burlesontom
.50 Cal
- Joined
- Aug 19, 2018
- Messages
- 291
- Reaction score
- 244
I have been fighting with ball and patch in my 1:48 50 cal hawken, got to a good patch and lube but it does not shoot well at 100 yds. With a .495 ball and a .024 denim patch TOW mink oil lube at 48 yards I get a 2 1/2" grouping, but out at 100 it will spray in an 8" circle. Starting at 60 gr 3f all the way to 95 gr. raises the poi but still has a very good group at 48 but a big spread at 100. This patch n lube did the best at 48, but has no better pattern at 100. I wonder if a .490 would be better, has any one found an improvement with the smaller ball. (my bore is .500 .517 in the lands by slugging the bbl.
coupe
To me your ball and patch combination is way oversized. If you are having to hammer your ball down the bore your set up is too tight. I like a ball and patch that just takes a small bump to start down the bore and then slides with little resistance down to the powder. But I also use a firewall patch if using over 50grs of powder in a 50 caliber or larger bore.
A firewall patch is any patch material I have to absorb the heat of the flame from the powder charge. You don't need a super tight ball/patch to start with. If you have ever read the Lyman BP manual you read that the pressure from the exploding powder will foreshorten the round ball so it fits the bore and patch for a tight fit when leaving the bore. The firewall patch protects the ball patch.
I can pick up up my ball patches and they can almost be reused. The firewall patches are pretty much burned up. I get fine accuracy out to 90 yards which is about as far as I test. Beating the ball down the bore with a too tight ball/patch combo will almost guarantee poor accuracy.