I have a Remington 870 with a Hastings cantilever-mount rifled barrel that has seen better days. Looking at Benelli M1 Field, Browning Gold, Savage 210F bolt-action, and Ithaca Deerslayer Storm (pump) slug guns. Anyone have any experience with the autos, in particular, with regards to accuracy? I know they're reliable guns. I like the Gold for the fact that the scope mounts to the barrel, not the receiver. I have never shot or known anyone who has put a lot of slugs through a semi-auto. Curious if their groups are as consistant as the pump/bolt-actions. Thanks.