Hi Galloway, You can in a pinch if you don't have the correct ones, case tapers are different so be careful, I do 44-100 and 45-90 with 45-70 dies, BUT, I can't full length size if I need to, so far I have'nt needed to. Myself, I kinda use them for neck sizing, so to speak. The correct dies are always the best, but, po people got po ways.