JNL PRX III Tuner
*Can't be bored bigger than .950
*Set your Tuner with the Purdy Prescription as oultined by Tony Purdy in the 9th Harmonic
*Measure your exact barrel length from the breech to the muzzle to properly set it
*Greatly simplifies your tuning procedure
*3 Nylon Tip Screws to lock down your tuner once it is set
27" Barrel = 3.099 in tuner length
26" Barrel = 2.974 in tuner length
25" Barrel = 2.849 in tuner length
24" barrel = 2.724 in tuner length
23" barrel = 2.599 in tuner length
Tuner is adjustable from approximately 1.675"-2.075" in length
Each number on tuner is .001" longer
Add the .5", 1.0", or 1.25" Extension to get the appropriate length
The 1.0" extension comes with the tuner at no extra charge