[7MMGUY]

While bore guides may have been used by benchrest shooters for a long time, they only began to become popular with sellers like Cabelas, Midway, etc about ten years ago. What did shooters do before that, ruin their barrels, I doubt it. Why would bumping an aluminum, brass, or carbon fiber rod against the rifling of a barrel cause damage when sending a hard jacketed bullet down the bore at 3000fps does not? Some of my older rifles, two Sakos come to mind, have been shot and cleaned hundreds of times and still shoot three shot into a 1/2 inch at 100yds consistently. Educate me, why do I need a bore guide?