Cleaning out the shop, came across a 5 pack of 30-06 based brass cases that thread into a steel head..Factory claimed beyond 300 Wby velocity with the 30-06!! but will work with any 06 based case as the brass part that's threaded is not necked down, so 284, 308, 35 Whelen, 330-06, and on can be used..If you run out of cases they apparently can be made on a lathe, in fact the whole shebang could be made on a lathe..

the company is O'Connor Rifle Products, Edisto Island, S. C. They advertised in most magazines in the mid 50s as best I recall..You screwed the brass case into the steel head and stuck a primer and filled the case with whatever powder..I played with one case and did get 3400 with a 180 gr. bullet and quit since it didn't blow the mauser up in the tire...Gave the case to a late friend of mine and he tried his best to blow a mod. 98 up and didn't even come close...Said it does what they claim and much more..It has sat in storage for maybe 50 or more years I guess..This 5 pack should be a museum piece or at least collectable. I posted on the reloading thread and it stayed quite as a mouse!!

I don't think this stuff flew, as apparently it no longer exist but some sho nuff lathe work went into this product on both brass and case head. You could use the cases over and over, they won't wear out or change dimension..

I think perhaps Im the only one on earth that remembers this product or has a 5 pack of it..If anyone is truly interested I can take a picture of it and send it to anyone that wants to post it..

It does work,at least to the degree I took it to back when..and I wonder why it didn't fly..Does anyone have a clue or even know it once existed..The specs are outstanding.

Ray, I remember seeing those advertised in magazines, probably in the 60s and 70s. Don't know of anyone who ever tried them and I have never actually seen them.

Ray I will PM you and post your picture, I'm too curious to see what you got to pass this up.

I don't remember it when it was new, but I have read of it in old reloading and or gunsmithing books. Kind of surprised no one is trying it now, with all the interest in big boomers and extreme range shooting. Maybe we just have better brass this days from companies like RWS, Lapua, Peterson, etc. Some have been around for a long time, but were hard to acquire back in the day.

I.ll take some photos and send them to Snellstrom, asap, busy tomarrow so may be a day or two unless I can get a break.

I quit what I was doing and took the pics and they are on the way to Snellstrom..

What a trip down memory lane! I do remember seeing adds in magazines of those cases way back when. Thanks for the trip.

There is a company out there recently that is using this on casings today.

I too have 2 five packs of those O'Connor cases. Had them for years but never got around to playing with them. One pack has the steel heads installed and the '06 brass fired maybe once, the other pack consists of five basic brass threaded case bodies as yet unformed to any '06-based cartridge. I got them in a lot of other stuff and always thought they were a nifty idea.

If anybody wants them, drop me a line. I'll sell them all for $20 plus couple bucks for the mailman.

As to "blowing up guns", it is the brass case which is far weaker than the steel of the barrel and action. If you can make the case stronger you can increase pressures considerably and still stay within the limits of what the steel action can hold without permanent deformation.

So sure, the steel-headed cases (which I remember well, but never found enticing) can allow you to load to much higher pressures and therefore achieve velocities significantly greater than with all-brass cases. Just what those pressures are doing to your bore is another issue.

I never followed up on it mostly because I never felt the need, Im fine with a 200 gr. Nosler at 2700 FPS in my 30-06 and back then it was a 180 gr. Corelokt or WW PP at 2700..

But I do believe you can get 100,000 PSI as O'Connor claimed..thats about twice the pressure of a brass cases pressure so before you jump and become a nay sayer, try it and report it, because if you don't your just spreading gas and BS..

I have a problem with folks that make posts as factual when they have no experience with the subject whatever that may be...Am I wrong? I see a lot of comments on bullets the poster has never tried for instance..

I'd hate to see the result if things went awry with those babies. The concept just seems a bit unsound to me -- especially the juncture of the brass and steel.

Wouldn't dis-similar metal corrosion cause weakening of the area where the two pieces come together?

I vaguely remember those ads. I think I remember an article in a gunrag. But it has been soooo long. I would have doubts as Bill in Oregon. Just questions. I never tried it, so who knows? Thanks for the trip down memory lane Ray. And Hello to Gary N. Be Well. Packy

I never said it would work, just like everyone on this thread I guessed and by gosh..I did however shoot one a couple of time with some hot loads and guessamated its velocity..I simply chickened out, that the reason I still have 4..

Basically I put it up for conversation to leave all the experts stuttering as stated, and that's about all I got..