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Forums > All Calibers > .25 cal with FX Superior Heavy Liner 700MM (1:18 twist)

jewilber@hotmail.com | 1/18/2023 5:28 PM
Home built Crosman/Benjamin heavily modified Frankenstein custom
Internal regulated pressure set at 1400 PSI 
Ø.155 port in transfer tube, barrel and valve
.25 cal with FX Superior Heavy Liner 700MM (27.560") (1:18 twist) with carbon outer sleeve
FX heavy barrel insert loves .25cal 29.5 and 29.0 NSA .249 slugs
850-860 fps at muzzle
tight groups at 45 yards. (5 shot .625") Bipod supported, coffee induced shake
More test data to follow with heavier slugs