Sounds great so far. My traditions kentucky flintlock rifle will shoot almost thru the same hole at 20-40 yards with 40 grains goex 3f. If your rifle is like mine and your bullets are working out for you, you should be shooting under 2" groups at 100yards. I dont shoot sabots and never had experience with them so its hard to say what will happen from 25 to 100 yards. The tent is a good idea lol. If you've been getting that much rain, its worth a try. Get one at wal mart for $20. 5x7 i belive the size is. Move out to 50 yards now, sounds like 25 yards is already good lol.