they dont have a name yet...call them the AMERICAN line of carts, call them newtons but the casehead of the ruger and the newton is so similar you can use newton dies and reamers to make 35 and 30 versions of the ruger-newton.

white bison was kind enough to send me cases he formed in 35, 30 and 280 newton. he made 35 newton cases using newton dies and ruger brass. what we have here is pretty much a new line of carts. later i will show you a pic of an original 35 newton and 35 newtonized 375 ruger case...visualy identical. he trimmed them at 2.5" like the newton line not 2.58 like the ruger.





the newton has more taper and a shalower sholder for excelent feeding...

so if you want a classic cart or a new one depending on how you look at it...this is interesting and fairly cheap. if you want to go custom you can do the other more exotic newtons but custom dies and reamers will be needed. the 338 (albeit newton only made a 333 not the 338) and 6.5 come to mind.

but as is, awesome 35 and 30 newton performance and cheap good ruger brass is a tempting combo

oh yeah...no belts or rebates

any additions white bison?

Thanks for the post...you might put a photo (I don't know how to do it yet!) in Wildcat thread.
Well, my only input is there is a lot of inaccurate data on cartridge dimensions.
With all the blather about the .375 Ruger...I bought a box of 20 to measure...the base or head diameter
measures 0.529", not 0.532" as claimed. The shoulder measures 0.512".
Now the Newton drawings you list are fair...but by measuring my original Newton Arms Co. brass cartridge I get
0.5275" of the head (not the rim)and 0.510" at the shoulder...very small differences to be sure, but makes a
difference when sizing the .375 Ruger to a Newton...now when Western made the Newton brass...they did go to
0.525" at the head, rim was perhaps .001" less or 0.524", or near the same.
The point being as I said before, dimensional drawings of vintage cartridges are suspect. Better to measure
them yourself...and even the new .375 Ruger was slightly different when measured from the data promulgated.
But what is fine & good...the .375 Ruger makes a great parent (beltless case) to form .30,.35,.375,.416 Newtons!
I used my .375 Ruger brass to make up my .416 Newton brass very easily, sized it up in a .416 Newton die, trimmed it to 2.50"...voila! New .416 Newton brass for my .416 Newton. It should also make very easily, nice .35 Newton brass similarly...and...could make a .375 Newton with a 2.5" case length. I'd bet dollars to doughnuts, you could get same as .375 Ruger performance (factory) with the .375 Newton in a shorter (2.5") case with good powder
selection. You might run slighly higher pressures to get it...but still, the idea is the shorter case, easy
feeding, shorter action. To me, it would be more desireable than a .375 Ruger. And then, go whole hog & make a .416 Newton like I did which duplicates a .416 Taylor without a belt! And a better case too.
Aloha,
Tom

ps. Your dimensional drawings were pretty close...
as far as actual meaurements of original cases...the length of both Newton Arms Co. & Western Brass measure exactly 2.50" long. The head diameter (not rim) measures 0.275" on the Newton Arms case, 0.525" on the Western case.
Those were differences found from measuring original Newton cases. But as I say pretty close,
it leads question as to why the drawings aren't exact though?!
Best Regards,
Tom

ps. meant to say 0.5275" inches, not .275", slip of the typo
Tom

Another thought..I know Harry McGowen of McGowen
Rifle Barrels can chamber a .35 Newton...then you have Jamison also making new .35 Brass soon, or can size down the .375 Ruger cases easily to .35 Newton. The only drawback, though minor to me...may be of consideration is that probably reloading dies for .35 Newton would be in the high priced division...not "standard" prices.
Then a .35 Newton would be performance same as a
.358 Norma Magnum, sans belt.
Best regards,
Tom

I should make a comment on "why" I am such a
Newton cartridge advocate...I kinda accidentally
found an original Newton Rifle...one thing led to another including a friendship with Bruce Jennings who wrote the "Newton" Book & foremost expert on Newton. Well, my quest led to the discovery that I had overlooked the very fine Newton cartidge designs...and having some 50 odd years of gun playing, thought if I had missed out with my experience...how many others also had missed out on recognizing the Newton cartridges? So, at the risk of being a "medium
bore"...try to bring the subject to light for others.
Best Regards,
Tom

yeah, its teetering between wildcat and medium bore i agree...

i need to get my camera back from a friend and i will post pics...

also what i think is a kindofa neet idea because of the .529 readings of the 375 ruger casehead and chamber slop is to shorten the ruger dies to form cases 2.17" and make a short action 375 ruger by chambering to the depth 2.17" as well. the shoulder of the ruger is .515" so that means it has 13 thou body taper over its .21797 body length or approx 6 thou per inch of body and by shortening it by .41" that is losing 3 thou in body taper giving it the measured .529" casehead...so if my math is not "fuzzy" and my dimensions hold up this is a doable project with soon to be avaliable dies and reamers. it will have the same capacity as the wsm's and have a proper headstamp...well kinda. load it to get old school 375 h+h velocities. and have fun in a super light weight compact handy rifle. call it the 375 ruger short.

I think the .30 Newton (.35 Newton too) case is a great design...
it was suggested by Fred Adolf who was probably the most gifted American Gunsmith. There was one of his double rifles of exqusitive workmanship & quality the Reno Safari Club Major Event a year or two ago, on loan from a Museum that was one of the Stars of the show...Fred Adolf's idea of a great cartridge turned out to become the .30 Newton. As you know its a very 'modern' case..as little body taper, good volume to stuff lots of powder,
and nicely short...only a 2.50" case! Yet performs, due to the larger diameter giving good capacity. In yesteryear, such gun luminarys such as P.O. Ackley, Gipson, Neidner & Fred Barnes, founder of Barnes Bullets all used the Newton cases to make wildcats from...also used the standard Newton cartridges.
It behooves us to learn & pay attention to the old guys...not everything new is automatically good, nor is everything old not worthy of consideration. Got to be honest with ourselves, savvy & discerning..otherwise fooling ourselves.
The .375 Ruger from my measurements is pretty much a .30 Newton body size in diameters, the neck further foward to a longer length...and longer case. The .375 Ruger is not exactly a .35 Newton necked up to .375...since the shoulder is further forward...but the same chubby body to hold lots of powder...so its simple as can be to run a .375 Ruger though a Newton die & come up with an exact Newton, .35 Newton or .416 Newton, even .30 Newton if careful & maybe neck thinning needed for the .30
Newton.
So much of good stuff, like the Newtons get relegated to history..which is a shame, really. The "Flavor of the Month" new designs are mostly lacking...made mostly to stir guys up & sell. Although I agree with the .375 Ruger as a good design.
Still, neck up a .35 Newton to .375 & its the same performance
in a slightly shorter, but neater 2.50" case.
Anyway, I think my points are made witthout over blabbing the case. (No pun intended!)
Best Regards,
Tom

i think of the 35 newton as a 35 whelen with cahones...and its AMERICAN

the 35 whelen's twin is the 9,3x62, the 35 newtons twin is the 9,3x64...

granted the 62 has a tad more power than the whelen but the 35 newton has more power than the 64...

using ruger brass (a buck a piece!) it will out perform the 358 norma.

there is 6 thou diff in diameter or one sheet of paper between them. the 9,3 gets lauded for its d.g. legality but if i am hunting d.g. i want a true big bore, not a medium bore. the game wont know the diff and at that point it is more velocity, bullet construction and bullet placement. what the 9,3 can do the 35 can do. the 9,3 is not "magic" and neither is the 35 but they are twins of a diff continent. i think the 35 is better for the range of bullet weights imho. the 35 newton is good for moose and bear on down to prarie dogs and dik-dik (try and do prarie dogs with a 9,3!)

in the latest Rifle Rifle magazine there is references to the newton line and the 375 ruger...scovil comments about everything old is new again and in another indepth article on the 375 ruger cart and gun the author wries rifle loonies compare them...is he saying scovill is an idiot in the same issue of the same mag???

anyway they showed the cross section of the newton and what was interesting is the thick webbing of the newton case...it would make the 35 on par with the norma. but here is the good part...if you use the ruger brass to form newtons you gain in capacity over the original newtons!

Hi: Dave Scoville is mostly correct in his
general view...the body size of the .30 or .35 Newton is near identical in diameters to the .375 Ruger...and the old saw: "What's old is new again"
is an appropriate comment.
My comparison of the .35 Newton is that it is very much like a .358 Norma Magnum without the belt.
In performance very similar, and no flies on either the .35 Newton nor .358 Norma Magnum. They do sail out with good, flat trajectories with 250 gr., .35 cal. bullets. Very effective at any range!
Best Regards,
Tom