Triple777, I thought short seating does not cause a problem with ML. I thought blackpowder would build less peak pressure with a short seated projectile than a tight one. But as smokeless, the tighter the prectile the more pressure and faster burning it is.

Reason I say that, I had a hard time switching to sabots from my sidelock years ago. I insisted on using maxiballs in my inline. I kept having issues with the maxi falling off the load. Once while getting out to the stand lowering my gun barrel down, a maxi went all the way to the bore. Well anyway, it was fired before with a short seated load. But "experts" in the ML industry told me peak pressure would be less in that situation. I may be wrong.