Sunday, May 26, 2013

Underhammer Pistol, in progress

This frame was sent to me by a person (I forget) from www.garagegunsmithing.com (closed for repairs). The barrel, trigger, hammer and other parts have been cut out and then added. Hammer spring is from the hardware store and was intended to be a screen door spring. Barrel is from a DP Enfield .303 stub. Barrel total length is 6 inches long while the top portion of the frame is 4 inches long.

 Here are the internal parts, trigger attached to the frame with a 1/8 inch brass pin. Hammer has a low-temp silver soldered cup. The barrel and it's stub have been roll pinned vertically and low-temp silver soldered to the frame, it should not come off. The action has only a full cock position, no safety position. A wooden "H" is to be made to insert between the barrel and the hammer to hold the hammer in a safety position.
 Shown is the hammer all the way closed as in a "popped cap" position. Yes, there is a brass washer under the nipple, the threaded portion of that nipple is a bit long and protruded into the chamber area. This protrusion would keep the cleaning behind it troublesome.

Pulling the hammer down will release that "H" and have it fall away. Pulling down in the front of the hammer will set the action to full cock as shown here. The hammer cup has a split at the front to help in digging out a spent cap. Trigger and hammer are cut and shaped out of 1/8 inch hot rolled steel.
There are three 6-32 threaded holes to mount the two wood side panels to the frame. The side panels or grips have been band sawed out of the selected wood and are awaiting finishing. They will cover the frame completely all the way up to the rear of the barrel. Front and rear sights have not been decided upon.

That's all for now.

IdeZilla








Barrel changed, Jan/13/2014
.50 cal, 1:28 twist.
Back 10 inch portion of a barrel.
Purchased at "internet specials" from G.Mountain barrels while they were available.
Front heavy.  :-)










Jan/27/2014
New grips fitted, shaping in progress. The wood looks like Padauk.

IdeZilla














Jan/30/2014
Front and rear sights added.
 How it looks today.
Brass Plate on top of the frame, 22LR case as rear peep sight.
Top view.
Rear mounting screw hole is slotted to allow for very slight windage adjustments. Needs cleaning and polishing.
Front peep made from multiple sizes of brass tubing all soldered together. Faint line on the barrel top is made by putting a balance bubble on a file and gently sliding the file on the barrel.

IdeZilla












Jan/31/2014
Range Report
11 meters, .490 RB, 30gr of 777 FFFg, blue pillow ticking patch lubed with bore butter.
It hurts to shoot this one as the rear of the grip is still square and  a bit small.

First target at the bottom, second target at the top. 10 shot groups both targets.

IdeZilla








Feb/10/2014
Second Range Report.
11 meters, .490 RB, 30gr of 777 FFFg, blue pillow ticking patch lubed with bore butter.
About 12 or 15 shots ( I lost count :-) with POA at red dot.

IdeZilla

Yup, another shooter.


Notes:
The pistol grip has been thickened on the right side and a thumb rest has been added on the left side. This modification has helped in removing the pain in shooting this pistol.


That single hole up at the top between "1L" and "2L" is from a 7.35x52mm Carcano 1938 [SA] barreled rifle.


Feb/11/2014
Showing how the "safety" or half-cock works.
 Top view, how the grip has changed.
Left Side.
The "H" block holding the hammer in half-cock position for capping.
Right side.
Hammer filing on bottom, for looks.

IdeZilla









3 comments:

MrKrabs said...

Hello can you make me a copy of the frame?

Anonymous said...

If you read the post correctly you would see the frame was sent to him.

Anonymous said...

How did you attach the barrel