Nothing is more important to rifle accuracy than the quality of the barrel's chamber. In a mass-produced rifle, it is simply impossible to achieve the close tolerances necessary for world-class results. The master machinists at Gruning Precision painstakingly set up each barrel blank on the lathe, indicating it to within .0001" concentricity--that's right, one ten-thousandth of an inch.

This means, in layman's terms, that the chamber is cut perfectly aligned with the bore, and as a result, the bullet enters the rifling perfectly straight.

Gruning Precision has hundreds of chamber reamers--everything from 17 calibers to elephant rounds. In many cases, we have more than one reamer for a given cartridge, so that the customer can set the rifle up for the particular bullet weight desired.

The staff at Merlyn Rifleworks is experienced in wildcatting and will be happy to assist you with the experimental project you might have in mind. We also offer custom reloading dies and gauges.