Rafiki
AH enthusiast
- Joined
- Mar 19, 2023
- Messages
- 369
- Reaction score
- 756
- Location
- Florida and Minnesota
- Media
- 4
- Hunted
- Tanzania
Ok, you de man, you win the dick measuring contest.And I say again that I have a Ruger No.1 that is chambered for .460 WbyMag necked up to .510-caliber, a .500 A-Square.
But I had the throat lengthened to seat the 750-grain Hornady A-Max bullets out to a COL of 4.75", so I call it the .510 JAB.
A modest load with 750-grainer at 2150 fps from a heavy 27" barrel lands on target at 942 yards with a 5-mil holdover.
That cow pasture shooting was from a sit with a tall bipod.
No weakening of the action with that, aye.
With custom barrel no drilling into the chamber to mount a quarter rib either.
With a simple re-chambering of a .458 Lott
there may be weakening of the chamber since the studs and screws holding onto the quarter rib
have their holes drilled right over the chamber.
Better to get the custom barrel and have your gunsmith use a quarter rib or longer Picatinny rail with solder or J-B Weld over the chamber and any screws farther forward on the barrel.
Get that custom barrel made with the shank cylinder lengthened to 6" or more long for a level mounting of rib/rail.
That is what I did.
You can find videos on the internet of Bubba shooting his .460 WbyMag Ruger No. 1 that
was made by a simple re-chambering of a factory .458 WinMag or .458 Lott.
Good for a few stunt shots on a video.
You never know when the quarter rib might blow off the top of the barrel.
Any Ruger No. 1 re-chambering requires pulling off the quarter rib and measuring the depth of the holes over the chamber area.
Then subtract that depth as well as 1/2 of the chamber diameter from 1/2 of the barrel diameter at that point, to see how many thou of steel remain to plug that chamber gas port.
I have had the quarter rib loosen on a factory .475 Linebaugh Ruger No.1.
After that I prophylactically J-B Weld the quarter ribs on any Ruger No. 1 that kicks a little.