Welcome to NE.com. This is a great community for double rifle afficionados.

Congratulations on your purchase. Let's hope it is the first of many.

As to loading, I think you will find that you will need to stay pretty near the regulation load for your rifle to get it to shoot right. The 9.3x74R is a great caliber. You should like it a lot. It has a broad range of uses.

Curl