I don't have my reloading books. But just guessing it would be the difference between 257 Roberts and a 308. And a 30 30 and a 308.i will post data in a couple of days. I will get some .243 Andy .65 and 7. Mm and maybe some .35, 9.3 and 8 mm data also.

Last edited by Angus1895; 08/25/17.
"Shoot low sheriff, I think he's riding a shetland!" B. Wills