silverback
.410
Yep I haven't seen any issues with 7/8. Most of the info I found was if the pay load is equal or less it should be ok
still haven't ahd time to take the 28 inch accu-choke to to the range. I do like the idea of it fitting my 7 round mag tube. I called Mossberg to see if they had a 20 inch barrel with accu-choke that would fit the 7 round mag tube. No luck. oh well i am going to stick with the cylinder bore and accu-choke on the longer barrel. nice quick change setup. thanks for all who have helped.