gf is gram force, usually per square mm.
to convert spring rates in gf/mm to lbs/in multiply by .0559968.
ex. 200 gf/mm * .0559968 = 11.2 lbs/in.
sounds like academy is using kg/cm which would be a stiffer spring rate than a gf/mm rating. just use the kilogram force - pound force conversion on online conversion to get the conversion factor.
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