For the gunsmith who does not want to make his own drill
extension, our Hi-Speed steel drills are designed especially for
deep hole drilling for Brownell Barrel Liners. The hole for the liner
must be drilled slightly more than halfway from each end, and the
ONLY way to ensure proper joining when using a hand drill is to
use these piloted drills. Special, helix angle eliminates the
tendency for the drill to “pull” itself into the material and jam,
saving time and headaches. The extra cost for this premium quality
drill is far cheaper than ruining a customer’s gun with an off-center
hole. Given proper care, will last a lifetime.
SPECS: Hi-Speed steel. 15" (38.1cm) OAL. Handles barrels up to 25" (63.5cm) length maximum. Pilot length: 1" (2.5cm). Pilot diameter: .22 - .216" (5.5mm); .25-20 - .247" (6.8mm); .38-40 - .391" (9.9mm); .44-40 - .419" (10.6mm).
Catalog page 162, 453