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Another 850 Converted to HPA today. good results!

December 20 2011 at 5:43 PM
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Austin  (Login ganderss2424)


There was an offer I couldn't refuse on an 850 on the classifieds the other week. I have been through a few of these so I knew what I was getting into... I had a chance to get out today and do some testing! I had some pretty good results....

Here is the info:

850 in .22 Caliber.
13ci tank
B&A long adaptor
1700/1800 psi regged output... ( I added a few shims to a 1400 reg....)
Dominator spring
Breech port mod
High flow valve mod

I was getting 4 really good mags @ 30fpe. I could squeeze out one more mag if need be.

Found 18.1grn JSB's shooting 870FPS to be very accurate. I was able to shoot quarter size groups at 50 yards all day off the bi-pod. The picture is an 8 shot group. Here are a few pictures!!


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