TW, I hate to verbally confront someone who has a similar opinion to mine about the worthless money pit that barrel work is, but how in heck do you determine that a certain wad does not "obturate" in a certain barrel?? Don't tell me that you chronographed loads with that load and another load with a different wad and they differed by thirty five feet per second at the muzzle. I would like a real answer.