Odd Contender Barrel

[nannyhammer]

Any of you know any thing about a 9MM Mag 9 x 33 chambering for a Contender? Brother picked one up as part of a deal and I can't find any info on it. I've emailed Van Horn since his name is on the barrel but was curious if anyone else could provide info on the chambering.

[Markopolo]

wow... never heard of it... wildcat for sure.

[TheGrimReaper]

https://en.m.wikipedia.org/wiki/9mm_Winchester_Magnum
Says 9x29 but in a contender?

[nannyhammer]

Yes it's in a contender. Barrel is marked:
D A Van Horn
9MM Mag 9 x 33

[Tatume]

https://en.m.wikipedia.org/wiki/9mm_Winchester_Magnum

"... developed by Winchester in the late 1970s. The cartridge was developed to duplicate the performance of the .357 S&W Magnum in an auto-pistol cartridge. The first handgun which chambered the cartridge was the Wildey pistol. Since then, Thompson/Center has produced barrels chambered for this cartridge ..."

[Mr_Sheesh]

Probably not https://www.cartridgecollector.net/9-x-33-trainer-112mm-apilas-rocket ?

[GARD72977]

https://en.m.wikipedia.org/wiki/9mm_Winchester_Magnum
Says 9x29 but in a contender?

How could a 9x29be a 9x33?

[nannyhammer]

283278


Bottom barrel in pic

[TimD]

Is it straight walled?

If not maybe it is a 7.92×33mm Kurz necked up to 9mm ???

https://en.wikipedia.org/wiki/7.92×33mm_Kurz

[Mk42gunner]

Sounds like time to do a chamber cast to find out just what it is *.

Then decide if custom dies are needed or if there is a work around to use what you or your brother have.

Robert

* A wise thing to do with any wildcat that doesn't come with dies.

[Earlwb]

well, there is a military cartridge that is a 9x33 size. it is a bottleneck cartridge too. It appears that Lapua made it for the French as a sub caliber training round. electrically primed.
ref: https://militarycartridges.com/category/133-9mm-x-33mm-sub-calibre/

[LAGS]

Would that barrel be from Dave Van Horn in Gilbert AZ.
He has done a couple of barrels for me and some machining on parts for me since I left my lathe in California

[nannyhammer]

I think it was made by Dave Van Horn. Sent him an email yesterday but haven't gotten a response. Starting to think maybe it was a 9MM Winchester Mag but was lengthened for specific loads.

[charlie b]

Does it look like a straight wall chamber or a bottleneck?

[nannyhammer]

Looks to be straight walled.

[kenton]

How could a 9x29be a 9x33?

Marketing?