Reminton 77 / 2100 pumptube and assembly

[IronHand]

I think that I have read about converting these parts to 13frame for power increases. Any information would be appreciated. Plan on a 25cal build possibly. Also recs on best valve for build.  Iron Hand

[K.O.]

https://www.google.com/search?sourceid=navclient&ie=UTF-8&rlz=1T4ADFA_enUS508US508&q=1325XLT

I feel you would be better off using an MK177 pump assembly even just stock More valve volume than I could get even with an extended valve in the 2100... the 2100 with max effort I got about .12 ci of valve volume...  the Mk177 stock is about .17ci... if you can make or have made a 1" extension for the MK valve well then you can get about .37 ci which the .25 needs to do well

http://www.gatewaytoairguns.org/GTA/index.php?topic=71683.0


they have close to the same pump swept volume in fact the MK beats the 2100 by a smidge...

with a Valve of about .24 ci I am at 805 fps with 14.3g CPHP that would get me about 700-725 fps with the 20g .25 H&N...

that is at 22 pumps, so with a real big valve then it is a matter of how much are you willing to pump to get max fpe if you do not feel like pumping a lot well then you could just take up some space in the valve...

http://www.gatewaytoairguns.org/GTA/index.php?topic=78749.20



Best is a custom tube (Disco) and a 392 steroid linkage...