I have been thinking about it and I’m curious if anyone here has rebarreled a pachmayr dominator?

It would be pretty cool for a 6.5 grendel

Yes.  Off with the 7TCU, on with the 204 Ruger.

Tony Rumore
Tromix

How rough is the process ?

I had to make a tool to grip the barrel in order to unscrew it.
Then machined a new barrel and screwed it on.  Pretty straightforward.

Tony

For you younger guys, I'll give you some history on the Dominator 1911 conversion.

It came out around 1984 and was first written up by Bob Milek Sr in Guns & Ammo magazine.  I doubt Pachmayr actually manufactured the thing, but it was a single shot bolt-action conversion unit for 1911 pistol frames.
It bolts onto the frame using a screw passing upward through the pistol grip. Back in '84, handgun silhouette shooting was fairly popular as was hunting with single shot "hand-rifles" as many called them at the time.
The conversions were made in many calibers including .308, 7-08, 357 Maximum, 243 Win, 44 Rem Mag, 30-30, 35 Remington, .223, 7mmTCU, 22 Hornet, 7mmBR, and 375 Super Mag.  It was also fairly popular to rebarrel them in alternate calibers.
They were available with both scope mounts and iron sights.

Below are some pics of a Dominator mounted on a RIA frame, chambered in 375 Super Mag.

Tony

ETA - Since it's a bolt action and you don't have a slide slamming back and forth, you can tune the 1911 trigger down to about 1 pound if you want.  You don't need a fast reset either.

I always wanted one of those.

Correct me if i am wrong,but didn't Springfield Armory have similar setup in the late 80's.A single shot on a 1911 frame. I don't recall what it was named.

Yes they did. Had one in 308 but don't remember the name. The 1911 frame is not fun to shoot with that set up.

ETA.   https://gunvalues.gundigest.com/springfield-armory-inc/12868/model-1911-a2-s-a-s-s/