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My .22 850 build
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All Springer/NP/PCP Air Gun Discussion General
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PCP/CO2/HPA Air Gun Gates "The Darkside"
(Moderators:
Rocker1
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only1harry
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splitbeing
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My .22 850 build
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Topic: My .22 850 build (Read 3034 times))
fsae99
Shooter
Posts: 53
yes
Real Name: James
Re: My .22 850 build
«
Reply #20 on:
February 16, 2017, 10:00:03 AM »
Work has been killing me this week so only a little testing done. I definitely need a tank to use for filling the bottle, hand pumping not worthy and takes up time I don't have.
At 1500PSI I get 945FPS this is a 300PSI drop to achieve basically same FPS as before and at 1800 PSI fill I get 995FPS this is a 45FPS increase at same PSI. These test were without adjusting the spring and the same JSB 15.89g pellets.
I have to go out of town this weekend so it will be next week before I can get back to this. Next I will test heavier pellets.
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Valdosta, GA
Hatsan 135 QE .25 UTG 30mm SWAT 3-12x44 AO
Hammerli 850 .22 UTG 30mm SWAT 3-12x44 AO
Tucobenedicto
pest sniper
Sharp Shooter
Posts: 894
yes
Real Name: Fabio
Re: My .22 850 build
«
Reply #21 on:
February 16, 2017, 12:42:19 PM »
excellent! looking at those numbers i agree to the choice of heaviest pellets. 940-950fps maybe is the speed to keep to avoid pellets loss of stability.
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Perugia middle Italy
Hammerli 850 PCP .177
Bottled regulated Prod .22 16,5" Barrell
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GTA
»
All Springer/NP/PCP Air Gun Discussion General
»
PCP/CO2/HPA Air Gun Gates "The Darkside"
(Moderators:
Rocker1
,
only1harry
,
splitbeing
) »
My .22 850 build