It's so when a right handed person see's it coming it throws them off balance.Just a curiosity question. All the rifle and handguns that I know of have a clockwise twist direction. Is there some technical reason why the twist is not counter clockwise or is this just an agreed convention.
Dang, I was wrong. Oh well.Interestingly, Colt always used left hand twist, and their salesmen stated that it was to keep the barrels from unscrewing. In spite of the various theories that have been put forth, it is just a matter of tool design and specification and, in the case of Colt, tradition.
Jim