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How is the turrets on the frontier? Does it give a positive click as the sidewinder

Vulcan .22 at 870 fps average with 18.13 jsb gives me four magazines of 44 shots from 200 bar down to 140 bar. I am expecting to get 50 shots if i shoot it down to 120bar

Hi Harry, just re check my trajectory looks like i have two zeroes 26 and 40 yrds and my scope height is 2.63"

Finally got another chrono and got a new bc of 0.0455

I tired calculating my bc for jsb 18.13 using my vulcan @ 877 fps on average. I zero my rifle at 26 yrds and at 54 yrds one inch drop which gives me 0.056. Is this possible? And has anyone achieve this bc using the 18gr jsb

What is the main difference between gen2 and gen3 .22 cal vulcan

Thanks kris, i just tried it out will try re zeroing it as soon as i get time. 

Same problem here, bought sportsmatch adjustable weaver mount for my Vulcan. First I centered the scope and when i tried zeroing with my sidewinder tac 6.5-20x42 it was about 6 inches to the right at 25 yrds


I am doing the same here. Ive shorten the spring to about 54 mm with original valve spring and reg set at 130. I also install a lighter hammer from Robert Lane and my gun now produces 70 shots averaging 860 from 235 bar fill. I also tried a 120 reg pressure and doesnt work out for me. It...

I have the same problem with chairgun. With my air arms s510 and hawke sidewinder 30 3-12 at 860fps with jsb 18. Chairgun indicates about 6.8 mil dot holdover which actually is 5.3 mil. So did some research about bc variation and chairgun itself has various bc to select with my 18's depending on...

I fill to 235 bar and fire two three shots and shoot down to 115-120bar. The last 10-14 shots is after the regulator which is set at 130 bar.

The original hammer was 49.5grams and the one which Robert Lane made for me was 36.5 grams. It reduced the fps for about 10-15 fps but increased the efficiency. Must be very carefull while shortening the hammer spring even 1 mm can effect the fps by 10-15 fps in my rifle. What i did was i set...

I managed to get 70 shots averaging 857 fps with jsb 18.13 on my air arms extra fac (full length) between 235 and 115 bar fill with 15 fps spread. Regulator set at 130 bar, shortened hammer spring and a lighter hammer from Robert Lane.