jgilk1

the 98 custom and the custom pro are two completly different markers the bodies appear to be the same but the custom pro is the lower end marker the superflybolt should work just fine with your 98 custom if your gun came factory with the act it should work just fine

as far as range it's a pb gun if a bolt says it will increase the the velocity 15 fps it just mean you are not going to be using so much air to propell the ball @300 fps get a gas through for grip and use hpa will give you a more consistant shot but as far as range is concerned a jand j ceramics barrel of a freak kit will allow you to get a better paint to bore match giving you maby another 5' of accracy

to adjust velocity on a tippmann 98 to the left of the ss line there is a set screw adjusting this changes the velocity
turning it in lowers velocity and turning it out increases velocity adjusting velocity above 300 fps is never safe and the gun should be chroned befor shooting it @ another human being

hope this helps if not pm me i explaing it a little better

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