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

Went to public range Wednesday to fire the PP/duplexed-BP loads with Marcella (M70).
Took Daisy (Ruger No. 1) along to finish off the 3 shots with Hornady brass and 83.0 grains of AA-2230.
Her barrel was left as fouled 10 days ago by 16 rounds of TSX,
stopped shooting when jammed by the Norma brass with 86.0 grains AA-2230 at 3.565" COL.
So rounds 17, 18, and 19 were as follows,
I will not push it any higher at 3.565" COL:

450-gr TSX, .458 WinMag 24" Ruger No. 1 factory barrel (.459" groove, 1:14" twist)

83.0 grains of AA-2230
Hornady Brass
F-215 primer
3.565" COL
2493 fps instrumental, 5-yard, 3-shot mean
2504 fps MV
for BC = .369
87 degrees F
3-shot extreme spread 3 fps, st. dev. = 1.6 fps

I cannot explain it except to say that when I saw the first two bullets make one hole at 50 yards,
I got excited and pulled the third shot !





The sun was low and I used the auxilliary lighting on the Caldwell G2 chronograph.

I then discovered that I had left the bolt for the other rifle at home.
So it was a 50-mile round trip for those three shots.
Worth it though it was for the freakishly good results,
the PP/duplexed BP loads will require another trip.