Couple of questions

[sheepherder]

Originally Posted by danielsand

Then I applied the tape, and shot it with Federal 115gr (that's about as mild as 9mm factory ammo goes these days), and it marked the tape!

Daniel, you don't say what the tape looked like...Was it just 'kissed' by the toggle, or was the tape mashed flat???

I'm not a big proponent of the tape test. I've attached a pic of three of my Lugers showing the impact area of the rear toggle 'ducktail'...

First is a 1900AE, very pronounced impact area, you can actually feel the depression with your fingernail...Indicative of many years of 'hot' load hammering (or a failed mainspring * )...

Second is a 1937 S/42 [Mauser] with what I consider 'normal' wear...

Third is a refinished commercial which was fired only 10 - 15 times w/'target' loads following the re-blue...

If your frame is close to my second frame then I would not be too concerned about firing Winchester White Box 'target' ammunition in it...

* 1900's have a flat 2-piece mainspring