Join Date: May 2012
Location: Southeast Kansas
I drilled and tapped a 410 to put a red dot on it just like you are wanting to do - my wife likes shooting with the red dot. If you have a drill press and drill press vise it is pretty easy. Best way to find the top center of the barrel is to clamp the lug in the vise and put a small dremel grinding point in the chuck - mark a line across the barrel where one of the holes will land and turn on the drill press. Slide the vise back and forth (cross wise along the line) under the grinding point lowering the chuck until the grinding point just grazes the top of the barrel. That is the highest (center) point of the barrel. Center punch that spot and drill - once you have one screw drilled and tapped where it can hold the base, you can mark the rest of the holes with the base screwed in place.
Dan - Handi's - 157 22 Hornet Mannlicher Stock, 157 30-30 Mannlicher stock, 45LC Buffalo Classic Carbine with 22K-Hornet and .357 Max Talo barrels, 45-70 Buffalo Classic, 204 Ruger Ultra with Fluted Barrel, 223, 12 Gauge Topper Deluxe Classic, 20 gauge TDC, 20 Gauge Topper Junior Classic, Pardner .410 Youth, 17HMR Sportster, .357 Mag Handi...