John Linebaugh:
" FRAME STRENGTH
Here at Linebaugh Custom Sixguns we build some of the most powerful handguns in the world. All of our guns at this time are built exclusively on the Ruger Blackhawk frames. (Ruger Super Blackhawk, Blackhawk and Bisley models are all identical. All frames in the new model that was introduced in 1973 are the same.) In all of my findings the first part to let go in a revolver is the cylinder. I have tested cylinders from purposely bulging them to total destruction. In all cases the frames were not damaged until the cylinder totally failed. When a firearm is fired there is pressure on the base of the bullet to propel it out the barrel. There is an equal rearward thrust against the case head and thus transferred onto the action of the firearm. This is known as CASE HEAD THRUST. Case head thrust is CHAMBER PRESSURE x THE SURFACE AREA OF THE DIAMETER OF THE REAR OF THE CHAMBER. I won't go into great detail but a 45 Colt at 32,000 CUP chamber pressure exerts just under 3 tons of pressure on the back of the frame. A .44 magnum at 40,000 CUP chamber pressure exerts just over 3 tons of pressure on the back of the frame. Basically the same.
When we fire one of our .475 or .500 caliber revolvers we hit the Ruger frame with approximately 5 tons of pressure, (thrust). This duplicates the thrust of a .458 Win Mag. In testing and building over 200 major caliber revolvers on Ruger frames we have never yet had a frame move,stretch or bend. They are very tough. The cylinder is the first part to let go".
Never had a frame move, stretch or bend... :shock:
As I said, the BFR may have more fat, but if a BH frame can handle the equivalent case thrust of a .458 WIN MAG, how much more strength is needed?!?
I think BFR are exactly as advertised, BIG fine revolvers. I'd like to have one myself one of these days. But as was mentioned, the big fat frame costs big fat extra! "Frame strength" is not a selling point that even bears mention IMO...