Just spent a couple hours at the range with the .460 S&W in the T/C Encore pro-hunter.
The rifle has a Burris 1.75 X 5 Signature Safari (with 4.5" of eye relief)
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mounted in a Talley medium high extended set up. The scope has a good track record and has shot 5/8"-3/4" groups at 100 yds. from a .375-06 improved ( .375 Hawk-Scovill) with a Douglas barrel.
After bore sighting and shooting several rounds the rifle was in the ball park at 50 yds. The .460 loads were in new Starline brass, Speer Gold Dot 300 gr. HP, 40 gr. W296 with Federal #215 Large Rifle Magnum primers.
The three five shot @ 50yds. -groups-, (haha)
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maybe patterns is a better word, were 4.5"-6"
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Had the Pact Chronograph set up but it only recorded 2 rounds of Heavy .45 Colt. The weather was overcast gray with about 1/4 mile visability in fog.
The +p+ .45 Colt loads 360 gr. Cast performance with W296 at 1,560 fps. shot into 1.5" groups at 50 yds. Not sure why the .460s shot so bad but i will try different bullets and powder charges....
Eddie