Just got a Rem. Exp. Tac 870 and since I have never had a shotgun before. I want to make sure I don't make an epensive mistake. 1- Can I fire 1 oz slugs with the factory choke on? I belive it should be safe since it looks opening up from the barrel diameter. 2- Besides running a patch to take anything off from inside the barrel, should I clean or oil anything else before firing? I have some Remington 00 buckshot and some Winchester Super X rifled slug for the session. Thanks for the input and excuse the ignorance. I'd rather ask it here rather than finding out in the range.... Wanna kill these ads? We can help!