Another 1911 Slide Stop Question

[schmeky]

The slide pin hole in a 1911 frame can vary to a small degree. Is there an advantage, or a need, to gauge the hole in the frame and install the "correct" pin with the optimal O.D.?

I have pin gauge set and have a 1911 hard fit barrel to install. I'm thinking of starting this one with a snug, but proper slide stop fit. Even though downward compressive forces will keep the pin seated in the frames pin "bed", I feel a proper fit could reduce uneven stresses or potential wear on the frame.

Or am I over analyzing this?

 

[1911Tuner]

Howdy schmecky.

While you don't want a slidestop crosspin sloppy loose in the frame hole, you don't want it to be snug, either. It has to move freely in order to engage and stop the slide reliably.

Too much difference between the pin OD and the hole ID, and the pin hammers the forward radius of the hole when the slide/barrel assembly comes to a stop going to battery. I like to see about .003 inch of difference, but many factory built guns have twice that much without causing problems for a long time. Incidentally, that's another reason why it's not a good idea to let the slide slam home on an empty gun.

 

[schmeky]

Thanx Tuner,

By "snug" and proper clearances, I understand the stop must have sufficient clearances to allow it to pivot freely. I was thinking of a .0015" - .002", but if you suggest .003", I'll check to ensure this is the case.