Hey fellas, My names Trey, Im new to these boards but Ive been reading the post here for a while. learning all I can from those who know. Ive got a SA loaded M1-A Ive had for about two years and its a real treat to get to go and shoot it. My question is about headspacing. So you learn how to use a headspace guage. Good. So....what is to be done with a rifle that fails the guage to get it right ? I just dont see where anything can be adjusted or tweeked to get the spacing right. Theres nothing wrong with my rifle. Just thinking.