New Design CGW Barrel Bushing

[pnwkiwi]

Finally got around to fitting a 10x bushing to my SP-01.  Used the freezer method and the bushing went in easily with a few taps of a plastic faced mallet.  Barrel drops in with minimal manipulation.  The only hitch was that I had to re-drill the front sight slot.  The bushing mated flush to the front face of the frame but the slot on the bushing was only half exposed in the frame slot.  Anyone else encounter this issue?  May be I just have a slightly out-of-spec frame ... (it is clean/tight in all other regards).

Cheers,

Marcus

[rhart]

Finally got around to fitting a 10x bushing to my SP-01.  Used the freezer method and the bushing went in easily with a few taps of a plastic faced mallet.  Barrel drops in with minimal manipulation.  The only hitch was that I had to re-drill the front sight slot.  The bushing mated flush to the front face of the frame but the slot on the bushing was only half exposed in the frame slot.  Anyone else encounter this issue?  May be I just have a slightly out-of-spec frame ... (it is clean/tight in all other regards).

Cheers,

Marcus

Trying to not sound like a dick here, but are you sure the bushing is aligned correctly?

[pnwkiwi]

Yep, checked it 3 times before tapping it home.  Slot was even when viewed from both sides and the top of the frame.  There was just not quite enough room to take a roll pin.  Everything seems solid so I will call it good.  Was just curious to see if anyone else had experienced the same issue ...

Edit:  Schmecky does say that "minor fitting may be required" and running a 2mm drill bit though the roll pin hole counts as minor in my book.

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[pnwkiwi]

Good to know - thanks SP01Shadow


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[Siliconian]

I have installed 10 of them so far. 4 of the 10 had to be drilled to get the front sight roll pin through so this is not unusual. I really don't think there are 2 front sight dove tails I have found to be exactly alike. Some of the front sights will slide right in with no fitting and others take quite a bit of filing to get them to even start, the same can be said for the cross pin hole placements.

10 of them! I guess that's for all of your CZs.


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[Tok36]

I only gots one bushing. Now its feeling all lonely. 

[Boris_LA]

I have installed 10 of them so far. 4 of the 10 had to be drilled to get the front sight roll pin through so this is not unusual. I really don't think there are 2 front sight dove tails I have found to be exactly alike. Some of the front sights will slide right in with no fitting and others take quite a bit of filing to get them to even start, the same can be said for the cross pin hole placements.

I have installed 3 of them. Two front sight pins went in easy. One i had to tap hard. I didn't had to drill hole out, but pin is "pinned" (pun intended) now and will have to be replaced if taken off next time.

[Skillshot]

I installed one in an SP-01 and accuracy got worse. It's strange, because I can feel that the barrel has less wiggle than before, but my groups went from 2.25" to 6". There is also the following behavior: After loading the gun, the first round is in the bullseye, and the second and following rounds are 5" higher. This effect is consistent and I've observed it a dozen times. 

[Scarlett Pistol]

CGW will take care of you for sure! Very interesting results though... Please do share if you and CGW can figure out what is causing this to happen.

In my limited experience with the mechanics of these pistols it almost seems like something is preventing it from locking forward all the way - so the barrel is ever so slightly angled upwards. I could be totally off though.

[Boris_LA]

Do you release slide with lever or slingshot method?

[Tok36]

^^Was there a point of impact shift on any of your CZs that got the 10X? Hopefully the answer is not already buried in this thread. 

[Tok36]

I had 1 out of the 10 that had an impact shift that was noticeable. I have sent that bushing back for evaluation to find out if it is the bushing or something to do with the gun. Even though the impact shifted the gun would still shoot a ragged hole, just not where it was previously sighted. The improvement in accuracy was there but the shift on POA was enough that I had a concern. There was no resistance on the part of CGW to help in finding the problem. I am waiting to find out if the bushing was at fault or that maybe the gun is out of tolerance and the factory bushing was fitted to compensate for it. I sent it back because I know that David has the equipment and the process to find the problem quickly. If he tells me the bushing is concentric I know to start looking at the gun for the issue.

Interesting, i have been reading the BE 10X thread and POI shifts after bushing installs have popped up a few times. A few people mentioned adjusting their sights. I was getting the idea from that thread that POI shifts were part of the deal when installed in some pistols and adjusting the pistols sights to compensate was standard. Maybe POI shifts are less common than i though they were and it represents something.

Here is the thread i am talking about.
http://www.brianenos.com/forums/index.php?showtopic=228351&page=1

[Tok36]

A valid point about Enos. Ill be interested to see how things progress. So far i would agree that from what i have seen very few issues have popped up given the tolerances at play.

[coolbox]

3" left at 25mtrs in my CTS. And probable 1.5" high. I have adjustable sights, so no biggie. Groups are tight in general. Will post comparison when I am back to shooting at my best levels (am a bit below par since last 3 weeks).

[Joe L]

I am surprised that there would be any concern about the POI moving with a bushing change.  Perhaps my factory bushing was a little worse than most, but I fully expected the POI to move when I put a tight bushing in the gun.  If I could predict exactly where the gun was going to hit in the first place, before the bushing change, I wouldn't have benefitted much from the bushing. 

I would have assumed just the opposite--no change in the POI with the new bushing, the factory bushing wasn't that bad to begin with.  My factory bushing was the culprit, not the 10X. 

Joe