FX Fx Leopard 600mm Bottle .25 cal

[koberlej]

What are the heaviest slugs I can run in my Fx leopard 600mm Bottle version? I’ve tried .25 cal 42 grain H & N heavy’s. I turned up the hammer spring and reg pressure getting around 800fps. Would like to see 950-1000fps. Any ideas?

 

[koberlej]

edited

 

[blueflax]

I had this happen with a .22 Crown. I installed a slug kit and got the velocity I wanted.

Ron

 

[Airgun.Sniper]

Not sure if this helps but I was told to push something that heavy in that gun it wouldn’t be stock. It would need a tungsten hammer

 

[MongooseV8]

I would keep it stock and try something lighter like the Nielsen 34.9g slugs.