You were really stacking them in there
Cayugad. Good shooting. Have you tried FFFg in that barrel, or Pyrodex/T7?
I'd like to try .570 balls in mine. But dang it, I hate buying balls when they are so easy and cheap to cast. I don't know why Lee doesn't make a .570 mold. They have .562 and .575, but no .570. That just doesn't make sense to me because they make both .530 and .535 for the .54.
I know all about sweat in the eyes and would love to be able to shoot in eighty degree weather over the next few months. We will be seeing daytime highs around ninety degrees until next September. I have to hit the range by 7 a.m. to shoot for and hour or so before it warms up. You get used to carrying a towel on your shoulder to wipe your face just before taking a sight picture.

The other option is to head for the range on rainy/overcast days.