I found this forum by looking for 7x57R and 8x60S loads, and finding several posts here on the 7x57R in drillings.
These are old posts, so I am apparently unable to ask questions, so i will ask here.

I have a J.P. Sauer & Sohn 7x57R - 20 gauge combination gun. I have been trying factory loads
S&B 139 gr
S&B 175 gr
Hornady 162-gr SST
Norma 150-gr spitzer flat base
RWS 154-gr SPT

I am working on loads for all those weights, plus the 120-gr Sierra and Nosler BT, and would like to share experiences with others.

Thank you.