I want to use a 270 barrel that I have on a short action. I am not interested in a WSM. I was leaning toward a 270 IHMSA, but a reamer is proving difficult to rent. I can live with a 270/250 Savage AI, but have a bunch of 300 Savage brass. Once fireformed, is the 250 Savage and 300 Savage the same brass?? IOW, Can I use 300 Savage brass to make 250 Savage AI brass??