Since my 20 ga and 12 ga BPS have 22 or 24 " barrels I thought my 28 ga BPS should be short too. So I first introduced the barrel to my chop saw and then a more intimate intro to my lathe. It is now 22 or thereabouts, Browning don't make anything shorter than 26" in the 28 ga BPS. Anyway a chat with Hawglips and I'm loading 1-5/16oz of TSS #7. Great pattern at 47 yards, I haven't counted it out but there are no holes. I think using BIG regular steel (relatively for the 28 vs 12) it will pattern just as well but I haven't got that far yet. And for smaller steel ie #3 I think it will spread, at least the factory ammo did almost to the point of being useless at 47 yards.
SO: it follows that TSS shoots tight ~ very happily surprised with this $49.00/lb shot, normal steel spreads, and BIG steel if it follows convention will be quite tight.
Now: I am sending this barrel to Briley for spectrum extended tubes, likely IC and LM.
PURPOSE: My intention was not to use tubes at all but I feel that with these two tubes I will be prepared for using any shot at any range.
I had an 870 Remington that I cut off and added a soldered on choke tube adapter, forget the name of it but it worked like a charm, maybe that would be one solution to the MOD12 dilema or even the Lyman adapter system and tubes.
For what it's worth......
"It's not the game but the chase ~ not the trophy but the race !" from my Dad, many years ago.