The "Swift" was one of the first loads that was know to do 4,000 fps................
However this speed and the amount of powder used, was known
to shorten the life of a barrel and chamber area.

The 1:14 twist will handle the 52 and 55gr bullets quite well but
bullets over 65 grs may start to tumble at 200 yards. This will just
have to checked out on paper.

Enjoy that "Hot Rod".