a SAAMI .458 WM Ruger No.1 beats a .458 Lott. Throat, throat, throat: Free-bore-boost.
Those handloads would make for some interesting pressure tracings at MIB, just sayin’.
Thank you Sir Ron for all of that marvelous work! Unbeatable, and from a Ruger No.1 (like mine)! I'm persuaded to get a fresh can of AA2460. I have new boxes of the 600 Barnes, 550 Woodleigh and 500 DGX, 2460 should be the right medicine for those!