FX Fx Leopard 600mm Bottle .25 cal

koberlej · Aug 30, 2025

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 · Aug 30, 2025

edited

blueflax · Aug 30, 2025

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

Ron

Airgun.Sniper · Aug 31, 2025

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 · Aug 31, 2025

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

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FX Fx Leopard 600mm Bottle .25 cal

koberlej

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koberlej

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blueflax

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Airgun.Sniper

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