Look out! It's a newbie with carbine problems!

[Harlan (Deceased)]

There's not a lot of people spending money to upgrade IJ's so the aftermarket companies haven't made barrels for them.

I hope it indexes properly. Regardless it's yours now for sure. Good luck!

[feets]

It should index properly. I took lots of measurements from both barrels and the receiver before cutting. I trimmed enough of the skirt to turn the barrel into the receiver one revolution and measured the results. A couple different web sites offer services to rebarrel the carbines with a mention of having to remove the skirt for Plainfield receivers. They also caution against attempting to do work on Universals.
As it sits, I've nearly got it screwed in fully. it's less than 10 degrees off. Before I remove any more metal, I'll pull the barrel again and clean the threads once more to be sure there are no chips or gritty bits interfering with the threads.

[Tired Retired]

Feets, looks like you have a good detailed comprehension of how to maximize your project gun. I am really curious as how this is going to turn out.

No one here will ever have any doubt about your machinist and gunsmithing skills

(its your sanity that is in question!)

[feets]

Appreciating my skills my be over stepping a wee bit. Recognizing my stubbornness may be more appropriate.

My sanity has never been in question. I have no sanity and there have never been any questions about that.