I have a DTA A-1 Covert chambered in 300 Whisper.
The barrel is a Benchmark 7 twist chambered by TS Customs.
Working up loads with Berger 215 Hybrids, Vhit N-110 and Lapua brass. S&B 5-25 and TBAC Magnus-SR.
I found a solid load going about 1065 with a single digit ES/SD. I played with...