35-40 Maynard

[Marlin Junky]

What are the dimensions on a 35-40 Maynard?

Sisk's website indicates they have reamers available and RCBS makes the dies but I don't understand what a Group I (cap i) die is... can someone please explain?

MJ

[Baron von Trollwhack]

RCBS has die groupings by cost. Group "I" dies cost more than group "A" dies. 30-30 dies cost more than dies for obsolete Maynard cartridges.

[STP]

Which version?? The 1865 and 1873 versions won`t necessarily match, dimension-wise. I learned this by my research on an early 1865 35-30 with the tape priming feature that I have the luxury to see on occasion...some day it will be mine to enjoy.
My filing system sucks, if I can find my King`s Cartridges of the Maynard by Richard D. King, I`ll let you know. Otherwise, you can ask Floodgate...a most helpful resource.
I recently found amongst my Gun Report magazines in the June-July 1960 issue another good article and photo`s of the early Maynard variations of cartridges by Graham Burnside, but, no dimensions. Old paper is helpful only when we can find it. (Sigh)
Why would dies be needed for the 35-40? It`s a straightwall case that needs no such altering to load. An M-die maybe....to carefully open the neck for the easy insertion of the next boolit.
Tell us about your 35-40..an original Maynard? Do tell.....

[Marlin Junky]

Which version??


1882. I don't own one, I was thinking about rechambering a .357 H-R to 35-40 if it can easily be made from 30-30 or similar brass.

MJ

[Scrounger]

1882. I don't own one, I was thinking about rechambering a .357 H-R to 35-40 if it can easily be made from 30-30 or similar brass.

MJ

Give a look to the .358 JDJ, easily made from .444 Marlin brass. Ballistics about like the .358 Winchester. And here's a Handi in .280 Remington at a good price: http://www.auctionarms.com/Search/DisplayItem.cfm?ItemNum=7987019

[Ross]

A parent case with a .403" base will be hard to find. The nominal .405" .41 Long Colt is far too short.
I do not know what Buffalo uses for a parent case, but they call for an RCBS #21 (.303 Savage) shellholder.
Cheers from Darkest California,
Ross
I got that .403" from Frost, which has huge accuracy issues.

Edit: See correction below.

[Marlin Junky]

I got that .403" from Frost, which has huge accuracy issues.

Can you elaborate? I don't understand.

Maybe I'll do a .357 SuperMag, a 35-30 Winchester or a .357 Herrett. Does anyone have a dimensional drawing of the 35-30 Winchester that they can post?

MJ

[Ross]

MJ,
Sorry, I'm in my own little world here, and suffer from CRS.
It is Mack, not Frost.

Cartridge Case Measurements
Arthur J. Mack
Copyright © 1989 by Dr. Arthur J. Mack
Published by AMREX Enterprises
P.O. Box 745
Vienna, VA 22183
U.S.A.

The late Dr. Mack died before the work had been adequately edited, it is not even paginated, and the family declined making changes. Nevertheless it is hugely helpful.
I used the chapter on bullet diameters and the one on head diameters.
Cheers from Darkest California,
Ross

[Nobade]

I've got a 35/30-30 rolling block rifle built on a Pedersoli frame. It works great, but as for dimensions they could be just about anywhere depending on the reamer. From the start of the shoulder back to the rim it's standard 30-30, but it has a very slight shoulder and bigger neck. I made this one by getting a 30-30 barrel rebored, and used a Clymer 35 cal. necker and a Manson throater to make it work. I cut the chamber to 2.00 inches, and trim my cases to 1.985". I throated it so a RCBS 200 FN just touches the lands when it's seated to the crimp groove. If I did another one, I'd get a custom necker. The regular 35 necker is too big, since it's designed to work with 35 Whelen and other cases that are a lot thicker than a 30-30. I don't have any numbers handy, but I'd just open up a 30-30 case, seat a bullet, measure it and add about .002 for my necker size. BTW, I'm loading it with Lee 358 Win dies for now. They work fine until I can get a set from CH4D that will be correct. You might also check with them for obsolete dies, the 35/30-30 are $72 from him and a whole bunch more from RCBS if you can get them to make you some.

[Beerd]

Or you can make a ".35/30-40" by running 30-40 Krag brass thru a standard 35 Remington die.
Comes out with a loooong neck.
Kind of an interesting option in a single shot.
..

[ARKANSAS PACKRAT]

Beerd; Do you have the 35-30-40? I have a case setting here in front of me, I like it for my Martini, cut the neck back a bit and have a .35rem-ln? That project is right behind the 32-40 in the other Martini.

[Marlin Junky]

I would much rather neck down 38-55 brass than neck up 30-30 brass and have the chamber reamer dimensions as close as possible to the sizing die. Otherwise I wouldn't bother with a 35-30 Win and probably would just stick a SuperMag reamer in the .357 H-R chamber and hope for the best. The barrel has a 16" twist and I'm looking for a 30-40 grain case to go with it.... the 30US is too big.

A straight wall case would be cool but I guess 35-40 Maynard can't be made from the 38-55.

MJ

[Beerd]

A P

I have a TC Contender chambered for the 35 Remington Rimmed.
For the TC I run 30-40 Krag brass in the 35 Rem die and trim to 35 Rem case length. Works good to have a rim for headspace & extraction.
Use standard 35 Rem load data.
I have minimal cast boolit loads worked up for this one, none available to me handy.
..

[Marlin Junky]

Hey wait a minute... I just picked up a copy of "Cartridges of the World, 10th ED." and the author says (in Chapter 3 about the 35-40 Maynard [1882]), "...The case dimensions are not identical, but cases can be made from 38-55 cases, just as the 35-30 (Maynard)." Then he goes on to list the head diameter in the back of the book at .400". Has anyone taken a case head down that far? I think brand new Winchester brand 38-55 brass 'mikes' .416" to .417" at the head.

MJ

[Beerd]

the 35-30 maynard is purty close to a .357 Max (I think).
..

[Marlin Junky]

the 35-30 maynard is purty close to a .357 Max (I think).
..

Head diameter on the .357 Max is the same as the .357 Mag.; i.e., .379".

MJ

[Beerd]

MJ
yer right.
close, but no cigar.
..

[uscra112]

With enough press, you can squeeze the head of a cartridge by an amazing amount. I make my .25-20 SS and .22-3000 Lovell brass by pressing .223 Rem brass into the neck of a .30-30 die, which brings the base down to about .315" (from .375") leaving a fillet above the rim, which I machine off in my lathe. It takes a hydraulic press to do this, and I have to use a punch that has a pilot to keep the primer pocket from collapsing, but it works. Slow, yes, but I get excellent brass from this process. Far better IMHO than the Bertram stuff that most people are forced to use.

Finding the die to use for your .35-40 Maynard may be a problem, but I've had it suggested to me by a fellow weird-cartridge-maker that commercial drill bushings will work if you can't find a sizing die with the neck close to your desired size.
These are getting tough to find - nobody jigs up a production job with bushing plates anymore, they just program the CNC. But McMaster-Carr has them. www.mcmaster.com Also J&L Industrial Supply www.jlindustrial.com If there's a drill size close to your desired base diameter, you're in business.

(Perusing my copy of Barnes for a minute suggests that a sizing die for .378 Weatherby Mag. may be right. You will need a die for a bottleneck case, since you need to preserve your rim. The shoulder diam of the .378 is nominally .560, plenty much bigger than your nominal .490 rim.)

[uscra112]

'Course another possibility for a .35 rimmed cartridge is to run a .35 Whelan reamer in, but hold it short by about a quarter inch. Then you can make your brass from 8x57 Rimmed in a shortened .35 Whelan die.

[rjmelehan]

Well this is a 13 year old thread so like they say, 'if a tree falls in a forest, ................'

MJ, I have been making my 35-40 Maynard cartridges from 38-55 brass...