Worn slap out

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It looks like an old CVA lock that's not supported with a bridle for the backside of the tumbler. It has that tiny set screw for sear engagement. If you turn it upside down see if there's a slot in the tumbler and a small pointy thing in the slot, this is called a fly, if it's not there do not use a set trigger, you will break things. As to the CVA with the broken drum, are the pieces still in the barrel?
 
Jackrabbit1957 said:
It looks like an old CVA lock that's not supported with a bridle for the backside of the tumbler. It has that tiny set screw for sear engagement. If you turn it upside down see if there's a slot in the tumbler and a small pointy thing in the slot, this is called a fly, if it's not there do not use a set trigger, you will break things. As to the CVA with the broken drum, are the pieces still in the barrel?
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The complete CVA is at my dad's house. Only thing wrong with it is the bolster or powder drum is broke clean off.
 
Oh and in regards to the trigger group swap what I meant was could I fit the trigger group from the CVA into the deer hunter in addition to the lock from the CVA. I reckon the wood could be cut out to accommodate this. I always liked the weight and feel better on the deer hunter but found the set trigger on the CVA hawken to be a nice feature. Would love to combine them
 
Good thinking to keep those 2 pieces together. Fun thing about the broken drum is it literally holds the breech plug from turning, do you want to fix it?
 
If the drum is broken off the side of the barrel, the threads of the drum are most likely still in the barrel. Those could probably be removed with some kind of easy-out "thing", with a lot of pre-soaking and heat. At worse, it could be drilled out, and a insert could be threaded into the larger hole, with the center of that threaded for a drum. Or perhaps a new drum could be fabricated with larger threads. ? I bet Mr.Jack Rabbit could fix it.
 
I don't mean to be too critical, but I haven't seen a lock like that since CVA was making really cheap guns back in the 1970s. There is no bridle over the tumbler and if you don't have one then your trigger pull is going to vary from shot to shot. Also, the tumbler can rub against the lock plate hindering its fall. JMHO, but a lock isn't worth a darn without a tumbler, and not worth having. Dump it and find another lock. Even back then CVA also made a good lock with the bridle. Maybe you can find a used one somewhere.
One thing nobody mentioned - you could replace the nipple first. Or check it to see if it's still nice and flat on the top with a sharp edge. If not try filing it flat. A sharp edge is needed for the cap to go off every time. When shooting pistol matches on the national range all day, we'd replace the nipples anytime we started having troubles with ignition. Then in the evening while sitting around the campfire cleaning our guns and drinking some adult beverages, we'd dress em back to good. Good luck.
 
The CVA drum has a really long threaded shank that goes almost through the breech plug. It's gotta come out before the breech plug can be unscrewed. Yes was gonna offer to fix it for you. Thanks for the mention Uglyauace
 
Jackrabbit1957 said:
The CVA drum has a really long threaded shank that goes almost through the breech plug. It's gotta come out before the breech plug can be unscrewed. Yes was gonna offer to fix it for you. Thanks for the mention Uglyauace
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I remembered today why the bolster is broke off. The old man and I were trying to pull the breach plug because a cleaning brush broke off in the bore and as soon as he tried to turn the bolster to un screw it the thing just snapped off leaving the threads in the hole. I'll have to get a hold of it an shine my bore light in to see if it ain't all pitted. If it is I figure it wouldn't be worth fooling with. But if I see the bore looking good I'll have to take you up on the offer. I'll send you a PM to discuss payment if I like what I see. This will take a few days since the gun is at Dad's place and I'm working 6 days this week
 
paul harm said:
I don't mean to be too critical, but I haven't seen a lock like that since CVA was making really cheap guns back in the 1970s. There is no bridle over the tumbler and if you don't have one then your trigger pull is going to vary from shot to shot. Also, the tumbler can rub against the lock plate hindering its fall. JMHO, but a lock isn't worth a darn without a tumbler, and not worth having. Dump it and find another lock. Even back then CVA also made a good lock with the bridle. Maybe you can find a used one somewhere.
One thing nobody mentioned - you could replace the nipple first. Or check it to see if it's still nice and flat on the top with a sharp edge. If not try filing it flat. A sharp edge is needed for the cap to go off every time. When shooting pistol matches on the national range all day, we'd replace the nipples anytime we started having troubles with ignition. Then in the evening while sitting around the campfire cleaning our guns and drinking some adult beverages, we'd dress em back to good. Good luck.
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is this a better lock? Idk the terminology of this stuff so idk what you mean by bridle
Screenshot_20220505-204446.png
 
That would be a better lock. Speaking of terminology, a bolster breech plug, and a drum and nipple are two different types of ignition. Just saying! :) The lock above, and the photo of the other lock you posted both look like they are for a drum-n-nipple.
 
I've never heard a drum called a bolster. I could be wrong. A drum is just that, a little drum that the cone threads into, that screws directly into the barrel. A bolster is part of the breech plug. An example would be a 1863 Springfield rifle, or a 1861 Springfield rifle. I think the "Mississippi" rifle has a bolster breech plug. The 1863 Remington Contract rifle would be another example. But now you have me thinking that I have it screwed up!!! :) I'm no expert either, but I'm "pretty" sure that's how it goes.
 
DSC07382.JPG
Now ya got me worried. I would call this a bolster breech plug. it is part of the breech plug, not the barrel.
 
ppwt.jpg
Lyman Plains Pistol. Not a drum and nipple, what I would call a bolster breech plug.
 
No, the drum and nipple were the first, as far as I know. Most civilian rifles anyhow. More convenient for the small town gunsmith to manufacture.
 
Ugly Sauce said:
ROTFL.
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Yes he's a real wordsmith. He once got a friend of his on the phone convincing him to take apart his gen 1 Glock to look for a special marking on the inside of the frame that would make it a collectors item. When the guy got it took apart he asked my ol man what he was looking for and he told him "the logo for Mattel!"
 
Appalachiannative said:
I remembered today why the bolster is broke off. The old man and I were trying to pull the breach plug because a cleaning brush broke off in the bore and as soon as he tried to turn the bolster to un screw it the thing just snapped off leaving the threads in the hole. I'll have to get a hold of it an shine my bore light in to see if it ain't all pitted. If it is I figure it wouldn't be worth fooling with. But if I see the bore looking good I'll have to take you up on the offer. I'll send you a PM to discuss payment if I like what I see. This will take a few days since the gun is at Dad's place and I'm working 6 days this week
Click to expand...
Just let me know, that lock looks a lot better than the one you have. If you can find a CVA flintlock the percussion barrel can be set uo for the rocklock. CVA barrels are usually pretty accurate. Main thing is the crown at the muzzle if it's pitted she won't be real accurate. It can be recrowned as well and that should bring it back to life as long as the rifling isn't too far gone.
 
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