Hello, this is my time ever writing, so please bare with my stupidity. I am in need of some serious help, I recieved a few rifles from grandpa I have one I just dont know anything about. It is a Belgium made Mauser, the bullets I got with this gun are what confuse me thet are 7mm Rem Mags that are Ackley improved and shoot a 6.5mm bullet.I have no idea what I have or what i should do with it any information on reloading or just general knowledge would be greatly appreciated, thanks for looking and im sorry if i waisted your time.