What pistol did you shoot today

An Intriguing little beast...

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A couple of years ago I had the opportunity to buy a C02 pistol which I knew next to nothing about. I got a really good deal because although the gun came in it's original box and looked to be in decent shape, it was completely disassembled. The gun is a Schimel GP-22. Since then I've learned a lot. I was surprised to discover all the parts were there, and the seals, which can be difficult to find, were in pretty good shape.

After a thorough cleaning and lube I reassembled the gun using the original seals. It's .22 cal and uses the short 8 gram C02 cartridges. Hit the reset button and pull back on the rear of the receiver to cock the action. Pulling open the toggle exposes the breech to load a pellet. Test fired it this morning, and surprisingly, it works.

I got 20 rounds off before pressure started to drop. It's noisy. Muzzle velocity is supposed to be somewhere around 600fps. Gotta drag out my chrono and see if the claim is true. It definitely hits hard. Trigger is pleasant, breaking at around 4lbs. It approximates the weight and balance of the Luger P08 pretty well. Given the low serial number I'm thinking it was manufactured in 1948. Regardless, it's easily the oldest airgun in my collection. Just a fun bit of airgun history.

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Weight, balance, and overall proportions are pretty close to the real P08.

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Amazing condition Schimel you have there....maybe the best one left in the world. The now defunct 8 gram bulbs ran at a higher pressure than the 12 gram bulbs, making the Schimel very powerful albeit lower shot counts and noisey.
Schimels are awesome! Loud and powerful, more like a .22 short than an airgun. Just plain cool!
Some parts (seals, grips) are still available. I can no longer find the metal parts and must replicate them out of steel as needed. The cup seals (2 per gun) are still available but only one of the cups moves (during loading), while the other remains stationary with the barrel. I've replaced both with similar seals from McMaster (with a bit of trimming) and they work, but in future I'll use the legit spare Schimel seal for the sliding seal ..... it's a tad more flexible and slides more easily.
 
Schimels are awesome! Loud and powerful, more like a .22 short than an airgun. Just plain cool!
Some parts (seals, grips) are still available. I can no longer find the metal parts and must replicate them out of steel as needed. The cup seals (2 per gun) are still available but only one of the cups moves (during loading), while the other remains stationary with the barrel. I've replaced both with similar seals from McMaster (with a bit of trimming) and they work, but in future I'll use the legit spare Schimel seal for the sliding seal ..... it's a tad more flexible and slides more easily.
Yeah, I was surprised the first time I test fired it after re-assembly. Noisy sucker! From what I've read, the cast metal components are pretty delicate and replacements are not available. Like you, if and when something breaks, I'll be making a steel duplicate replacement part. It sure is a neat gun, and it's the oldest in my collection.
 
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Nice work, how do you find the Holosun.
Did you follow my lead on the Piccy rail placement on the breech housing, or parallel development of your own...
Either way nice work.

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Thanks Steveoo, the Holosun projects a very round dot and holds adjustment well. I missed your write-up in the rail. Mine is a slightly modified Magpul rail so that I could use the 4.5mm threads, the screws for which are rather rare in the US.
 
Nice one. I knew someone somewhere would have beaten me to the idea, or did at a similar time frame.
I had a similar problem with threads, the Walthers being perfect 40mm centres for standard 2" rail but the threads in the Walthers breech block are 4mm fine. Such screws pretty much unobtanium, so I ran a fine thread metric die down standard 4mm cap heads.
The next option is a mounting plate typically used with Glock and similar guns which could then mount the red dot lower on the gun.....but I've discovered a snag with mini Reflex red dots which I may start another topic on...
 
I recently went down the rabbit hole with airguns...

Shot three today in my new basement 21ft range, 2 for the first time.

First up was my 1377 custom carbine that Baker built for me that I've been slowly upgrading. It's the gun that got me hooked.

Second was a crosman 150 (type 2 I think) that was given to me and freshly resealed and tuned by Baker. Just a 5 round test fire.

Third was a Baikal IZH 46 that I bought from a friend in 2010 who needed cash. It was unfired, and came with a second pair of un-modified factory grips, spare seals and other spare parts and all the original paperwork. It sat in my safe until today when I put 5 rds of Wal-mart bulk crosman hps thru it to test the seals. It is scary accurate and probably way to much gun for me at this point.
 
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Finally no rain and had time to sight the Huben GK1 .25 at 25 yards. Shot 650 rounds of JSB pellets with no jams or issues at all. After a little adjustments the green dot was sighted in. The shots outside of the black were during the first 3 rounds to sight in the green dot sight.

Once sighted in we never shot another pellet outside of the black!. It was easy to hit the targets even shooting fairly rapid fire about 17 shots in less than 10 seconds and no shots outside of the black. There are about 6 layers of adhesive 4" targets on top each other as well as 6 layers of the larger target stapled on top of each other as we only had the one free large target given on the entrance to the range. The GK1 is a blast to shoot. I know these groupings are nothing compared to the many GK1 owners whom have shot theirs in the many of thousands of rounds but hopefully I will get on par with some of you seasoned shooters of the GK1! It was funny to see all of the powder burners in the entire 25 yards section not even remotely getting groups close to what we did with the GK1; almost laughable on the accuracy.

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Who needs a Huben...

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Found that it works well with Excite Plinking, got around 40 shots from one capsule.

Happy days. 😁
I do love the 600. However, that cam ring setup could use an update. I’m thinking of a linear ball bearing setup to replace the sliding arrangement it was built with. Another project for a rainy day