My son purchased a Winchester model 100 and asked me to work up a load for it using a 165 gr bullet. That kind of leaves things wide open. From what I've read the model 100 isn't a tack driver. I did acquire a set of RCBS .308 small base dies several years ago but have never used them. Does anyone on the forum have experience loading for a model 100 or another brand of semi-auto in .308? I'm thinking powders like 4895, Varget or TAC may be a good place to start but would like to hear from those with more experience.