short vs. long action

[oto]

I am thinking of my next build and would like to know what is the max oal for the short and max oal for the long actions. I know I have seen them on this site before but can't find them now.

[Texas Solo]

In my experience, it depends on your chamber and magazine. I once loaded some .223 to the chamber length minus .005". Hand fed, they shot great, but would not fit the magazine. So, the OAL is probably dictated by the mag.

[oto]

Ok, so what are the different mag lengths or what are the measurements of the openings in the bottom of the receivers? All i have is a RUM action and a couple of target actions so I have nothing to measure.