Recent content by Jenko

cricket uses M14x1 thread 

Area of .25 is 50% greater than of .22, and you are asking for aprox 50% more energy so i think efficiency should be the same if ports are matched for kaliber. Since you want more energy from .25, at the same air efficiency number in terms of FPE/ CU inch you use more air in .25 so lower...

Hello Sean. I have decided to use 0.06 as my bc for this speed as it is reasonably close to my measurements, and as you may know BC changes with velocity downrange so a general number works for me. This is how i estimated, i took long range results more seriously since there the BC matters...

Thank you Glem Chally. This is of course best group, usually around 3-4cm groups but without rear bag from bench. I am more into dialling everything with chairgun for longrange hunting. I believe the speed was somewhere around 250m/s (820fps). I do a lot of tinkering but not enough result...

My best 5 shot group with Kalibrgun Cricket .25 at 100m shooting King Heavy in calm conditions from bench with rear bag and bipod. Lost original picture, this one is from Range buddy. Center is 2cm Best, Jenko

Today i tested some more my new plenum, accuracy is good but i do not get such good performance as you alpine 84. Did you do your own tuning of hammer and valve spring? Per magazine my gun uses 50 bar from 260 to 210bar at 270m/s and 80J. Is the problem in valve return spring? How tight is...

Made the plenum extention today, came out good. Georgia airguns increases the length for 1.75 inch so roughly 44mm, i made mine 55mm long, just enough that my custom LDC still fits. Put two magazines trough, big decrease in loudness and air consumption. Tomorrow more testing and pics

Hello. thank you for the quick answer alpine, i seen your thread on this extention just now, i will mamake it myself as i have a lathe at home. i am really shocked at improved performance, maybe i will set it for lower power than you but better shot count. if i go from 75 to 85j at muzzle...

Hello. Thanks for reply guys. Anthony I usually fill to same pressure that is in the bottle and shoot until 125 - 130bar then refill, no idea of shotcount but you can easely calculate number of shots from given data. alpine84 thamks very much for fhe info but i do not know of what plenum mod...

Hello. Just a quick info, today I tested JSB King heavy out of my .25 Cricket and got this velocity numbers: Yards - fps 0 - 865 49 - 782 77 - 725 107 - 670 Each speed is the average of three shots. I got very good bc numbers at this speed. For anyone that is interested, I have my...

Helli, yes i know, we spoke about that, was just wondering about efficiency at different power levels, maybe 30 fpe, which is more desired power i think. Thanks for answer cernunnos. jenko

Hello guys. i am very interested in this hammerless system from efficiency standpoint. if someone has recorded pressure drop and number of shots at whatever power, would be so kind to share? Maybe some info about regulated pressure. It would be very interesting to compare efficiency of huben...

Hello. I look at it from force on pellet perspective. work=force x travel If you have higher pressure(150bar) and close valve after lets say 4inches of pellet travel, the air will expand till end of barrel to some pressure. if you set at 120bar, for same work you will have to close valve...

I found a very sturdy synthesizer case for cheap, it will offer same deree of protection and will be less suspicious for carying around. I will have to make custom inserts for gun, and because it is deep i will try to make room for FX pump too. I will post some pictures of process. Jenko

Hello guys, thank you for the reply. I live in Slovenia, it is still a lot more mone than in US. I read somwhere on forum about some u sending stuff from US, ot to look for that again. I thouht i could get $60 case for les than 140€, somehow.