Valve mod - pcp pistol - Kiwi Airgunners Forum

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kruzaroad

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Posted: 10 Oct 2025 at 6:47am

A stock is going to give you a a better performance evaluation of the gun just on stability alone.
Do preformance with a stock for evaluation of gun then put back to pistol and test.
Is the dove tail removable?

Pauly5

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Posted: 10 Oct 2025 at 7:32am

yes. ive mounted the red dot directly. i made the dove tail plate, but didnt use it.

nunga

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Posted: 28 Mar 2026 at 6:56pm

I know this is an old post now but what pressure did you have it fulled up to for those last numbers?

2nd place HP springer - WFTF World Championships 2014

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Posted: 29 Mar 2026 at 8:05am

It would have been around 1800 - 2000 psi

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Posted: 12 hours 41 minutes ago at 12:19am

After being inspired by the latest posts from other members of their builds I started finishing off my 25 cal pistol build.

The gun fires, but has no way to mount a sight or scope. I have a small red dot for it, but needed to make a mounting plate for it as I cocked up the one that came with it by getting complacent with my accuracy when drilling holes.

At first I milled a shallow channel in the aluminium plate then hand filed the angle. This was ok but substandard, so I used a countersink bit to create the angle. This worked really well, so I will redo the part again.

I was really pleased with the fit.

Next thing will be to drill and countersink the 2 holes to fix to the breech block.

kruzaroad

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Posted: 2 hours 27 minutes ago at 10:33am

Looking good pauly. Just wondering if your going to make a separate plate for mounting plate would it be worth making the center narrower at the width of a scope mount, then angle grinding at the bottom of said recess so a dovetail scope mount can be used. Same for front except probably could be just scope mount width.
Maybe place for ghost ring at back, assuming you can put a post of some sort on barrel.
Should put up your work to air valve on crosman you recently did.
Being that looks like a 13xx trigger platform, are you going to alter the trigger sears?
Ive been toying with the idea of (but haven't done yet) of taking a mm off the face of the sear that ingauges the hammer, creating a step where the last mm or two of travel has a slight click into place as the hammer "drops" into place for the final part of travel. Sort of a hair trigger set for what is otherwise a reasonably unfeeling trigger system.

Edited by kruzaroad - 2 hours 4 minutes ago at 10:56am

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
kruzaroad Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 03 Jul 2022 Location: Hastings 4 now Status: Online Posts: 3030	Post Options Post Reply Quote kruzaroad Report Post Thanks(0) Quote Reply Posted: 10 Oct 2025 at 6:47am
	A stock is going to give you a a better performance evaluation of the gun just on stability alone. Do preformance with a stock for evaluation of gun then put back to pistol and test. Is the dove tail removable?

Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Offline Posts: 1755	Post Options Post Reply Quote Pauly5 Report Post Thanks(0) Quote Reply Posted: 10 Oct 2025 at 7:32am
	yes. ive mounted the red dot directly. i made the dove tail plate, but didnt use it.

nunga Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Joined: 09 Mar 2013 Location: Pukekohe Status: Offline Posts: 1127	Post Options Post Reply Quote nunga Report Post Thanks(0) Quote Reply Posted: 28 Mar 2026 at 6:56pm
	I know this is an old post now but what pressure did you have it fulled up to for those last numbers?
	2nd place HP springer - WFTF World Championships 2014

Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Offline Posts: 1755	Post Options Post Reply Quote Pauly5 Report Post Thanks(0) Quote Reply Posted: 29 Mar 2026 at 8:05am
	It would have been around 1800 - 2000 psi

Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Offline Posts: 1755	Post Options Post Reply Quote Pauly5 Report Post Thanks(0) Quote Reply Posted: 12 hours 41 minutes ago at 12:19am
	After being inspired by the latest posts from other members of their builds I started finishing off my 25 cal pistol build. The gun fires, but has no way to mount a sight or scope. I have a small red dot for it, but needed to make a mounting plate for it as I cocked up the one that came with it by getting complacent with my accuracy when drilling holes. At first I milled a shallow channel in the aluminium plate then hand filed the angle. This was ok but substandard, so I used a countersink bit to create the angle. This worked really well, so I will redo the part again. I was really pleased with the fit. Next thing will be to drill and countersink the 2 holes to fix to the breech block.

kruzaroad Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 03 Jul 2022 Location: Hastings 4 now Status: Online Posts: 3030	Post Options Post Reply Quote kruzaroad Report Post Thanks(0) Quote Reply Posted: 2 hours 27 minutes ago at 10:33am
	Looking good pauly. Just wondering if your going to make a separate plate for mounting plate would it be worth making the center narrower at the width of a scope mount, then angle grinding at the bottom of said recess so a dovetail scope mount can be used. Same for front except probably could be just scope mount width. Maybe place for ghost ring at back, assuming you can put a post of some sort on barrel. Should put up your work to air valve on crosman you recently did. Being that looks like a 13xx trigger platform, are you going to alter the trigger sears? Ive been toying with the idea of (but haven't done yet) of taking a mm off the face of the sear that ingauges the hammer, creating a step where the last mm or two of travel has a slight click into place as the hammer "drops" into place for the final part of travel. Sort of a hair trigger set for what is otherwise a reasonably unfeeling trigger system. Edited by kruzaroad - 2 hours 4 minutes ago at 10:56am