I have used the pioneer powder, actually Clean Shot, I could shoot about 5 shots or so before accuracy suffered and I couldn't physically shove a sabot down the barrel. And after 5 or 6 six shots you would be amazed at the amount of white flakey crud that comes out of your barrel when you run a brush down it. I can't imagine what would happen after 1,000!

I think pioneer is great powder but I don't realistically see a rifle shooting that many shots before it needed to be cleaned. I wouldn't shoot a centerfire or rifled shotgun with sabots that many times before cleaning it.

I actually clean my bore after every shot when target shooting with my ML. This way every shot is from a clean cool barrel, just the way it will be in the field. It's time consuming, but yeilds pretty good accuracy.

Paul