Interest in a Win M94AE 30-30 Win Bullet?

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I just finished up helping a fellow that needed a bullet for his Winchester M94 AE chambered in 30-30 Win. The problem he had with the rifle is that everything he tried required a really short cartridge length. He made and measured a couple of chamber impressions and we immediately saw the problem.

The chamber is more like that used in a semi-auto pistol rather than a rifle, it has only a step that ends immediately at the bore and groove diameters. Usually and as per the SAAMI drawing, there should be a step leade that takes the chamber down to the final diameters.

In a nutshell, the chamber offers little support. Think of the point where the step meets the bore/groove as a sizing ring. No different from a Lee bullet sizing die or the steel ring in the base of Lee Carbide Pistol Factory Crimp Die. At this point in the chamber, the bullet is going to experience quite a bit of stress as it is going to be sized to the bore and groove diameter without any foreplay!

What I’ve done is placed a tapered top band that is .310″ at the base and then reduces to .308″. This should help with the sudden reduction in bullet size. I’ve also given it a bore rider nose at the upper end of the top band. There is a 90° drop from .308″ at the upper end of the top band to a .301″ bore rider. This bore rider should provide support as the cartridge is seated in the chamber and help with the size reduction the bore is going to cut. Here you can see that as the bullet moves .050″ forward it is fully engaged in sizing.

The end result is a .310″, 160-grain bullet that has a great cartridge overall length. I’m not sure what other M94 AE shooters are out there and if they have experienced the issue of short cartridges being required but I really doubt his rifle’s example is the lone wolf.

Here are the rest of the drawings.

If you are interested, speak up!

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[markpissosParticipant]

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I am interested in obtaining one of these molds.  I recently purchased the SC311 165 RF for both my 30/30 Contender and my Henry, but when I tried them on my Contender, I came across the same issue as you stated in the opening paragraph concerning a short cartridge length.  After some more diagnostics, I also found that my step leade is also minimal.  This mold may be the answer.  Let me be the first in line for NOE to have a group buy.

Thanks RD for your explanations of the problems and solutions.  They help tremendously!

[kevinensignParticipant]

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I believe your on too something as my first NOE/30cal mold was the 311041(?) 148gr bore rider.  Never knew that term till I cast and loaded it.  Had me all up in arms cambering the thing, but everyone said its a “bore rider” thing….well I smash them in there and they shoot great, but if I have to eject a round I have had them pull off and stay in the chamber so thinking I’m included.

Would I be interested?????? gonna have to watch this thread but would seriously consider it.

[MichaelParticipant]

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I have a TC Contender rifle in 30-30 that has a very abrupt leade that blocks the use of most of my .30 cal. cast bullet molds. I suspect that this design might be a solution to that issue. Your thoughts? Thank you.

MH

[markpissosParticipant]

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I hope this one doesn’t die!  From what I am reading on some other posts, the Contender 30-30 could really benefit from this design.  Come on TC guys, let’s get this one rolling.

[markpissosParticipant]

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I was sure hoping that more TC guys would be interested in this mould.  Here’s to still hoping it doesn’t die.

[markpissosParticipant]

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ttt

[Author]

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