I have a CZ combination in 7x57R and 12ga. It is a modern one but don't think it is the model illustrated as the frame is more Vee'd at the point the stock joins and the scope mount rear sight is different. I just use regular book loads for reloading both it and my 7x57 bolt gun. My CZ shoots the factory Sellier & Belloit to right around an inch with the scope and I haven't really experimented with it very much and it just more or less sits in the gun cabinet. Nicely built and fitted gun that I had intended to take to Africa for Guineas and Impala but never worked out.