Grand Power now at SFRC

happiness is a warm gun said:
The k22 xtrim tester l had was fussy on ammo. It only like the high speed stuff. I am guessing that the springs were to heavy.

The one l bought has had no ammo issues at all, but accuracy is better with the faster rounds it seems. Still testing every brand of ammo that l can find to see what groups best. I am very happy with the gun. Nice light trigger and very accurate
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Try some 40gr Blazer if you can find it. I've found that and Winchester M22's work great. Federal 510 and Federal Automatch took a little tuning, but work great now also.
 
Tuning as in how? I've stayed with the 40gr CCI MiniMags as they run just fine. As I mentioned mine didn't like the 36gr MMs. I tried removing the smaller inner recoil spring but that didn't seem to make much difference so I put it back in. I will start trying other ammo as sometimes the 40gr MMs can be hard to find locally. Now that I'm past the 1200 round break-in, I will start experimenting too.

I also saw on the FB group that canuck223 isn't a fan of Frog Lube. After about 700 rounds of Frog Lube I started to cake and bind. I took it down last night and went back to Hoppes/MPro7. It's breaking in really nice with some very even wear patterns. I'll try some 36gr again this weekend.
 
pewpew62 said:
Tuning as in how? I've stayed with the 40gr CCI MiniMags as they run just fine. As I mentioned mine didn't like the 36gr MMs. I tried removing the smaller inner recoil spring but that didn't seem to make much difference so I put it back in. I will start trying other ammo as sometimes the 40gr MMs can be hard to find locally. Now that I'm past the 1200 round break-in, I will start experimenting too.

I also saw on the FB group that canuck223 isn't a fan of Frog Lube. After about 700 rounds of Frog Lube I started to cake and bind. I took it down last night and went back to Hoppes/MPro7. It's breaking in really nice with some very even wear patterns. I'll try some 36gr again this weekend.
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My K22 Xtrim was a first generation X-Trim from Dlask, and worked great out of the box with 40gr Minimags and 40gr Blazer ammo. I wanted to make it work with a wider variety of ammo, so I progressed through a bunch of tinkering & tuning.

The slide was heavier that the current generation one. So I had some additional cutouts machined in to further lighten the slide and bring it closer to the weight of the new generation slide.

I did some polishing to the slide contact points to accelerate the break-in. Another area to polish was the hammer and increasing the radius of the corner of the slide that resets the hammer. That's something I picked up tuning my 10/22's.

The K22 mags from Dlask needed a bit of tuning too. The follower sometimes needed trimming to move freely up and down the mag, and the mag spring was very strong, so trimming 2-3 coils off helped reduced the pressure from the round pressing up against the spent round as the slide recoiled.

I did also reprofile the extractor. That probably was not necessary, but again that's something I'm just used to doing when I tune up my 10/22's & Ruger 22/45's.

I'm able to run a fairly wide selection of 40gr ammo now (except Winchestor Wildcats), but lighter 36gr/38gr ammo still results in the odd FTE. So I just save that stuff for my other .22 hand guns.
 
glin said:
just bought a X-Calibur with 10% off and will try it for IPSC production
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Post pictures of your targets! Like this:

Swiss Arms 1911 rimfire on the left, K22X on the right.



40gr CCI Minimags @ 30 feet (10 yards).

Here's the rentals, again at 10 yards. K100 on the left and CZ Shadow on the right. Please be kind, again, both were rentals and I'm a lefty.

 
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