Would it be worth polishing a .410? I would like to get some #7.5 and try my gun out to 25 yards. What do you think, will it help and can it kill out to 25 yards is I can get 100 in 10"? What brush would you use? I am guessing it would be harder to do than a 12 ga due to size.
I would get 8's. Don't know about the polish though. 2 3/4" 7/8 oz #8 in my 20 gauge is awesome at 20 yds.
I would just deep clean it. It will kill out to it's MER, either way. JMHO..Mike