i got a question. i plan to buy a 12 ga. Remington 870 shotgun. i hope to use it for deer, turkey, and hogs. is that a good plan? is it a good beginer gun? also, i have a .22 mossberg that my grandpa got for me when he was in college, and lately, it has been rusting beyond control. idk how to disassemble it, so i cant clean it as i would like to do.... what should i do????