Accuracy Help

[Snydly]

Yes, you will receive many suggestions. You are starting with a clean bore I’m sure. When you swab the bore do you notice any roughness at all anywhere in the barrel? Feeling for a spot tat might have a bit of pitting. This may or may not be there. If so a bit of gas might leak at this spot and affect accuracy.
I’m guessing the bore is in good shape.
i swab between shots. Some think this is unnecessary but I do it. Many still do it.
You want the consistency between each shot as you can get.
With each shot the pressure changes as each shot deposits a little more fouling. So I swab to get the best consistency between each shot.
Change you powder load. I was taught to try 5 grain increments but you can try 10 if you choose. Might try a different patch thickness.
Each piece likes its own diet.
Some things to think about

Just make sure you only change one thing at a time. whether it be the patch, the amount of powder, whatever. 1 at a time.

 

[longcruise]

I built four of those gpr kits and every one was a patch cutter. They all came around after working on the crowns and firelapping.

 

[flatcreek]

Went to Kempton yesterday and bought a possible bag and I think my shooting improved. Let me clarify the target. POA (point of aim), CAM-PC (patch cut a muzzle or pre cut) 1st group 5 shoots was lousy 60gr .018 cut at muzzle, bumped it up to 70gr for the 2nd and had an improvement. That was 8 shots with both cut at muzzle .018 patches and precut. The 3rd was 5 shoots, now that's what I'm looking for. This was around 30yds off bench, wiped between shots with damp patch, used Mr Flintlock to wipe and for lube, ball patch just damp. My analysis is amount of powder means a lot. Got more work to do and then move it out to 50yds. Not one hole but I think I'm improving. Thanks guys for all the help, much of the credit belongs to you.
Phil