A-5 Velocity Concern

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   When I was getting chrono'd I kept going over 280 fps from 290 -300 +.  I tried adjusting it with the velocity screw but I was still shooting "high" and very inconsistent as if it didnt have an effect.  This issue only started after I replaced the rear bolt/insert plug, tombstone, and sear.
My marker's mods are a replaced newer style rear bolt/insert plug, tombstone, and sear, shocktech front bolt, 16" j&j ceramic fluted barrel, 45ci 3000psi fiber wrapped Pure Energy tank, shocktech gas through grip w/ bottom line into a lapco drop fwd.

If someone can point me in the right direction that'd be great. thanx

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Prep6969 Members Profile Send Private Message Find Members Posts Add to Buddy List Member Joined: 02 November 2008 Location: Chicago Status: Offline Points: 2	Post Options Post Reply Quote Prep6969 Report Post Thanks(0) Quote Reply Topic: A-5 Velocity Concern Posted: 21 August 2009 at 1:56am
	When I was getting chrono'd I kept going over 280 fps from 290 -300 +. I tried adjusting it with the velocity screw but I was still shooting "high" and very inconsistent as if it didnt have an effect. This issue only started after I replaced the rear bolt/insert plug, tombstone, and sear. My marker's mods are a replaced newer style rear bolt/insert plug, tombstone, and sear, shocktech front bolt, 16" j&j ceramic fluted barrel, 45ci 3000psi fiber wrapped Pure Energy tank, shocktech gas through grip w/ bottom line into a lapco drop fwd. If someone can point me in the right direction that'd be great. thanx

TinMan Members Profile Send Private Message Find Members Posts Add to Buddy List Gold Member Joined: 10 October 2007 Status: Offline Points: 1003	Post Options Post Reply Quote TinMan Report Post Thanks(0) Quote Reply Posted: 21 August 2009 at 5:59am
	Your gas through grip is supplying extra air to the valve. It acts like a storage area, or chamber. Best bet is a spring kit IMO