WB
I've told the story a while back, shooting my
Monday, December 14, 2020, 19:11

New Vaquero in .45 Colt when suddenly the ammo lost some zip and my 2" groups grew to about 4-5" at 25 yds. at the indoor range. Loading another round of SWC I remembered I did not load any .45 Colt SWC ammo. They were .44/40! No harm and they fired ok. Mashed back into .44-40 later too.

Until I ordered my Uberti/Navy Arms Saddle Carbine (it's in but my FFL has not called me) my only vehicle was a rechamebred .44 Mag. SBH cylinder. The cylinder throats would give Huey the hives, they are of course 0.431" as typical. However I used a 0.430" piloted reamer to rechamber the .44 into a .43-40! That helped shoot for concentrically perfect chambers, which should at least give hope. I just load 0.430" or so bullets in my .44-40 cases. I'd rather be 0.003" too big than too small. It shoots great.

Maybe they will work in the spaghetti levergun too.