Canadian Airgun Forum

The #1 Community for Airguns in Canada!
It is currently Wed Nov 20, 2019 6:25 am

All times are UTC - 5 hours


The Canadian Airgun Forums are a place for people to discuss and learn about airguns and the airgunning sport in Canada. There are lots of discussions about airguns, airgun accessories, reviews, modification and repair information, airgun events, field target and free classifieds!

 

You need to register before you can post: click the register link to proceed. Before you register, please read the forum rules. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload your own pictures, and access many other special features. Registration is fast, simple, and absolutely free! To start viewing messages, select the forum that you want to visit from the selection below.








Post new topic Reply to topic  [ 1 post ] 
Author Message
PostPosted: Sat Mar 08, 2014 10:47 pm 
Offline

Joined: Fri Aug 09, 2013 2:52 pm
Posts: 18
I did some measurements today on the Crosman 2240 air guns that I have. Temperature was 10 celsius. I was using Air Arms 16 gram diabolo field pellets. 12 g standard Crosman powerlets. an Alpha chrony was used for velocity measurements.

14 inch barrel RVA 1/8 inch out, steel breech, standard probe, standard tp and valve, p-rod trigger (and therefore a heavier hammer)
Most shots between 420-422 - fps not much variation in velocity with the RVA screwed fully in or fully retracted.

18 inch barrel with modified valve, extended probe, steel breech, drilled transfer port, 2250 kit, p-rod modification.
Velocities around 495-500.

10.1 inch barrel RVA with standard valve, standard probe, steel breech, standard transfer port, standard trigger.
384-390 fps. velocity adjuster didn't make much difference.

By comparison the 1701P shooting 7.56 H&N match pistol (177) had a velocity of 476 fps.

I'll do other measurements once it warms up.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
News News Site map Site map SitemapIndex SitemapIndex RSS Feed RSS Feed Channel list Channel list

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group

phpBB SEO