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Cas City Forum Hall & CAS-L  |  Special Interests - Groups & Societies  |  STORM (Moderators: RRio, Major 2)  |  Topic: 1860 Piestta Cylinder slot rebuild 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: 1860 Piestta Cylinder slot rebuild  (Read 334 times)
rbertalotto
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« on: September 24, 2017, 06:48:14 am »


After five years and thousands of rounds fired through my 1860 Pietta Sherif model revolvers, the cylinder slots have worn out to the point where the cylinder stop doesn't always stop the cylinder in the right place and the firing pin hits the rim of the cartridge rather than the primer. The slot is actually "peened" where the cylinder stop engages.

I ordered a new pair of cylinders and all is well again.

I was told by Kirst, that because these cylinders are designed to be drop in, and the diameter needs to be slightly bigger than the original C&B cylinder, the "stop" area of the cylinder slot needs to be relieved. Some Piettas don't drop the cylinder stop enough to release the cylinder to turn on the next cocking. This leaves VERY little material for the cylinder stop to bang against and after lots of SASS slip firing, they are peened to unusable.

OLD


NEW


On the old cylinders I'm going to TIG weld this area up and recut and adjust the cylinder stop for perfect engagement. Who knows, it just might work!

Comments?
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Roy B
South of Boston
www.rvbprecision.com
SASS #93544
rbertalotto
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« Reply #1 on: September 24, 2017, 06:52:32 am »

BTW...There are a number of articles about my adventures with the Colt 1860 (Pietta) and other gunsmithing adventures on my web page:

http://rvbprecision.com/firearms
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Roy B
South of Boston
www.rvbprecision.com
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Professor Marvel
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« Reply #2 on: September 24, 2017, 02:03:52 pm »

My Dear Roy

Since I have the habit of acquiring cheap inexpensive  pieces of crap basket cases projects fromother people, I often find myself looking at  at battered cylinders and wondering....

I will be anxiuously awaiting  your further missives with wormy tongue baited breath!

yhs
prof marvel

ps thanks for sending me down yet another rabbit hole the link !
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Professor Marvel's Traveling Apothecary and Fortune Telling Emporium
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rbertalotto
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« Reply #3 on: September 24, 2017, 06:01:41 pm »

Glad to help with your worm holling!
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Roy B
South of Boston
www.rvbprecision.com
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45 Dragoon
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« Reply #4 on: September 24, 2017, 07:51:34 pm »

I just finished an Uberti for use as a CAS gun with a Taylor's/Howell drop cylinder. These also have a larger dia. rear section and of course are 5 shot cyls. which is the biggest problem. In order to get "true" perfect timing as a "five" shooter from a "six" shooter, the sear had to be lengthened, otherwise you go past the full cock notch for lockup. Correct timing has these occurring simultaneously. With the bolt block and action stop installed and timing advanced slightly for competition,  this close tolerance shooter will be "rented mule" tough for a looooooong time!!

I would think the bolt dropping (the second click during cycling)  late (or late timing) is what caused the "peening". The bolt should drop before reaching the locking notch. I simply remove the " peened" in material out of the notch to restore function in revolvers with this condition,

Mike
www.goonsgunworks.com
Follow me on Instagram @ goonsgunworks
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www.goonsgunworks.com
Follow me on Instagram @goonsgunworks
Rooster Ron Wayne
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« Reply #5 on: October 21, 2017, 10:51:15 am »

45 Dragoon .
Mike is always building Heirloom Quality Cap Guns and Conversion guns .
I have a 1849 Wells Fargo .31 with a .32 Cylinder and Cap Rake Done by Mike .
Timing is Perfect and the little gun will last Three Life Times .

If you ask me thats Heirloom quality !
Thanks Mike .

Remember to lube your balls .
And Car your Nipples .
Rooster .
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Cas City Forum Hall & CAS-L  |  Special Interests - Groups & Societies  |  STORM (Moderators: RRio, Major 2)  |  Topic: 1860 Piestta Cylinder slot rebuild « previous next »
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