Anyone have experience with this round?
The rifle looks very interesting.
https://www.gunsinternational....cfm?gun_id=101476672

In Ackley Vol. 2 he says it's a more modern & efficient cartridge than the 375 H&H better adapted for standard actions. A 235 gr. at 2771fps with 75gr 4350, a 270 gr at 2706 to 2760 fps with 68 to 70 gr 4064, & a 300 gr. from 2463 to 2570 with 62 to 67 gr. 4064.

The listing says it is a 338 WM necked to 375 caliber.

What this has right and lots of people don’t know is that the Newton case was about .530” at the case head and NOT made from 8x68 case as many have said before.

Interesting - I never knew that Chatfield-Taylor called his cartridges belted Newton’s when he developed them. One certainty is that case is not Newton’s case design which itself was based on the 11.2x72 Schuler.

https://en.m.wikipedia.org/wiki/.30_Newton



These numbers don’t jive.




The western cases I have are .529” case head diameter.

the 375 belted Newton isn't the 375 chatfield-Taylor, a claim Ive never heard of before...Somethings amiss here Im thinking...

Such wildcats have absolutely nothing on the 375 H&H or the 375 Ruger. As much as I always liked the 375 and 416 CTs. the Ruger and the H&H killed them off, The only difference in men and boys is the cost of mens toys fits the wildcat agenda, and I did my share of playing with them so I was as guilty as the next guy in days gone by....

Gotta agree with Ray here. I've got a really neat rifle that has been in my safe for years now and I've never shot it because is in a wildcat. And I don't reload anymore, so I'm thinking of re-chambering to something with factory available ammunition. Unfortunately, it's kind of an odd ball and I may need to rebarrel too. Or, I could just sell it to the next guy that sees a pretty rifle in an unavailable caliber.

Pardon a little thread drift here but years ago I worked with a guy who was a serious old classic and wildcat guy. He was always talking about the next rifle he was going to build for some long obsolete cartridge. I got to shoot quite a few of them. One I remember distinctly was a .30 belted Newton. It was the first .300 magnum anything I had ever shot. Unfortunately I don't remember any details of the cartridge.

quote:

Originally posted by pacecars:
Anyone have experience with this round?
The rifle looks very interesting.
https://www.gunsinternational....cfm?gun_id=101476672

I had one built about 1987 on an FN Mauser .30-06 from Herters.
It was disappointing, about 5 grains smaller case capacity than the .375 H&H.
My ".375 Taylor" got re-whittled into a .500 Bateleur eventually:



The concept of the "Belted Newton" case got ginned up in the 1950's by Fred Huntington of RCBS,
after Western Cartridge company quit making the .30 Newton and .35 Newton cartridges and cases for handloaders.
It was meant to be merely a facismile of a substitute for the Newton brass,
just a name for the .338 Winchester Magnum necked down and necked up,
or .300 H&H or .375 H&H brass more extensively reshaped.
This required a custom chamber or a re-barreling of any old .30-06 length rifle,
and purchase of dies from Fred Huntington.

Robert Chatfield-Taylor had a .30-06 M70 converted to ".30 Belted Newton" by G&H about 1959.
He was so enamored of it that he dreamed up his own .375 Belted Newton circa 1961.
He used .338 Winchester Magnum brass to form his case.
Do a search on this forum and you might eventually find a discussion about the differences in two cartridges,
the so-called .375 Chatfield-Taylor and the so-called .375/.338 Winchester Magnum.
Calling it the .375 Belted Newton fell out of vogue, even though Taylor started off calling it that himself.
Other wildcatters were probably making .375/.338 Winchester Magnum rifles as soon as the .338 Winchester Magnum appeared.

Thanks to boom stick for the 11.2x72mm Schuler drawing, definitely not the basis for any Newton cartridges.
The 8x68mm S is also a poor starting point for Newton brass forming, due to the rebated rim.
Note that the most consistent base diameter cited for Newton brass is 0.522" above the extractor groove, 0.525" rim diameter.
The .375 Ruger is bigger.

From the RCBS Cartridge Designer tool:



From Dave Scovill's article about the .375 Ruger in RIFLE #229, Jan-Feb 2007, pg. 6: