"Accurize" your .22 LR/Mag revolver
I found this product to increase the accuracy of my Smith & Wesson 617 4" 10 shot .22LR revolver. The forcing cone was scored from the factory (goes to show ya) and the timing was ever-so slightly off causing very mild lead-shaving. I used this product to extend the length and breath of the forcing cone to .325 long as compared to the ~.250 standard. This product eliminated the lead shaving completely and yielded a 1.25" 10 shot group @10 yards, sitting, two-hands, no rest with Remington golden bullets (ehh). The quality of this reamer is great, but not perfect. The 8-32 threads that are cut in the end to accommodate the guide rod actually were slightly visible in the machined groove. This didn't appear to effect the reaming and the cutting edge looks un-marred after a single use, bear in mind i used lots of cutting oil. This is a three groove reamer. Also, the guide rods that are sold to complete this tool are also constructed of steel; I would consider it a poor choice to use them in a steel barrel(steel on steel, not good). Rather, it was quite easy and more affordable to thread the end of an ALUMINUM cleaning rod and use it as the guide, it must fit the barrel snugly. Lastly, this tool did not come with any instructions and I would not recommend using this tool without professional assistance.
