Col. Batguano
75 Cal.
- Joined
- Feb 10, 2011
- Messages
- 5,034
- Reaction score
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I'm still working up a load for my 38 cal Lehigh (48" FCI barrel). I started at 40 gr, FFFg, and have been going up by 5 gr at a time. So far I'm up to 50 gr FFFg and the .015" patches are still being shredded. .375" 83 gr. ball. RB rifling 1:48" ROT. FCI barrels are milled about .001"-.002" tighter at the crown than they are at the breech, so they're a bit tight to get started, even with a short starter. I tried using .018" patches ONE time, and I had to use a hammer all the way down the bore to get it in. 10 shot groups @ 25 yards (benched and sand bagged) are running 2 1/2"-3 1/4", which I think is too big,
What have you guys found to be your optimal RB loads in this, or calibers close to it (36 or 40)? I'm thinking that with a lighter ball it takes a greater powder charge to upset the ball (less mass) to get it to obdurate in to the rifling.
Thoughts?
What have you guys found to be your optimal RB loads in this, or calibers close to it (36 or 40)? I'm thinking that with a lighter ball it takes a greater powder charge to upset the ball (less mass) to get it to obdurate in to the rifling.
Thoughts?