My .25 shot string feedback anyone??

2500 psi fill
Powerwheel setting 6
.079 Tophat
90 gram hammer
.25 Kodiak 30.70 g

FPS
989.8 (Shot 1)
1004
980.9
1000
997.9 (Shot 5)
995.3
997.6
989.8
979.2
984.1 (Shot 10)
979.7
972.2
948.5
947.0
942.5 (Shot 15)
958.2
932.7
929.5
925.6
948.0 (Shot 20)
923.6
918.2
936.7
929.3
923.2 (Shot 25)
922.9
921.9
908.4
889.7
904.4 (Shot 30)
881.5
895.7

Thanks
Randy

General Chat

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Viewing 5 replies - 1 through 5 (of 5 total)

randyhub

Participant

March 31, 2009 at 12:27 pm

Thanks guys, it is a 24″ Polygonal LW barrel.

I will do another string and check the pressure I think it was around 1900 psi but will check again as the wife hates me testing downstairs with my Condor. 😕

Randy

knifemaker

Participant

March 31, 2009 at 8:24 am

Randy, is that a 24″ bbl.?

I’ve been thinking about going to a 21″ .25.

Mike

riffraff

Participant

March 31, 2009 at 7:13 am

Hi Randy.

Like I said on the yellow, your gun seems to be a mirror of mine performance-wise.

I start at around 2900PSI, and vel starts at 990 and will hold within 5-20fps for 17 shots. Shot 18 will almost everytime be in the 965-970 range. Its a slow drop down to 900 from there, somewhere around shot 35.

I like to fill at shot 20 though unless I forgot the fill tank like I did this weekend.

TH @ .70-.75 depending on what side stack of feelers I wedge in there.
PW @ 10/10 but I redrilled the screw hole in the PW, the first hole stripped out.
70 gram hammer with a “assist” spring I found at ACE. It was in a mislabeled container so I dont know a part#. This spring fits inside my original spring (slides easily over the barrel) and is fully extended if the rifle is uncocked and fully compressed when cocked. I bought 2 springs, one a little heavier coils wont compress far enough so I tried the weaker one.

Works like a charm! No chatter or binding and the rifle shoots quite well with it. I was messing around and couldnt find heavier springs near the original size. No problems yet

–edit–

Its a 74 gram 1-peice hammer from Tony. I didnt like using the 90 gram.

maw

Participant

March 31, 2009 at 4:37 am

Randy that is blasting some power and 30 shots, can I ask what was the ending pressure.

sawtime

Participant

March 31, 2009 at 4:25 am

my .25 cal 24″ talon valve,hammer is spittin crow mags 26.2 grain at 820 to 780 over 32 shots
so, I would say very nice

SAW

Viewing 5 replies - 1 through 5 (of 5 total)

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