The Technical Rifleman

The Technical Rifleman

The official Gun Digest blog of Wayne van Zwoll, covering all things rifles, optics, ammunition and ballistics.

Dry fire gun drills

Is It Possible to Overdo Gun Drills?

    Practice. It’s the way to get good at just about anything. Gun drills can even help you get good at doing the wrong thing. Lones Wigger, the most decorated Olympic rifleman ever, once told me he practiced gun drills up to four hours a day for the U.S. Army Marksmanship Training Unit....

Traditions designs still make for effective hunting bullets

Big Game Hunting Bullets that Disintegrate?

    Percentage of retained weight may appear the reigning measure of expanding bullet performance in game, but the last deer I’ve shot fell to thin-jacketed hunting bullets of ordinary construction. And in Missouri, Dynamic Research Technologies (DRT) is making big game hunting bullets designed to, well, disintegrate into tiny particles. “We’ve found they...

Harris Bipod for Rifles

How to Use Rifle Bipods, Tripods

    The animals you hunt live amid an abundance of rock, trees, hillocks and other rifle rests. Alas, there’s never a rock or a limb where you need it, when you have little time to fire. That’s why Cro Magnon man invented a rest for his spear…Well, perhaps the bipod doesn’t go that...

Target shooting improves marksmanship

The Evolution of Marksmanship

  One shot does not a marksman make. Neither does it demonstrate accuracy. A single hole, in an animal or a paper target, shows only that you fired the rifle. It takes more to achieve true marksmanship. During the iron-sight stage of a smallbore match years ago, I settled into prone and accidentally brushed...

Headspace gauges

Headspace 101: What Happens Inside Your Rifle’s Chamber

  Headspace is one of the most critical measures in your rifle. A quick definition: the distance from the face of the locked bolt to a datum line or shoulder in the chamber that arrests the forward movement of the cartridge. The term originated when all cartridges had protruding rims, so the measure was...

1/4-minute clicks on scope

Wayne van Zwoll Explains: Minute of Angle and Milliradian (Mil)

Though shooters carry the terms as common coin, not everyone can define “minute of angle” and “mil” (milliradian). Minute of Angle A minute of angle, usually used as a measure of group size or shot dispersion, spans 1.047 inch at 100 yards. Call it an inch. But as it is an angular measurement, its...