I am looking at a nice Sauer drilling with scope in 16/8X57JR. It is slightly loose on the pin. It has caps over the pin that were originally intended to permit the pin to be replaced.

(1) does anyone replace pins any more, and if so who, and

(2) whom would you recommend to tighten up the gun?

J J Perodeau is the man for the job.

He has moved his shop from Champlin Arms to his property on the lake.
He has worked on my doubles and my drillings.

His work is excellent.

I still replace hinge pins. It depends upon the gun but it is usually the best solution.

I've used New England Custom Guns with complete satisfaction. Having been established by Dietrich Apel they sort of cater to German firearms.

if you remove the caps and then the open and rotate the pine by 180 degrees there may be enough new metal to tighten the action?