WTF (Want to find) complete chamber or case dimension for 30-30 Wesson. I have the base, rim dia, length, but it would be useful to have the neck dimensions and taper dimensions to make a reamer. I have seen here information on smaller neck sizes for allowing tight fit and neck reaming.

Or, if someone has a used reamer to sell or rent.

Thank you,
Charles

Unfortunately the 0.907 degrees per side does not work. It leaves a neck length of 0.060". For a guessed neck length of 0.5" and assumed .380" base and .330" neck gives a single side angle of 1.268 degrees. 

Maybe someone can give suggestions on the range of neck lengths would make a great BS and fixed cartridge.

Thank you,
Charles

I would suggest a neck of .320, that gives you one caliber with a little extra to trim or not.

Remember on your taper that you have end it at .200 forward of the case base. That area is solid and won't take a taper. If you have a .330 neck and a .376 case head, you need a included taper per inch (TPI) of .042 or 1.203 deg. per side over a distance of 1.11, from the solid case head to the start of the neck.

The 357 Max has a .010 neck thickness and I make my necks .330 for a .310 ID before firing, if your chamber neck is .330, after firing it will be .329, a perfect fit for a .309/.310 bullet.

This is a cartridge that I've wanted to use for about 3 years and that is the design that I would have made if I do one.

Frank

The 30-30 Wesson used a large rifle primer so the 357
Maximum would not replicate the original design.

From Cartridges Of The World
Case type - Tapered
Bullet dia. - .308"
Neck dia. - .329"
Base dia. - .380"
Rim dia. - .440"
Case length - 1.66"
C.O.L. - 2.50"
Twist - 12"
Primer - Large

That is good question Frank and one for the ASSRA Schuetzen Meister to address not me and probably should be looked into if meeting the traditional class is also one of the goals. I was simply pointing out that the use of the Max. case would not be the correct choice for duplicating the original and I do not believe you could call it as such. It would simply be another new cartridge based off of the Max. case. We had a couple of our top competitors jump on the 30-30 Wesson for competitive use quite some time back and really gave them a run for the money but they just didn't pan out and I don't remember the parent case they were using to make their brass.

JLouis

This is a great discussion! The intent would be for traditional otherwise I would simply ream it as a 327 Federal magnum and be done with it. That begs the question on how close does the dimensions have to be to be "traditional"? If they get out the micrometer I'd bet a high percentage of the "traditional" rifles out there would fail. Most of my originals have generous chambers nothing like the competition rifles of today.

That is still the information we already have but does not help in the location of the transition from neck to taper or taper angle to draw the complete cartridge.

We are talking apples and oranges here, John. Brass is a consumable rifles are forever. I don't understand your logic here. Brass cand conform quite a bit to  chambers that are a little different and as a matter of fact, I've never heard of a "brass" rule, is there such a thing?

Are my 30/40 Krag case that I swage to 32/40 legal? Are my 30 American case legal in 32/40 and 32/35? Are lathe turned or reduced capacity RMC cases legal? Are stortened 9.3x 74R or 35 Winchester cases legal for 40/63 Ballard? And last, if I open the 357 Max primer pockets to LRP size, will that then make them legal?

The Coors matches (god bless them) were never part of the ASSRA. ISSA may be a off shoot of Coors but, now a days, not really.  Since Coors ISSA and ASSRA has tried to make rules conform as best they can.

That said, you might be better off going to ISSA and trying to get them to allow FIX actions in the ISSA Traditional class. 

Frank