Nipple vent size

[ChrisPer]

I love my Uberti 1858 Rem, but people nearby are getting a facefull of powder spit from the gun when I shoot it. I also was developing quite a callous in the hairy side of my trigger finger which I later realised came from that spit. I am using RWS no 1075 (like No 11) caps, 21gn PPP Wano powder, a .357 case scoop of filler, and my homemade (50% beeswax, 50% olive oil and a bit of lard) grease over the ball.
Should I be pursuing this, or is it just par for the course? Nipple vent size and clearance at the chamber mouth are my two concerns. How can I determine what to fix?

 

[azmntman]

I love my Uberti 1858 Rem, but people nearby are getting a facefull of powder spit from the gun when I shoot it. I also was developing quite a callous in the hairy side of my trigger finger which I later realised came from that spit. I am using RWS no 1075 (like No 11) caps, 21gn PPP Wano powder, a .357 case scoop of filler, and my homemade (50% beeswax, 50% olive oil and a bit of lard) grease over the ball.
Should I be pursuing this, or is it just par for the course? Nipple vent size and clearance at the chamber mouth are my two concerns. How can I determine what to fix?

Dont shoot with people near by? :idunno:

Check cylinder/barrel alignment too, could it be lead from a misaligned cylinder? Nipple vent unlikely cause. I never had an issue with my revolvers acting this way :hmm:

 

[crockett]

I agree, it might actually be small bits of lead. Take out the cylinder and look at the rim on the back of the barrel to see if it is coated/plated with lead.
On a modern revolver there is a bore rod (forget the exact name)-Brownells sells them. You run this down the barrel and see if it runs smoothly into the chamber or it hits the side of the chamber. I'm sure something similar is done on black powder arms.
How to fix- the machining today is pretty good. It is unlikely the chambers are drilled out of line. More often there is a machining bur on the bolt opening or some similar thing that is causing the misalignment.
In most instances this situation doesn't cause much harm but there is always a lot of flash and flame with muzzle loading, probably the best thing is to space away from others. Don't leave loose powder on a shooting bench- I have a towel to wipe my hands and toss that over the flask while shooting.

 

[nhmoose]

http://www.brownells.com/gunsmith-t...s/range-rods/revolver-range-rods-prod655.aspx

 

[Flintlock_bob]

Can't see how it would be the nipple. It would more likely blow back in your face, not other people, well maybe it could squirt a little to the side? It is at the top of the gun your trigger finger is at the bottom, hairy side away from the nipple too.

My guess is cylinder to barrel gap.