I load quite a few .308 bullets in my rifles. The 115 grain bullets for the .30 carbine with 14 grains of Trail Boss zip at about 1700 FPS out of a 91/30. They bang steel knock down targets, and bowling pins at 25 yards with no problems. As far as groups I have never shot groups with them. I worked up the load for my wife to shoot in her rifle. She likes them quite well, and she is quite good with it.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.