Mine is a 1957 M70 Varmint model 243 that I ordered new in 1957 while working a summer job.
That barrel is SS, medium heavy and 26" long.
I used it for competitive target shooting at 200 yds and for chucks.
The barrel wore out however a friend had a new one in 220 Swift and it's on the rifle now and shoots as well as ever at varmints.
I paid about $140 for it.
