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In comparing the "Before" and "After" chamber dimensions, I'm just curious how reaming out the chamber to .450 BPE could accomplish REDUCING the diameter of the chamber at the case mouth from .490" to .479", REDUCING the chamber diameter in front of the rim from .550" to .545", and also REDUCING the rim thickness from .060" to .040"

A reamer that deposits metal in addition to removing it is indeed a remarkable thing!


A true sign of mental illness is any gun owner who would vote for an Anti-Gunner like Joe Biden.

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Shotgunjones,
The gun was made before the "Mall Mart" and "Interior Net" came about, and many makers made their own reamers as well as loading the ammo for the rifles they built. This more or less insured repeat ammo sales. We complain now that many of these old rifles are not marked as to the cartridge it used. The one that made it knew what it shot, so the owner had to go back to him for ammo. It wasn't until the 1939 Proof law that German guns had to be marked by the common name of the cartridge it used.
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Originally Posted by Der Ami
buckstix,
See the comments I already wrote on the GGCA forum. At the time, I didn't know you already had 3 450 BPE's. You are still entitled to do it; but "Aw man", you could have had an 11.6x82R, there are da-n few people that have one. Mike
Hello Der Ami,
Thanks for the reply.

I still have an 11.6x82R x 16ga Cape Gun. Its just able to shoot cartridges made from standard brass ... Since there were are no caliber markings anywhere to be found, it really didn't make an difference. Here's a test target ... I couldn't have done this without the "chamber improvement" ... see below ... smile


Originally Posted by Shotgunjones
A practical solution, and if it pleases the owner so be it.
I would have been inclined to modify a few cases instead of the rifle.
I've been following this with the question about why this caliber was created in the first place.
Is it because no self respecting Austrian would build a rifle for a British caliber?
Is it to prevent the .450 from being chambered due to load/pressure differences? Or bullet weight/type?
Was it to comply with some kind of legislation?
Perhaps to control ammunition supply to the maker or country?
Is this lost to history someplace or does anyone know?
Hello Shotgunjones,
Thanks for the reply.

After ruining a dozen 450 bpe cases in an attempt to make just one 11.6x82R case, I called Dave at CH$D - 2years to get form and load dies.

As to the original cartridge, the following is from lancaster on a different forum ...

" .... this is the german-austrian version of the 450 3 1/4 BPE - the case follow the measurements of the older 450 BPE with coiled case http://old.municion.org/450/450Boxer.htm - [Linked Image from up.picr.de] - there you see it the conical base with a long cylindrical body follow this old cartridge. ... "

So it seams that later, the brass cases were made in the same shape to fit those early chambers.
.
.

[Linked Image from buckstix.com]

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All very interesting and thank you all for the explanation and education.

It certainly does shoot.


"The price of good shotgunnery is constant practice" - Fred Kimble
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Originally Posted by keith
In comparing the "Before" and "After" chamber dimensions, I'm just curious how reaming out the chamber to .450 BPE could accomplish REDUCING the diameter of the chamber at the case mouth from .490" to .479", REDUCING the chamber diameter in front of the rim from .550" to .545", and also REDUCING the rim thickness from .060" to .040"

A reamer that deposits metal in addition to removing it is indeed a remarkable thing!
Hello keith,
Thanks for the reply.
The illustration is an overlap using an existing 450bpe cartridge drawing - to merely illustrate the removal of the sweeping taper in the center of the existing chamber. Fortunately the rental reamer was also a "put-on" tool. wink

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buckstix,
Since you are going to play with a lot of different rifles, it seems like it would be worthwhile for you to buy a lathe, if you don't already have one. If a 45-70 seating die( w/o stem) wouldn't work to get 450 cases to chamber, you could make a simple ring die to do it. You need one anyway for rims. I believe a lathe( and mill) is a requirement of life. Like doing what you want with your own rifle, you are entitled to decide for yourself whether you want a lathe or not.
Mike

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Originally Posted by Der Ami
buckstix,
Since you are going to play with a lot of different rifles, it seems like it would be worthwhile for you to buy a lathe, if you don't already have one. If a 45-70 seating die( w/o stem) wouldn't work to get 450 cases to chamber, you could make a simple ring die to do it. You need one anyway for rims. I believe a lathe( and mill) is a requirement of life. Like doing what you want with your own rifle, you are entitled to decide for yourself whether you want a lathe or not.
Mike
Hello Der Ami,
Thanks for the reply.

I have a lathe, a milling machine, a tool post grinder, a drill press, etc. etc. I'm a retired gunsmith/machinist/design engineer. I've made many innovative reloading tools for obscure calibers, but for this 11.6x82r Cape Gun, it just wasn't feasible. I chose a very simple solution, because I'd rather be shooting this gun, instead of wasting a lot of needless effort to preserve a long obsolete caliber.

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Well shoot, I wasted a lot of advice on someone I should have been listening to. Do you happen to have an extra steady rest or follower rest for a Clausing 5900?
Mike

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Originally Posted by Der Ami
Well shoot, I wasted a lot of advice on someone I should have been listening to. Do you happen to have an extra steady rest or follower rest for a Clausing 5900?
Mike
Hello Der Ami,
Thanks for the reply.

I don't own a steady rest. I designed and built a special very sophisticated set-up for off-hand shooting my Big Bore Bolt Action and Double Rifles. Here's a picture of me shooting my 700 Nitro Express.

and also a you tube video ...

[Linked Image from buckstix.com]



[Linked Image from buckstix.com]

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I have a boat cushion just like that one I use to shoot across the hood of my car...Geo

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