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View Full Version : IBO Speed 315-320??



802moneymike76
09-30-2008, 12:04 PM
i own a 08 cheetah and would like to know how martin rated this bow at 320 fps at 30" draw when the max draw length is 29". can anybody explain this?

razorjack
09-30-2008, 05:45 PM
i own a 08 cheetah and would like to know how martin rated this bow at 320 fps at 30" draw when the max draw length is 29". can anybody explain this?

UUMMM i seen that too,must be a typo,heck if they used a 29 DL to achieve that speed thats even better,it still is a sweet shooter hands down.

scepterman30x
10-01-2008, 07:16 AM
UUMMM i seen that too,must be a typo,heck if they used a 29 DL to achieve that speed thats even better,it still is a sweet shooter hands down.

Usually they revert to just using the 5 grains per pound of draw weight and use that figure...or they could just add approximatly 10 fps to account for the 1" in draw. However I believe it is the former that they use.