Kiwi Airgunners Forum : .25 CO2 beast www.kiwiairgunners.co.nz/ This is an XML content feed of; Kiwi Airgunners Forum : Pauly's Technical Area : .25 CO2 beast Copyright (c) 2006-2012 Web Wiz Forums - All Rights Reserved. Tue, 09 Jun 2026 04:07:16 +0000 Fri, 29 May 2026 22:07:48 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 10.14 360 www.kiwiairgunners.co.nz/RSS_post_feed.asp?TID=1341 Kiwi Airgunners Forum www.kiwiairgunners.co.nz/forum_images/logo.jpg www.kiwiairgunners.co.nz/ .25 CO2 beast : I love seeing custom builds. Following... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14483#14483 Author: BC_Clark
Subject: 1341
Posted: 29 May 2026 at 10:07pm

I love seeing custom builds. Following this build with interest.

CO2 is well capable of 30 ft-lbs in .25 and it may use less gas than expected.
e.g. I got 26 ft-lbs in .35 from a 6" barrel and it used 1.1 grams per shot.

]]> Fri, 29 May 2026 22:07:48 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14483#14483 .25 CO2 beast : Plenty for a evenings hunting.... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14445#14445 Author: kruzaroad
Subject: 1341
Posted: 25 May 2026 at 9:52pm

Plenty for a evenings hunting. Goat/wallaby hunting at that. ]]> Mon, 25 May 2026 21:52:29 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14445#14445 .25 CO2 beast : -Ec wrote:30FPE - that'll... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14443#14443 Author: nunga
Subject: 1341
Posted: 25 May 2026 at 8:44pm

Originally posted by -Ec -Ec wrote:

30FPE - that'll hit HARD.  Any guestimate on how many shots you might get from a soda stream bottle?



To get 30FPE it will take approximately 2.2 grams of CO2 per shot with the 120cc tank i will have screwed to the Sodastream bottle, so the math says 182 of usable shots. So i can safely say 150 shots per tank.


Edited by nunga - 25 May 2026 at 8:46pm]]> Mon, 25 May 2026 20:44:05 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14443#14443 .25 CO2 beast : Next step is to make the 120cc... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14442#14442 Author: nunga
Subject: 1341
Posted: 25 May 2026 at 7:36pm

Next step is to make the 120cc tank, Hammer and ports

on a hot summers day 30.0 °C it would push it up to around 1200
]]> Mon, 25 May 2026 19:36:23 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14442#14442 .25 CO2 beast : What sort of pressure increase... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14441#14441 Author: kruzaroad
Subject: 1341
Posted: 25 May 2026 at 7:14pm

What sort of pressure increase would say a 20° day give it.
Pish it to a 950psi? How consistent are you expecting the refills to be? I'm guessing that they should be pretty well pressure regulated at refill place.
Whats the next step?]]> Mon, 25 May 2026 19:14:07 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14441#14441 .25 CO2 beast : That's looking great Nunga.... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14440#14440 Author: Pauly5
Subject: 1341
Posted: 25 May 2026 at 6:44pm

That's looking great Nunga. I can't believe I had missed the earlier posts.

I was thinking of doing a CO2 bulk fill carbine with a 30 cal barrel I have, so I will enjoy watching this.
]]> Mon, 25 May 2026 18:44:56 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14440#14440 .25 CO2 beast : 14.00 ... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14439#14439 Author: nunga
Subject: 1341
Posted: 25 May 2026 at 5:38pm

So I solved the thread problem. I made a homemade die nutto clean up the threads.

 

I had to use another pressure gauge because the nice newone had a nipple on the bottom which got in the way of the shaft so I installedmy old flat bottom gauge.

 

900 PSI is more than expected and it is winter as wellwith 19 degrees so that’s good pressure.





So now i can move on with the build since the tests have proven very successful.



]]> Mon, 25 May 2026 17:38:57 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14439#14439 .25 CO2 beast : Cut one on the lathe. If your... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14431#14431 Author: kruzaroad
Subject: 1341
Posted: 23 May 2026 at 10:08pm

Cut one on the lathe. If your just tiding up thread basically a harden nut would do the job.


Edited by kruzaroad - 23 May 2026 at 10:09pm]]> Sat, 23 May 2026 22:08:46 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14431#14431 .25 CO2 beast : Yeah thats probably the best option.... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14428#14428 Author: nunga
Subject: 1341
Posted: 23 May 2026 at 9:58pm

Yeah thats probably the best option. For now ill just try to find a full bottle to test that has a good thread. If it all works out ill look at what a die is worth
]]> Sat, 23 May 2026 21:58:16 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14428#14428 .25 CO2 beast : Other option might be to get a... www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14427#14427 Author: kruzaroad
Subject: 1341
Posted: 23 May 2026 at 9:31pm

Other option might be to get a die and just tidy up threads on the bottles that don't fit when you get them. Assuming they must be pretty close. Would still work in a soda stream when connected and wouldn't be noticed when swapping bottles]]> Sat, 23 May 2026 21:31:03 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=1341&PID=14427#14427