Unfortunately that is correct. I have a couple left over from years ago. Even trying to get them back to near original isn't cheap anymore.
I last bought a barreled receiver at the LGS, 1909 Argentine original barrel to receiver. It was $100. Took the barrel off and found it had lug setback. Well, that's disappointing. I'm trying to find a way to fix it without costing a ridiculous amount.
I've done only a couple of them, far from an expert... Kuhnhausen's book is pretty much the "bible" for those working on Mausers.
Lug setback (more than a couple thousandths) is usually considered a no-go. Mauser receivers were case-hardened, and with little QC the depth of the hardening varies greatly among receivers. Setback on the lugs/receivers could be completely through the hardening, or far enough to severely compromise the strength of the receiver. If that's the case and the receiver is rebarreled, continued setback and increase in headspace could be very rapid (and dangerous).
I believe some receivers like this can be machined, and then professionally re-heat treated, but then you're getting into "costing a ridiculous amount".
Yeah, I have his book as well so I'm familiar with the subject. I just haven't found a way to do it myself yet. It would be an awful lot of lapping with a bolt. I've been in contact with Blanchard too.
I just don't like being out $100 on a receiver I can't use. Though that is the risk with such things.
I've got a few of them and love them. Mausers used to go for next to nothing, so about half of the hundred million got "customized" in one form or another. My two favorite VZ-24's are in 6-.284 and 7x57. But, I've had them in .243, 6mm Rem, .257 Rob., .260 Rem, 7mm-08, .308, 30-06, 7.65 argentino, .303-06 (Argy punched out to 30-06), 8x57, 8mm-06 .338x57, .338-06, .35 Whelan, 9.3x57 and 9.3x62.
The VZ-24 had very good metalurgy and if not seriously pitted will hold any case that will produce up to 55k psi without issue. The quality control in interwar Czechoslovakia was outstanding. They were very anal about that. As much as the Germans were.