grs standard, and the mass I'm sure will help in turning the 308 case, right now I am having trouble with the er20 collets pushing my depth stop out$%@((& upon tightening
The enormous weight and initial inertia turning the brass case will aid in the small diameter scratching. And YES it is for .308 casings, or probly a few 50's
This is been taking a lot of time. It is designed to hold .308 casing for engraving. The rounds are from the 21 gun salute for my fallen brothers. Not tried about 85 to 90% done. Thanks for looking. Rob