Got a 1894CB yesterday in .44-40... tried to slug the barrel with a .430 bullet and it came out at .429...is it safe to assume Marlin used the same barrels and just changed the chamber reamers between the .44-40 and the .44 Mag
Teal, your 1894CB 44-40 . Was it one of the original run or was it a factory conversion ? In "SHOOTING LEVER GUNS OF THE OLD WEST " by Venturinohe was sizing .427 for his 1894CB 44-40. Thats why I ask if you possibly had a conversion.
When I first got my 1894D, I slugged the barrel 3 times using .451 roundballs for my old cap & balls. Each time the micrometer read .4285".
I've noticed that cast (or jacketed) bullets of .430 or larger won't chamber due to a tight chamber neck. So, I size my cast to .429 which loads fine. I was a bit worried about some of the old High Velocity type loads using a .429/.430 bullet with the .4285 groove diameter, so I special ordered a .428 bullet sizing die from Lee and after using case lube on 'em I resize the jacketed bullets to .428 and they shoot fine.
Any know what the groove diameter of a 1894 in 44 Magnum is? I haven't had the chance to slug one. BTW, just for reference, a Rossi Puma in 44-40 slugged at .430.
This subject came up some time ago on the old Marlin Talk forum, after I mentioned that I had checked new Marlins and found them ALL to have .429 bores.
Lots of people said no way, or other less polite replies, but it's true! I asked at my local dealer if I could check the new Marlins he had, and all were .429", so I think they share a common barrel!