Thread: 308 case differences?

Cams point is a good one, sometimes all you need is an extra couple of thou and a 1/16 of a turn in can often over come a little stretch and get that for you. But if the shell holder is hard up on the die then you have to make some adjustments. Its simply a case of your chamber being on the shorter end of the saami specs and your die being at the longer end. Taking a skim off the shell holder is simple enough and doesn't have to be precise but if you take to much you can weaken the lip and with a case thats a bit hard to extract from the die it can pull the lip off the holder. Some people prefer to take a bit off the bottom of the die instead. I have done a shell holder with a bench grinder and it will work but far better to get it machined off. When you set up again wind your die in no more than 1/16 of a turn at a time, size and check in the chamber repeat till it fits. Then check it with a fresh piece of brass. You are looking to bump the shoulder to give no more than 2 thou clearance but I like to feel a slight crush when chambering.