I just picked up a Hoch actioned rifle , I purchased the rifle because it came with a 25x Lyman scope.
The rifle was advertised as a 357 mag , I had planned to rebarrel but I thought I would play around with it first so I checked the twist and discovered the groove dia. was .376 . The rifle came with one case and one bullet the case is a 357 mag the bullet is .377 . I have not done a chamber cast yet but a 357 max case is a good fit .

Wondering if anyone here has tried breech seating a .376 bullet using a 357 mag or max case to hold the powder?   

Dales

Dealer sold rifle on consignment so I do not know who the owner was .
No breech seater but the one bullet that came with the rifle looks like it is a gas check design and fits into the 357 case like a heel bullet . 
357 max case fits only into the chamber but I will do a cast before shooting it.

Will try to post pic.
Dale

Frank
The barrel is an eight groove 1 in 12 twist.
I do not think a rod will work from the chamber end, with the stock now on it.
I do not think that a thumb hole stock is allowed in ASSRA matches so I am not sure what type of shooting it was built for .  I have trouble with a 12lb rifle these days .

The dealer was in North East pa.(just over the NY border) so it may have seen use in my area as I shoot  in the Western NY Schuetzen Matches I will have to ask around next season . 

Dale

Seems like a modernization of the old .38 Extra Long Centerfire.  That had a long case the diameter of the bullet (around 0.379" if I recall) and a heel and outside lubrication on the bullet like a .22 rimfire.

It wasn't thought of as a target cartridge in the old days, but the previous owner of your rifle must have made it work, to some extent, judging from the appearance of the rifle.

Too bad you didn't get the mould that went with it.  However, one of the custom makers should be able to make a copy from your example.

That is very different. There is no reason that you can't use the Max case to shoot it but, you can get some 5.6x50R cases and cut them to what ever length you want.

I would use a case length that is .03 short of the .376 groove diameter. That would make it similar to a standard case length when BSed. I would also chamfer the mouth out to almost the edge of the outside of the brass. My reasoning for that is, so that the powder gases have full contact with the bullet base. I don't know if it would make a difference but, it seems logical to me

I use 13.5 gr of #9 for my 33 ELCO Max and have tried charges as high as 15 gr, so, I think that would be a very safe starting point for your much larger bore. I think that you'll probably get up to around 15 gr before you'll get 1400+ fps.

What NEI mold do you have for it? I have the old 290 gr spitzer (casts 295 in 20/1), it looks like this:

Frank

You might take a look at AccurateMolds on-line catalogue of bullets. He  might have just the one like the ones that came with it, or close enough to have him modify one to fit.


ASSRA rules do not allow thumbhole stocks,   However on at least one occasion that I am aware of,  schuetzen-meisters have permitted it- IF the thumbhole is taped over or plugged so that it is non-functional.

I have seen a rifle like the one pictured if not the same one
Tom Manno (deceased) let me borrow it to shoot some matches with it...the chamber was set up to use a GC bullet as a heel bullet...mostly for  OH shooting  IIRC,..was a long time ago
I never did shoot it....was not my cup of tea....HTH