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Air Gun Home Forum Index » General Air Gun Questions and Topics » where to start moding a crosman ratcatcher    View previous topic :: View next topic  where to start moding a crosman ratcatcher   Posted: Thu May 13, 2010 2:58 pm snake-doc New Member Joined: 05 May 2010 Posts: 3 hi im new to co2 guns and i have my eye on a crosman ratcatcher i know i want to do some mods to it ie: breech block and bolt is there any other suggestions where to start thanks but over in england we have 12ft,lb limit silly really cos you can buy a 200 lb draw string crossbow any help and advice you can give will be most welcome thanks   Posted: Thu May 13, 2010 3:48 pm Jaxom Senior Member Joined: 06 Aug 2008 Posts: 927 Don't want ya to break any laws. Have ya thought about rigging that crossbow string??? _________________ .22 2300kt Crosman Custom   Posted: Thu May 13, 2010 4:04 pm rsterne Moderator Joined: 15 Jan 2008 Posts: 2998 Location: Coalmont, BC So to be safe you are looking at about 600 fps with 14.3 gr pellets (11.4 FPE).... On CO2, that won't be too difficult depending on barrel length.... A Crosman 2260 is about 570-580 fps at 70*F and they are basically the same parts.... The 2260 has a 24" barrel, I don't know about the "ratcatcher".... A 2240 with an 8" barrel is only about 460 fps and a 2250 with an 18" barrel is about 550 fps.... so you can see the trend.... What are your plans for barrel length, etc?.... Bob _________________ Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! Airsonal: Too many to count!   Posted: Fri May 14, 2010 5:30 am packrat Senior Member Joined: 16 Nov 2009 Posts: 882 Location: Out in the woods...Ellabell, GA. Maybe this will help..I have a 2240 , I changed it to a 10" barrel, and installed a B&A BOSS valve, and power adjuster..with the 14.3 Crosman pellets I get ~550fps..indoors at 70 degrees... I'm thinking a 14" barrel would put it right at the 600fps limit mentioned...HTH _________________ HEY !! This getting old thing is NOT for sissies...   Posted: Fri May 14, 2010 9:05 am snake-doc New Member Joined: 05 May 2010 Posts: 3 great thanks for the tips i was thinking about a 22" barrel with a hogan sound mod would that be adviseable?   Posted: Fri May 14, 2010 9:41 am rsterne Moderator Joined: 15 Jan 2008 Posts: 2998 Location: Coalmont, BC The Boss Valve mentioned is a gas-hog.... the number of shots per cartridge drops from 35-40 to about 17-20.... With a 22" barrel, it would probably put you over the 12 FPE limit.... I would start with just the barrel change and go from there.... Probably some mild porting work on the valve is all you will need (if anything).... Bob _________________ Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! Airsonal: Too many to count!   Posted: Fri May 14, 2010 12:01 pm packrat Senior Member Joined: 16 Nov 2009 Posts: 882 Location: Out in the woods...Ellabell, GA. If you can get 600 fps, and use 14.3 gr. pellets you'd have 11.4fpe I changed it to a 10" barrel, and installed a B&A BOSS valve, and power adjuster..with the 14.3 Crosman pellets I get ~550fps..indoors at 70 degrees... I'm thinking a 14" barrel would put it right at the 600fps limit mentioned...HTH Using 14.3gr pellets, I get 27 shots with average velocity of 528.24fps (highest of 547) with PA turned ALL the way in...that's my reasoning for thinking that the 14" barrel would be just about right......you could start with a longer barrel, then shorten it say 1 " at a time, as necessary to get fpe under legal limit _________________ HEY !! This getting old thing is NOT for sissies... where to start moding a crosman ratcatcher     Air Gun Home Forum Index » General Air Gun Questions and Topics 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 vote in polls in this forum All times are GMT - 5 Hours   Page 1 of 1   All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Select a forum Main Forums----------------AirGunHome Q&AGeneral Air Gun Questions and TopicsPicture GalleryTarget Shooting: Casual, Fun and CompetitionHunting, Pest Control, Varminting People/Events/Airgun Issue Discussion----------------Introduce YourselfThe BS TopicClubs/Events/Regional/Political Airgun Issues Maintenance, Modification and Reviews----------------RiflesPistolsAntique, Collector and Novelty AirgunsBB GunsPellets/AmmoOpticsAccessoriesAirgun Smithing Buy, Sell or Trade Forums----------------For SaleWant to Buy   Note: If you are seeing "Please enter your username and password to log in." Your browser cookies have been reset or you need to register to access the topic in question. Use the 'Register' button near the top left of this page. Click Here for AirGunHome.com Main Page Powered by phpBB © 2001-2004 phpBB Group Partial Styling Supplied by Vjacheslav Trushkin Themes Database.