Bob,
Would the SST's installed "in-house" be Miller's as well?
David,
The only selector that I've used that seemed suited to change barrels in an upland hunting flushing situation, was the Win 21/SKB or similar trigger mounted button that you pushed to the left (for a righthanded gunner) to select the left barrel (commonly the tighter choked barrel). I found I could do this very quickly. I've never been good enough to select barrels on the flush with any other designs. Therein, I believe lies one of the reasons the double trigger is still popular among some upland hunters.
