OK, this has driven me crazy. SO, I went on the Internet to do some real research into the forged vs investment cast issue and found the following- it makes no difference. A forged frame may have sharper crisper edges while a casting will generally be smoother and rounder, but both will require machining and finishing before fitting. Both, if properly heat-treated will be strong enough to last generations. Some say the forging is ultimately stronger, but all reloaders know their manuals have loads listed "Ruger only" and Rugers are all investment cast. The military specifies forgings for its rack-grade rifles, but is happy to accept the investment cast 40XB Remington 700 for its sniper rifles. And forgings are made from bar stock or billets. Steel isn't found that way naturally - to get a billet, it has to be - you guesed it -cast. The strength of any forging or casting is determined most by the carbon content -40% is better then 20%- and the nature of the alloy - chrome molybdenum is better than chrome vanadium - you get the idea.
Just as men have forever stressed and fretted over their endowment, despite the medical and biological facts, we still sense and feel (know) in our heart of hearts, size matters! Forged or Investment cast? LOL - "Do the math."