Home Forums Hunting & Shooting Express Rifles and Big Bores Only The great 458 Winchester. Everyone should own one at least once

From Saint Sir Finn's latter-day epistles (1995):






Well, that may make no sense to anyone but me, but my sense of humor likes it,
the Dirty Finn Rifle versus the Clean Finn Rifle made from a Dirty Harry Rifle, heh-heh-heh.

The factory ammo tested in Saint Sir Finn's rifles:



The four rifles used by Saint Sir Finn for chronographing velocities of the factory loads:



The results:



Note the "free-travel distance" in throat of the various rifles.
This would be for free-travel movement of bullet to first contact in the rifling at bullet = groove diameter,
which should be at minimum 0.6725", with no slop in a SAAMI chamber and assuming bullet diameter = groove diameter = 0.458".
Saint Sir Finn's .425 WR rifle re-barreled to .458 WinMag had a very short throat,
allowing higher velocities and pressures.
He thought pressures were never excessive in this rifle or any of his rifles with any and all factory loads he had ever used.

This might be a young Saint Sir Finn on the right below,
sometime after 1967: