Cort said:I don't own a Dasher but I would try a 6 MM BR bushing die and just back the die out a bit so you don't contact the shoulder.
Cort
ridgeway said:Wilson makes a neck sizer.
22BRGUY said:Try Gunstop in Minnetonka, MN. John over there has just about anything in dies in stock. His prices are also reasonable. Just google Gunstop.