My Ruger #1 liked IMR 4350 with 140 gr bullets. Lately I've been working up a load with Nosler 150 BT and Ramshot Hunter powder. Have a few pounds of Hunter cause I use it in my .220 Swift. An article in Handloader, by JB, said it might work well in the swift and it does, very well. I'm still a grain below max in my 7x57 and I'm very happy with it.
When we're done with the rain and social distancing I'll will continue on. This is one target at 100yds. It might be worth a try in you 7x57's also.
[Linked Image from i.postimg.cc]fallout 4 semi