Probably because the ejection/reload action (mechanical activity) of the semi disturbs the rifle's aim before the bullet exits the muzzle. One would also expect the range of the bullet fired by the semi to be a little less because some of the energy that would otherwise by used for propulsion, is drawn off to energize the ejector.
Semi automatic
Earlier rifle designs did not have adequate strength for high powered cartridges. The bolt action is a very strong action, and is also a very accurate rifle. Bolt action rifles are used for hunting, target shooting, and for military sniper rifles.
ALL OTHER THINGS BEING EQUAL- yes, the bolt action is typically a more accurate rifle. However, there will be exceptions.
Yes. Especially towards the start of the war, bolt action and semi automatic rifles were the most common infantry weapon used.
Book of Bolt Action Rifles should help
automatic rifles work by the exerting gas made from the bullet and the gas pushes back the bolt loading a new round in
No.
It is possible, yes.
Are you asking about double rifles,rook rifles or bolt action.
Matter of personal taste. Both are good rifles. The pump is faster for a second shot, the bolt a bit more accurate.
Up until the end of the Vietnam War they were. The 21st century technology might be different.
They are semi-auto,i currently own one that was my dads and before that it was my grandpaws gun.