So another new guy question.... anyone have issues with S&B brass fitting into a #3 RCBS shell holder?
Up until now I was using a lee loader but picked up a press a little while back, tonight I was de-priming/resizing some cases and all the S&B would not fit into the shell holder.... the PPU, Remington was fine just the S&B was a little to large....
the RCBS site lists a 3 and 11 as fitting in the chart but when you click on them only the #3 says it fits the 7x57, the #11 was for 220swift, 225 win or 6.5 Japanese.
I think I will go ahead and get the 11 to see but just curious if anyone else has ran into this issue.
I had that problem with PPU brass back in the early '90's. I set the PPU brass aside and used brass that would fit the shell holder (generally Remington and Winchester brass).
As has been pointed out by others, case volume varies by manufacturer. So, it's a very good practice to separate your cases by head stamp to maximize accuracy and consistency . Keep that info in your load data.
You can expect excellent results with ordinary "cup and core" bullets at velocities in the 2,600-2,800 fps range (2,800 fps is entirely realistic in a modern rifle). I would suggest 140 grain Nosler Partitions for hunting deer or moose. That is more like the old "high velocity" load by Rigby (bearing in mind that the 170-ish grain loads were from the old military loadings for the 7x57.
My own experience with the 7x57 goes back several decades. I can tell you that the round is capable for any sort of big game that we are likely to encounter in North America (deer, moose, elk, black bear). There is no advantage, in my view, of hobbling the 7x57 with heavy bullets. Stick to 140 grain bullets and moderate to slow-burning powders (IMR 4320, 4064, 4350, H414) and be mindful of your bullet seating depth (so that you are not impinging on the rifling) and your rifle should do its job.
It's a good thing that you are chronographing your loads. Keep meticulous records and enjoy your rifle.