B and I disagree on this subject obviously

.
As someone who oneballed a running HS Mercenary(and tourney player) at 60 FEET, 6 and a half mins into this video,
Village Game , shooting .685 paint through a .693 barrel(a feat I repeat with regularity) I call BS on all things regarding paint to barrel match.
Unless the paint is so small it won't be held by the detent, it just doesn't matter as long as the barrel is smooth. If the barrel is not smooth, it will shoot like poo.
I shoot small paint through big barrels all the time with great results including 30 shots a 12ie, and though I haven't done true scientific experimentation to prove it doesn't matter, THAT'S BECAUSE GLENN PALMER ALREADY DID IT! Glad not to have to bother, Thanks Mr Palmer!
Rob