Gass relief hole botom of breech block.

[Vlim]

Doing this simple gas relief hole in two of my P-08's that for sure aren't collector guns

How do you decide which guns are collectable or not?

You may have missed the fact that the 1970s Mausers have gone up in price and are being collected.

Drilling holes in them will not help to preserve or raise their value. On the contrary, its a good way to decrease value.

If you want to drill the heck out of guns, get a low grade 'shooter' P08 to play with.