I did the same thing. Had 40rd.s loaded for a Winchester .270 for an elk trip out west years back. Never got a shot, didn't like the way the Winchester shot, so sold it. Couple year ago, bought a Savage in that caliber figureing I already had dies,brass,bullets. First trip to the range, none of the stuff I had loaded for the Winchester fit. Only got to fire about 10 rds., as that was all I had full lenght sized. Pulled the bullets on the other 40, full lenght sized them, reloaded them, and they all went in and functioned/fired just fine. Just for peace of mind, went thru and F.L. sized all the .270 brass I had, just so I wouldn't waste another trip to the range. gypsyman