Spreader tubes in 12, 16, and 20 gauge throw patterns about like IC when using shotcup ammo. They consistently throw tighter than 16 and 20 ga WS1. I don't have enough experience with 28s. But .410 spreaders are just a smidge tighter than Winchester skeet. I can't see any difference when comparing it to Winchester mod.
So, depending on intended use, you might not need any other tubes. Moreover, you can unscrew the tube and get cylinder performance......dunno why anyone would want a cylinder choked .410, unless you intend to make a bet you can shoot a case on station 8 with no misses. Remember to clean the threads before reinstalling the tube.
Sam
