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Forums10
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Joined: Sep 2014
Posts: 20
Boxlock
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OP
Boxlock
Joined: Sep 2014
Posts: 20 |
Mike, I found this discussion on the Cast Boolits discussion board just this morning. http://castboolits.gunloads.com/showthread.php?75108-9-3x72R&s=1c8d7bfae4fd492f551a47597ee3e683. It appears that some Austrian gun makers made their guns 9.3x72R with a 2-taper chamber so that they could sell proprietary dies and ammo. Based on this and the fact my full length resized rounds won't fully chamber I suspect my gun may be one of these. Regards, Doug K
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Joined: Aug 2007
Posts: 11,096 Likes: 226
Sidelock
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Sidelock
Joined: Aug 2007
Posts: 11,096 Likes: 226 |
Doug K:
Just curious but have you made a chamber cast to verify any of the oddities?
Cheers,
Raimey rse
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Joined: Jul 2012
Posts: 4,560 Likes: 233
Sidelock
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Sidelock
Joined: Jul 2012
Posts: 4,560 Likes: 233 |
DougK Actually, there were different versions of 9.3x72R available, 9.3x72R D (Deutsch), 9.3x72R E(English), 9.3x72R N( NORM.- standardized)( this was designed to fit most of the others and allow easily reaming the chambers of the rest to fit), and 9.3x72R S&S (Sauer and Son)( an entirely different cartridge based on a larger diameter case). From your description, it seems you may have a "D" version rifle, which is the "2-taper chamber" mentioned. Modern ammunition is the "N" version. Of course, absent a chamber cast, there is no way to know what you have. In my experience, if a cartridge is fired in a "D" chamber( by resizing or forcing it in), then it is fireformed to the chamber and can be loaded with "N" dies, which would function as neck sizing dies. If your load expands the head diameter enough to make chambering difficult, it is likely too hot. I suspect it is something else causing the interference. You can "smoke" a case or color it with a magic marker and push it in with some force. When you extract it, it should show the location of the interference. You might be surprised how many 9.3x72R reamers exist. Mike
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Joined: Jun 2008
Posts: 5,554 Likes: 184
Sidelock
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Sidelock
Joined: Jun 2008
Posts: 5,554 Likes: 184 |
Here is one cheap trick Get a second shell holder, grind a few thousandths off the top of the holder so the die can sit lower. See how this works for your firearm. Mike
Last edited by skeettx; 02/25/18 03:58 PM.
USAF RET 1971-95
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Joined: Jul 2012
Posts: 4,560 Likes: 233
Sidelock
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Sidelock
Joined: Jul 2012
Posts: 4,560 Likes: 233 |
DougK, You can do the same thing Skeettx mentioned by putting any flat piece of steel on top of the shell holder to push the case all the way up to the rim, into the die. You can do this to see if that is the problem, then decide what to do about the shell holder. A thinned shell holder and stuck case=busted shell holder. BTY, if you try either suggestion, remove the expander so you can drive a stuck case out. I use a "pusher" I made up with a flat top and the bottom like a shell holder, it works for everything ( but I have to drive all cases out). On reflection and going back to your first post, I wonder if using a 250gr bullet in a chamber cut for a 200 or 193 gr bullet is the cause of your problem. I suggest you smoke the bullet of one of your handloads and chamber it. When you extract the cartridge, check the bullet for bright marks caused by the lands in the barrel. Mike
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Joined: Mar 2003
Posts: 122
Sidelock
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Sidelock
Joined: Mar 2003
Posts: 122 |
Der Ami and Skeetx, which size or caliber Lyman M die do you use with your 9.3 x 72r for reloading?
Thanks, Ron
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Joined: Oct 2016
Posts: 307 Likes: 27
Sidelock
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Sidelock
Joined: Oct 2016
Posts: 307 Likes: 27 |
Apparently Midway doesn't carry it but Lyman does make a 9.3 M die.
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Joined: Feb 2009
Posts: 7,559 Likes: 249
Sidelock
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Sidelock
Joined: Feb 2009
Posts: 7,559 Likes: 249 |
I think it could be a good idea to contact Lyman directly. Some folks have reported ordering the particular size that they want for a very modest price. I'd figure out what basic expanding diameter I'd want and then let Lyman pick the diameter of the larger step. Could maybe let them know how deep the bullet will be seated, unless someone wanted it deep in the case past the neck. Sometimes the cast bullet is larger than the bore diameter, for good reason, and the expander could be sized for the bullet and not just generically for the stamped caliber.
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Joined: Jul 2012
Posts: 4,560 Likes: 233
Sidelock
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Sidelock
Joined: Jul 2012
Posts: 4,560 Likes: 233 |
Ron, I just use an "M" die body I had on hand with a "shopmade"(read home made) expander stem, made to fit the bullet and bell the case. I just left the expander stem in the sizing die, but with a smaller( don't remember diameter)expander button; just to hold the depriming pin in. Sometimes I deprime by hand and leave the stem out of the sizing die. "A lathe is a requirement of life" Mike
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Joined: Mar 2003
Posts: 122
Sidelock
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Sidelock
Joined: Mar 2003
Posts: 122 |
Thanks everyone for the suggestions on the M dies. I have a small lathe so was thinking about trying to make my own expander stem. Didn't seem like a difficult project.
Ron
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