Ballistics by the inch

Get a grip. Or make one.

A couple of weeks ago I posted about finishing a Liegi Derringer kit, then doing the laser work to customize the grips. It turned out well enough, so I decided to finish and laser a second kit, to use as a door prize for a black powder workshop I’m doing at the annual meeting of the Liberal Gun Club this fall in Las Vegas.

All went well until the time came to mount the grip to the receiver. The top mounting screw went in fine, after drilling a pilot hole. But the bottom one broke loose as I was tightening it. I took the top screw back out so I could see what the problem was. This is what I saw:

Almost looks like a tiny wooden shoe from this angle, doesn’t it?

See right there in the center? That’s where the screw broke loose, knocking out the adjacent piece of wood. Just a fluke of the grain on this piece of wood.

There are several ways you can repair a problem like this. You can use a longer screw. You can fill in the broken material with a good wood epoxy, then remount the screw. You can change the hardware to relocate the screw. There are probably other good, simple solutions, but I’m not a wood-worker.

So of course I figured that I’d do the most difficult thing: carve a replacement grip out of another piece of walnut.

See, we had to take down a big walnut in our yard some years back. Most of the big pieces of good wood went to friends who are skilled wood-workers. The rest became firewood. We still have some of the firewood, so I picked out a piece and chopped it roughly to size:

That’s a funny-lookin’ grip.

Next, I spent a couple of hours with a drill, a heavy wood rasp, and a Dremel, and got the new grip down to an approximate form:

Roughed out.

Then it was a matter of more detailed carving, to get closer to the shape of the original grip, and to make room for the hardware of the receiver:

Still a little bulky …

I had decided to make this grip a little more robust than the original, since I didn’t trust my skills to not over-do it and make a fragile grip. But I didn’t want it TOO big:

Pleased to meet you.

Once I was satisfied with the shape of the grip, it was time to laser the design into the sides. To get the designs positioned properly, I used some reference tape:

I did the laser work, then stained the grip and polished it slightly. Assembly went just fine, and the mounting screws set without a problem. Here’s the finished product:

I’m pretty happy with the finished product, and hope whomever wins it will enjoy shooting it.

Jim Downey

August 4, 2022 Posted by | Anecdotes, black powder | , , , , , , , , , | 1 Comment

That takes balls.

I recently picked up a little Pedersoli Liegi Derriger kit. One of the other BBTI guys has one of these things, and I’ve always considered it a cool little piece of firearms history. Cap & ball firearms technology came along in the early part of the 1800s, supplanting flintlocks and earlier ignition systems. The Liegi design was very popular as a basic pocket/boot/muff small handgun, because it was relatively easy to load and carry, and lethal at close range.

The interesting thing about the Liegi is the loading system: you unscrew the barrel, load the powder charge in the chamber, place a round bullet on top of the powder, then screw the barrel back into place. It’s simple and fairly foolproof, and doesn’t even require a powder measure — you just fill the chamber with black powder and it’s the correct amount. Once the gun is loaded and the barrel is in place, you draw the hammer to half-cock, place a cap on the nipple, and the gun is ready. Here’s a short video showing all the steps:

In addition to doing the minor prep work on the walnut stock of the gun, I wanted to add some laser engraving on the side panels. Because it amused me, I decided to use the same basic pattern as I had used for the grips of a very modern handgun, my Customized Timberwolf G21. Here’s a pic of the finished product, and on the next page are pics of the process and comparisons to other small handguns I have:

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July 17, 2022 Posted by | .22, .357 Magnum, .38 Special, black powder, Boberg Arms | , , , , , , , , , , , , , , , , , , | 5 Comments

Customized Timberwolf G21

Some years back I got a Timberwolf frame for my Glock 17 from Lone Wolf Distributors. It was shortly after they were introduced, and I liked the idea of the 1911-style ergonomics. I was very happy with it, and only wished that they had one for the larger caliber Glocks.

But as such things go, I never got around to following up and getting one when I heard that they had developed a larger frame to accommodate 10mm and .45 caliber Glocks. But I had recently introduced a shooting buddy to the 9mm Timberwolf, and that reminded me to look into getting one for my G21 I have set up to handle .45 Super. This one:

Here it is with the .460 Rowland barrel and compensator. I seldom shoot it in this configuration now, and the pics below show it with the .45 Super barrel and compensator.

And I was pleasantly surprised when I found out that one option when ordering the Timberwolf frame is to get it without any texture. The idea is that Lone Wolf offers some different laser-texture designs as upgrades. But since I have my own laser

… I decided to do my own custom design. Not just for the Grip, but as something of a theme for the gun. I could have completely personalized it, but decided that I wanted to stick with something which might be of interest to someone else, should I ever decide to sell the gun. So I came up with a geometric motif I liked which I thought would give sufficient grip texture to handle the fairly powerful .45 Super loadings. So what follows are pics of the process:

Bare frame.

First, I did the grip sides with this “3-D Cube” motif.

Then I added diamonds along the side of the front of the grip. This was slightly problematic, since my laser has limited focal range, and I couldn’t just stand the frame up to work on the front of the grip directly.

The backstrap was easy to do with isolated 3-D Cubes, since it is a detachable piece.

I like having some tape on the front of the slide, so came up with this simple design based on the 3-D Cubes.

Finished product, view 1.

Finished product, view 2.

Finished product, view 3.

Finished product, view 4.

I have already had a chance to shoot it with this configuration, and was really happy with the way it felt in my hand. The texture was fine, and I felt like it wouldn’t slip around even if my hands were wet with sweat, etc.

And I’m very happy with the new Timberwolf frame’s ergonomics and how it points more naturally for me. Glocks are good guns, but they have always felt a little awkward in my hands, requiring more attention for me to shoot consistently well. This has solved that issue.

Jim Downey

PS: No, I’m not available to do custom laser work. But you’re welcome to see the full range of designs I do have available here: http://enlightened-art.com/index.html

December 11, 2020 Posted by | .45 ACP, .45 Super, .460 Rowland, 10mm, 9mm Luger (9x19) | , , , , , , , , | 1 Comment

Boxed sets

Remember the post about the various large cartridges?

Well, I made a display box. Actually, I made three — one for each of the BBTI team members. And now that I’ve given the other two guys theirs, I can share pics:

20200811_154649

That’s all three boxes. They’re simple plywood exterior, with the interior of acrylic. All of it cut using my Glowforge laser. Here’s a detail shot:

detail

The boxes were designed so that the cartridges can be easily removed so that people can actually handle them.

open mostly full

And they close up for safe storage.

clasp

Just thought I would share these.

 

Jim Downey

 

 

August 24, 2020 Posted by | .44 Magnum, Links | , , , , , , , , , , , , , , , , , , , , , | 1 Comment

From Gatling Guns to Laser Pistols.

Again, it’s been a while. Partial explanation towards the end of this post.

So, the BBTI team finally got together to do something we’ve been wanting to do for several years now: shoot a Gatling Gun. Yep, a real, honest-to-gawd Gatling Gun. Well, not an original, but a faithful reproduction of the original 1862 patent version, in .45 Colt. This one:

Keith checking the gavity-fed magazine.

It’s such an iconic weapon, having been used around the world for about 50 years (from the American Civil War until World War One). And almost anyone who has seen Westerns has probably seen one depicted on the screen. So when the opportunity presented itself to get a fine reproduction one at a reasonable cost, we jumped on it. And last weekend we were finally able to coordinate our schedules to get out to shoot the thing.

But first we had to assemble it, because it breaks down into several components for ease of transport and use. Overall, the whole thing weighs more than 300 pounds. The main element is the barrel & mechanism assembly:

Barrels & mechanism.

We’ve got a nice tripod to mount and shoot the gun. Here we are assembling that:

Tripod base.

On top of the tripod is a pivoting mount, so you can rotate the gun from side to side. Into that goes a yoke mount, to which the gun is secured. Elevation is controlled by an adjustable wheel screw at the back.

The way the gun works (the Wikipedia entry is pretty good, as well) is that you put the cartridges into machined sections of heavy steel tube called a ‘chamber’ (essentially, a section of barrel), and those are placed in a magazine. The magazine goes into the top of the gun, upside down. Each chamber drops into position behind a barrel, then is pressed forward and locked in place as it rotates to the next position. The barrel then rotates again into the firing position, a firing pin ignites the cartridge, and the bullet fires. As the barrel rotates again, the chamber is released, and falls free out the bottom of the gun. This process is repeated for each barrel in turn as long as you turn the crank and there are chambers in the magazine.

Here you can see a test run with empty chambers to make sure everything feeds and falls properly:

 

Success!

Next, we wanted to make sure that the firing pins were working properly:

After that, it was time to load ammo and give it a try.

I’d loaded 1000 rounds of .45 Colt, using 200gr lead bullets and 6.1gr of Titegroup powder. This is a mild handgun load, but we weren’t looking for a lot of power, just a lot of fun. Still, out of the 30″ barrels we were probably getting about 1,000fps and roughly 450ft-lbs of muzzle energy — a respectable amount of power.

Here’s Keith of the BBTI team giving the Gatling Gun its first live-fire trial;

Yay! It worked!

Soon, I got my turn:

Dude, that’s way cool.

OK, several things we discovered in shooting the Gatling Gun …

One, you quickly realize that once you start turning the crank, you find there’s an optimal speed where it feels easy and consistent. I got there at the end of the video above.

Two, you can go through the 44 rounds that our magazines hold in about 20 seconds when you know what you’re doing.

Three, it helps to have someone actually hold the magazine in position, rather than relying on the small set-screw to hold it.

Four, the gun is surprisingly accurate and consistent. Once we got the hang of it, at 20 yards (the effective distance we had to shoot it), we were all getting paper-plate sized groups. Like this:

The first target. All the rest were this good or better.

Seriously, I was very surprised by this. I expected something more like “minute of cow”. I look forward to shooting it sometime at longer ranges to see just how good you can get with such a gun.

After we all had fun shooting the modern ammo, it was time to try the gun with black powder cartridges. Specifically, 30gr of Goex FFg and the same 200gr lead bullet. I shoot a fair amount of black powder, and know that it can be messy … but man, it was an incredible mess in the Gatling Gun. But it sure was spectacular. Check out the long tongues of flame from this sucker:

And just think about what a battlefield with a bunch of those cranking out rounds would have been like. Blimey.

Now that we’ve finally had a chance to get together for an inaugural shoot of the Gatling, it’s something that each of us is going to take for a while, and share with friends. Look for more coverage of it in the future.

So, what was that about Laser Pistols, and why have I been so absent/quiet here for so long?

Well, about a year and a half ago I got a Glowforge laser cutter, which I mentioned in passing in my post last November. I kinda fell into a deep hole playing with it since then. But it’s all good, because one of the things I have been doing with it is making a whole bunch of handgun display models/art, like this:

Springfield XDM

That’s one of the 42 contemporary designs I’ve done.  I’ve also done a bunch of historical firearms, such as the 1851 Colt Navy Revolver:

Colt Navy Revolver

And even favorites from various Science Fiction franchises …

Farscape Pulse Pistol

The whole thing can be found here:  Art of the Gun and I invite you to stop in, check it out, see the many different designs I’ve come up with so far.  I’ve just launched the site, but already it is starting to get some positive feedback — so maybe you’ll find something you like there as well.

One last thing: we’re not done with the BBTI project. Something else we did this past weekend was to start talking about future projects related to our ongoing research. It’s too early to say too much, but rest assured that we have more work yet to do, more data yet to gather and share.

Thanks for coming by, and for your ongoing support.

Jim Downey

 

August 21, 2019 Posted by | .45 Colt | , , , , , , , , , , , , , , , , , , , | 2 Comments