Ruger oversize groove diameter

[Catpop]

Could this be why Ruger is said to take hotter loads? because they have over bored throats that reduce pressure?

I always felt reason for ruger's fame of handling heavier loads was in quality steel, exceptional modern engineering, and exceptional tight mass production fit. The except is fact they don't have the barrel machining correct and to saami specs. Jmho

 

[Catpop]

Almost finished with quest and have some very interesting results as to cylinder throat size, groove size, and what boolit diameter it takes to not lead a barrel!
Should post by next week.