I love to shoot trap with my .410 and despite the small round, I am great with it and can out shoot many of my shooting friends but with a box three times the cost of a box of 12 gauge, my .410 shooting has reclined. That being said, I've been trying to shoot trap with my 870 in 12 but I've been struggling lately and I'd like to try a new set of choke tubes, because on my .410 I ran a full choke. Would a poly choke be a good route to go or should I purchase a set of tubes? And the 870 has a modified choke at the moment if that helps.