Hands down the best power I've used in both my modern 7x57s is reloder 16. Alliant also list full power load data. I have 2 loads for a 140 grain pro hunter, one clocks around 2750 and is soft shooting, the other is 2870 or so and not so much. Same powder charge with a 140 partition is my main hunting load for that round and clocks around 2920. It's accurate and I've killed plenty of big mule deer, whitetail, and pronghorn with it.
Both my 7x57s are Remington 700 classics. Had an old Spanish Mauser I bought for $75 when I was 18 but I converted it to 45acp
Both my 7x57s are Remington 700 classics. Had an old Spanish Mauser I bought for $75 when I was 18 but I converted it to 45acp