How far would it be necessary to set the barrel back in order for a .300 H&H reamer to clean up a .300 Win Mag chamber?

Don't ask me why would you want to, the question is, at this time, merely academic.

TWO inches.
300 WM shoulder OD is .490. Base of both is .512. The 300 HH gets to .490 at just .720 from the base; being extremely tapered.
Not something anyone would do. Unless you want two shoulders. It would still fire standard 300 H&H ammp; just look funny.

Just stamp the barrel "300 H&H improved short".

John

quote:

Originally posted by dpcd:
TWO inches.
300 WM shoulder OD is .490. Base of both is .512. The 300 HH gets to .490 at just .720 from the base; being extremely tapered.
Not something anyone would do. Unless you want two shoulders. It would still fire standard 300 H&H ammp; just look funny.

With two shoulders, would it not resemble the Herters Ram Magnum cartridges (I think they? As you may recall, the Herters Ram magnum rewrote the rules of internal ballistics. Perhaps the 300 W&H could do the same. Regards, Bill

quote:

Originally posted by Bill Leeper:

quote:

Originally posted by dpcd:
TWO inches.
300 WM shoulder OD is .490. Base of both is .512. The 300 HH gets to .490 at just .720 from the base; being extremely tapered.
Not something anyone would do. Unless you want two shoulders. It would still fire standard 300 H&H ammp; just look funny.

With two shoulders, would it not resemble the Herters Ram Magnum cartridges (I think they? As you may recall, the Herters Ram magnum rewrote the rules of internal ballistics. Perhaps the 300 W&H could do the same. Regards, Bill

One would certainly want a stepped barrel to go along with the stepped chamber in such a cartridge.

Actually, I really liked the look of the stepped barrels of the original military Mausers and the Browning Safari series. Anybody know if there was a rationale behind the stepped barrels other than cosmetics?

Yes, I have patterns of both the 1930 Oberndorf and the 1908 Rigby, from which I have Douglas make them. The original intent of the steps, as well as the ones in the military barrels, was to dampen vibrations. I might have read that somewhere. Sounds good though.
As for Herters; I used to order all kinds of stuff from them in the 60s and early 70s. Model J9 and U9,($65 for the barreled actions) barreled actions was what I started making rifles on. With Fajen stocks, later Richards. I don't remember the Ram though.

quote:

Originally posted by Stonecreek:
Actually, I really liked the look of the stepped barrels of the original military Mausers and the Browning Safari series. Anybody know if there was a rationale behind the stepped barrels other than cosmetics?

There were no aesthetic purposes, the steps were patented for thermal expansion.

https://patents.google.com/pat...1768A/en?oq=US451768

quote:

Originally posted by dpcd:
Yes, I have patterns of both the 1930 Oberndorf and the 1908 Rigby, from which I have Douglas make them. The original intent of the steps, as well as the ones in the military barrels, was to dampen vibrations. I might have read that somewhere. Sounds good though.
As for Herters; I used to order all kinds of stuff from them in the 60s and early 70s. Model J9 and U9,($65 for the barreled actions) barreled actions was what I started making rifles on. With Fajen stocks, later Richards. I don't remember the Ram though.

You needed to have the Herters reloading manual to get the scoop on the Herters Ram Magnums. Jaques P. Herter, I believe it was, was the brain behind these developments. I don't know what happened to my copy, but it was pure entertainment. I would not have wanted to rely on it for loading data. Bill

quote:

Jaques P. Herter, I believe it was, was the brain behind these developments.

It seems that Jacques, who has been alleged to have been fictitious, was actually George's son, but it was George who did all of the writing. Exactly why George thought listing Jacques as the author was helpful to his marketing isn't clear. To say that George was eccentric might be an understatement -- but he made shooting and reloading accessories much more affordable to youngsters like me, although it took a lot of patent infringements to do it.

A real person often listed as a relative of George's was Christian Herter, a governor of Massachusetts and Secretary of State. However, I can't find anything on the internet linking the two very different persons.

By the way, there is a clinical psychologist practicing in Casper, Wyoming by the name of Jacques P. Herter. References list him as being 80 years old, which would just about fit the son of George Leonard Herter. If he is George's son and a psychologist it would be fascinating to hear his take on his dad.

Great info in that patent; thanks for posting that.