Vulcan owners - What pellet gives you best group?

[Daxx]

What pellet brand, shape, weight has performed the best for your Vulcan and given you the best groups? I know each gun is different, but would like to hear what others have found.

 

[philip]

Vulcan .22 is designed for Air Arms 16 grain pellets shooting at around 285 m/s .. I've been told that they perform slightly better than JSB because weight is more consistent. That's what I use and never tried anything else. Thanks

 

[linsfreak]

My .22 vulcan loves these. ...

http://www.pyramydair.com/s/p/JSB_Match_Diabolo_Exact_Jumbo_Heavy_22_Cal_18_13_Grains_Domed_500ct/690

 

[TKA87]

My Vulcan.25 favors the JSB.25g and the JSB King Heavy 34g,s but I haven't tried anything else.

 

[Ginuwine1969]

i'm shooting JSB 34 MKII right now they seem the best.

 

[fe7565]

Mine shoots well the JSB 25 and 34 and the AA 25. So far only out to 50 and 75 yards.

 

[0akhonor]

For my .22, it's air arms 18 grain. Doesn't like the 16...JSB 18 's are a close 2nd.

 

[StormSunny]

What speed can be achieved with JSB 34 MKII?

 

[FearnLoading]

"StormSunny"What speed can be achieved with JSB 34 MKII?

Around 825 fps on the MK1. The MK2 should be around that. Depends on the hammer spring tension. Seen people get between 810 to 880 fps. 

 

[Ginuwine1969]

i get the MKII @ 814FPS if i max out the hammer spring, but i only get like 26 shots, so i moved it down to 800 to see if my SD will flatten out a little bit and give me 3 full clips. I probably need to get a real tune. I believe with the regulator as is (130 bar) If i drop the HST down a bit more and shoot the 34 grain JSB @ 750 i should get 4 clips and a nice even SD / ES. But i'm afraid of a loopy trajectory at those speeds.

 

[Ginuwine1969]

Oh and so far the MKII gets the best groups at 100 yards, everyone is good up to 50 yards, 75 and 100 are the deal breakers. I was popping 1" clays at over 125 yards oh and shot gun shells.

 

[StormSunny]

As far as I know the regulator is set at 150 bars in Vulcan .25. Is it possible to tune it for MKII? I'd like to achieve 880'ish FPS.

 

[Ginuwine1969]

with the Regulator set at 150 your shot count would suck. 3.33 PSI per shot, and I start fill at 220. About 25 shots.

 

[StormSunny]

How about the speed with MKII then?