Trying to Identify a possibly kit-built underhammer--Help anyone?

Status
Not open for further replies.

SpruceSniper

Member
Joined
Jun 26, 2016
Messages
15
Location
Olympic Peninsula, Washington
My uncle gave my dad an underhammer muzzleloader that was given to him by my grandfather a few years back. I'm trying to identify it to get an idea of internal components before I disassemble it-if I do, and ensure integrity of internal parts. It's been a few years since I messed around with a Lyman Deerstalker and another old parts muzzleloader that I no longer own. Here are a few pictures.

My best guess is it was assembled in the late 70s or early 80s. The only thing I measured was the bore to confirm it is .50cal. I'm guessing a 26" barrel but I will measure that later. Thanks to anyone who can get me started down the right path.
 

Attachments

  • underhammer1.jpg
    underhammer1.jpg
    112.9 KB · Views: 70
  • underhammer2.jpg
    underhammer2.jpg
    116.3 KB · Views: 67
Thanks for that fellas, these are the same that I seemed to learn last night after a bit of research. Appears it may be a good shooter! I'm going to get it good and clean in the barrel, (1-66?) and grab some balls (no pun intended) and take them up to the mountain here in a week or two, see how she does on some plates.
 
I believe the old H&A "Buggy Rifle" had a short barrel. Perhaps that is what you have. It looks like an attractive piece and I hope it gives you many years of enjoyment.
 
Sarge has my vote......these things appeared in every gun magazine from the late sixties to mid seventies in Numerich ads.

Tempted me but......

-kBob
 
I bought one back in the early 1970s, very accurate. My son has it now. Too bad they stopped making them, they were any inexpensive quality entry into muzzleloading.
 
Pete, that's a gorgeous example. I'm not too skilled in wood identification but that looks to be walnut to me...and I love the aperture front sight. It looks like a competition pistol if you ask me. In doing my research elsewhere, apparently a ton of those boot guns were also made.

The bottom line for this gun is harvesting deer-I think I mentioned that. Someone please correct me if I'm wrong but the impression I get is that compared to a siler-lock percussion, this is a simple, efficient design. (I believe I saw a side-by-side comparison of total parts between a siler and an underhammer, and there were far fewer pieces.) I used to mess around with BP about 4 years ago, but that was living in Alaska, and I was loathe to rely on it as a moose gun and then have no recourse for incursion by grizzly bears...so I gave up on it. (I had a felony conviction 13 years ago-Alaska is THE most difficult state to reinstate a right to bear arms and the only official channel in Juneau was "accepting applications but not processing them" due to lack of funding-or give-a-damn) Thus, at the time I was forced to use a BP rifle in some pretty sketchy territory...and no I was never successful. I'm in Washington state now, and presently about to file for a restoration as my attorney has advised me I meet the criteria for restoration of full rights and a removal of my name from the "Denied Persons" list with the Federal govt.

Despite this, here in WA, it appears I can enjoy my freedoms again before 2023, when I initially established my rights would be automatically restored in AK. Thus, as my dad is 70 years old, and showing it (I kept having to pick up things he dropped on the trail or in the brush) it looks like I will be able to enjoy a few hunts with him using modern by next season. That said, being legal with this BP is great, but I am once again excited by a black powder gun. So excited I got off-track...Is there a consensus regarding the ignition reliability of an underhammer compared to other perc-locks? I noticed one thing about the underhammer is that there appears to be no fire channel-it's just a nice wide open hole from where the nipple screws in, straight into the bottom of the breech. I recall there being a tapped and threaded hole for the nipple on my Lyman Deerstalker, but with a very narrow hole leading into the breech for the fire channel-this leads me to believe the underhammer will have more reliable ignition and hopefully less hang-fires which I had to contend with using the Lyman.
 
I bought my .50 cal H&A in 1987 and received sales brochures up 'til about 1993. The twist is 1/66" as you suspected and the fire channel is effectively an in-line. Keep your powder dry and you'll get ignition. Mine has never failed to fire when the primer goes off. I do give the primer a little pinch to insure it stays on the nipple but I've never had a problem with them. I'm a terrible deer hunter but mine has killed a lot of elk.
These are great little woods guns.
 
D2777F10-E5F5-4E2B-8BD5-ADABEC03054E.jpeg I have two underhammer pistols - the H&A as shown and the one pictured above by Bob Worthington at Greyhaven Arms. Both 100% reliable.
 
Last edited:
The pistols are both .50 caliber. Yes, I shoot them one handed.
Pete
 
Greyhaven Arms website will tell you a lot about Bob Worthington.
The gun that I have has a 12 inch barrel and is fire blued. You can see the gold glint on the barrel where the bluing has worn away.
A
Normal load is a 0.495” lrb., a patch made from 0.010” lubed ticking over 20 grains of FFg.
 
Status
Not open for further replies.
Back
Top