Loaded up a bunch of 300 Whisper ammo for my Bighorn TL-3 switch barrel.

Using Vhit N-110, pointed Berger 230s and Lapua brass going about 1070 fps. Right now it is holding about 1/2 - 2/3 MOA for five shots at 100. The chrono is showing single digit ES.

Going to play with seating depth to see if I can squeeze any more accuracy out of it.

Really really quiet through my Thunderbeast 338 Ultra.