this could go on for ever,I for 1 don't have the resorces to do the testing that the G has done (who does) but they have determined it to be better for heat and durability. so they spec it ,if they are willing to spend your tax dollars on it than that's good enough for me . the prime reason the folks who use 4140 is it is cheaper .the best always cost more .the folks who will settle for less tell you it is just as good ,I often wonder how much real life testing they have done to reach that conclusion .
WHO ME ? ---- A government big enough to
give you everything you want, is
strong enough to take everything
-- Thomas Jefferson