Oh, another question - It was suggested to go to maybe 3/16" for the valve and barrel ports. Tim Hill said that he was concerned that going bigger than .16" on a stock valve might "chance a bent valve seat from the constant high pressure". Has anyone who has gone this big ever had a problem with it?
I will add that I have been running the JSAR valve regulated with great success, but I am doing so in a "power tune" configuration in a .25 cal Gen I Marauder. I am running it regulated at 2100 psi using a lightweight hammer and an original TSS with 0.190" ports. It is launching 34 grain JSBs at ~52 FPE, and is doing so at an efficiency level of 1.53 FPE/CI. I am very happy with the overall performance of this set up - very powerful, accurate, quiet, and with reasonable cocking efforts.My gun gives me 24 shots at this level off a 3000 psi fill, but I am using a lightweight air tube with an extra 3 inches of length . . . .
Quote from: AlanMcD on July 12, 2018, 03:12:57 PMI will add that I have been running the JSAR valve regulated with great success, but I am doing so in a "power tune" configuration in a .25 cal Gen I Marauder. I am running it regulated at 2100 psi using a lightweight hammer and an original TSS with 0.190" ports. It is launching 34 grain JSBs at ~52 FPE, and is doing so at an efficiency level of 1.53 FPE/CI. I am very happy with the overall performance of this set up - very powerful, accurate, quiet, and with reasonable cocking efforts.My gun gives me 24 shots at this level off a 3000 psi fill, but I am using a lightweight air tube with an extra 3 inches of length . . . .If you don't mind saying, where'd you get the longer lightweight tube?
Quote from: GoneShootn on July 12, 2018, 04:09:29 PMQuote from: AlanMcD on July 12, 2018, 03:12:57 PMI will add that I have been running the JSAR valve regulated with great success, but I am doing so in a "power tune" configuration in a .25 cal Gen I Marauder. I am running it regulated at 2100 psi using a lightweight hammer and an original TSS with 0.190" ports. It is launching 34 grain JSBs at ~52 FPE, and is doing so at an efficiency level of 1.53 FPE/CI. I am very happy with the overall performance of this set up - very powerful, accurate, quiet, and with reasonable cocking efforts.My gun gives me 24 shots at this level off a 3000 psi fill, but I am using a lightweight air tube with an extra 3 inches of length . . . .If you don't mind saying, where'd you get the longer lightweight tube?Jefferson State Air rifles sells them
Quote from: Motorhead on July 12, 2018, 04:59:47 PMQuote from: GoneShootn on July 12, 2018, 04:09:29 PMQuote from: AlanMcD on July 12, 2018, 03:12:57 PMI will add that I have been running the JSAR valve regulated with great success, but I am doing so in a "power tune" configuration in a .25 cal Gen I Marauder. I am running it regulated at 2100 psi using a lightweight hammer and an original TSS with 0.190" ports. It is launching 34 grain JSBs at ~52 FPE, and is doing so at an efficiency level of 1.53 FPE/CI. I am very happy with the overall performance of this set up - very powerful, accurate, quiet, and with reasonable cocking efforts.My gun gives me 24 shots at this level off a 3000 psi fill, but I am using a lightweight air tube with an extra 3 inches of length . . . .If you don't mind saying, where'd you get the longer lightweight tube?Jefferson State Air rifles sells themI had only looked at the one with the gauge port, and, apparently, you have to get one w/o the port in order to specify a custom length. I can't imagine doing without the gauge, so I guess it's not an option for me. Thanks.
Jere, just make sure and plan on picking up the synthetic, MDS hammer from JSA, also, as you do not want to run your factory steel hammer against an aluminum tube. Hopefully you’ll get perfect timing, and JSA will have that new no bounce synthetic hammer in stock, when you do order their tube. That little invention right there, is a game changer.
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