Two years ago i bought a Pedersoli 1885 High Wall in 38-55. It has a 1-12 twist and slugs at .379. I bought the Accurate mould on the left 38-345A because the gun was designed to shoot a postell style or money bullet in the 300 plus range for sillywet shooting out to 500 yards . Im using Range lead alloy like i do in my 45-70 Sharps with zero problems and ive also used 20:1 and 25:1 alloy. The bullet on the left absolutley will not shoot for nothing. Ive tried many powder combos and lube to no avail and many times at 100 yards it wont even hit the target backer. Ive had keyholing and yawing from the start. I have sized this bullet from .378-381 and the results are the same. This bullet leads pretty bad. Ive shot this bullet from 1200 FPS to 1450 FPS and again,the results are the same. Overall bullet length is 1.248 and measures .380 from the top to bottom.
The bullet on the right is also a Accurate bullet that a guy in Canada sent me to try as he has a Pedersoli also and this bullet was giving him fits but he did manage to get it to shoot well for him and it shot well in mine.using his load.It is 38-328M and shoots good using my same alloy, lube and roughly same speed. It will print head on and group about 2' with MVA sights all day long. Overall bullet length is 1.189 and measures .380 from the top to bottom.
I also shot Accurate 38-250D and it shoots even better but its too light for out to even 300 yards i believe. Its basically a cowboy action bullet. Overall bullet length is .9219 and measures .380 from the top to bottom
What in the world could cause the 38-34A bullet to simply not shoot?
NOTE THE IMAGE IS BLOWN UP SO YOU CAN SEE THE BULLET CLEARLY