Many of the custom makers now routinely send their Military Mauser actions used for custom work to be re- heat treated.
There are a couple of companies they trust to do the work and have done so for quite a few years. Blanchards Heat Treating (?) is one. Can't recall others.
They don't seem to pick and choose,,they just send them in to be redone. It's not that expensive and for what they are producing , the prices charged and the liability they are incurring,,it's proabably a good step for them.
A few of the Models seem to have a history of being 'soft' or better said showing lug set back. Sometimes in their orig chamberings. Often after being rebbl'd to a cartridge that ranges a bit out of the range of psi of the original..
The Brazilain '08 are always suspect in that respect as are the beautiful early Peruvian 98's.
VZ's are usually fine. Many will shy away from lateWW2 mfg 98's of have them re-done. Some of that thinking may be just because the reHT is so available now and not so much a mystery as it once was.
I've seen German mfg Argentine 98 with bolt lug set back. Others never give a problem.
Not knowing the history of the particular action/rifle that it came from, you can never be sure what the metal went through.
Fires especially, then rearsenalled. They can look just fine.
I've got a Columbian 98 here now to put back into some resemblence of orig Military configuration from it's sporterized look.
The action has 6 drilled and tapped holes in it that I plugged already. The crest is worn and the metal lightly pitted.
It's one that was rechambered or rebbl'd to 30-06. The orig's were in the 7.65 Belgian Mauser caliber.
When I pulled the bbl I was met with the H cut in the abutment of the recv'r meaning this was a post ww2 mfg FN.
So the rifle was likey built as a 30-06 for Columbia when we freely gifted tons of GI ammo to those countrys in attempts to win their friendships.
As 'soft' recv'r, by that I mean it cuts with a file,,no case hardening. But that is what the Post War 98 recv's are.
BUT no lug set back onside at all.,,and these saw use with M2 GI ball ammo.
I think you'll be just fine with the FMAP Argentine 98 in it's orig caliber or rechambered to 30-06.
IF the rear recv'r ring is hand stamped with a '.30' and there is a radius cut out on the rear of the front ring over the loading port,,then the rifle/carbine has been rechambered for 30-06 caliber.
The radius cut need to allow 5 shot stripper clip ammo to clear the front ring when being loaded.
