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Shanghai Jack
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8.15 x 46 rimmed
Mar 7th, 2015 at 8:26pm
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Anyone have a source for brass?   

Thanks
  
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rgchristensen
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Re: 8.15 x 46 rimmed
Reply #1 - Mar 7th, 2015 at 8:28pm
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   They are easily re-formed from 30-30's.   Sometimes you have to thin the rims a little.    

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QuestionableMaynard8130
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Re: 8.15 x 46 rimmed
Reply #2 - Mar 8th, 2015 at 9:42am
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if you can find them it is a little easier to use the .32 Win. special cases.  They don't need to be necked up, simply run into a 8.15 die and then trimmed back.

When shooting a vintage euro-rifle in 8.15x46r I'd really recommend a chamber throat cast and careful measurement.  Some of the original shooting and "stalking" rifles were made before the cartridge was completely standardized and some rifles show minor variations in shoulder/throat dimensions and even overall case length.  It will also be invaluable in selecting and ordering a bullet mold to maximize the accuracy potential of your rifle

Factory 8.15x46r Ammo and Brass is also imported
  

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Adrian
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Re: 8.15 x 46 rimmed
Reply #3 - Mar 8th, 2015 at 3:01pm
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anneal 30-30 brass, lube with imperial Redding wax, and run through FL die WITHOUT STOPPING OR backing out. They will come out at about 50-51 mm. Trim, fire form with whatever bullet you want, and perhaps anneal one more time. For best results, you may need to turn the necks, to improve accuracy, depending on how you load and what you shoot. 
If your die has a .32 expander ball on the decapper, lube the inside of the becks as well. 
About 3% of cases will have creases on the neck or mouth, which either split or "iron out" when firing. 
A chamber cast is a great idea, especially for determining chamber length and bullet diameter. As mentioned above, many rifles were made before the caliber was standardized. Some will have tight necks and large bores, designed for heeled bullets, bore dimensions may vary quite a bit. 
After fire-forming, adjust your dies for minimal neck sizing. Brass will last longer and accuracy will be better. 
If shooting fixed ammo, neck turning is almost a must. 30-30 brass is all over the place to begin with, and the traumatic (for brass) sizing does not help with uniformity of brass thickness n the neck and mouth area. 
It is easier than it sounds, but it takes work. Before you start, insert a piece of 30-30 brass backwards if you can, to see how the rim fits. Some lots and brands may have larger rims than others. 
« Last Edit: Mar 8th, 2015 at 3:13pm by Adrian »  
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rgchristensen
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Re: 8.15 x 46 rimmed
Reply #4 - Mar 8th, 2015 at 3:33pm
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annealing ---
   I would NOT anneal the brass, especially for such a minimal re-forming.  1st place, it is hard to do uniformly, 2nd place, most people over-do it.   Third place, if loading by the German method or by breech seating, no further working of the neck is done, so annealing is not needed to prolong brass life.

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QuestionableMaynard8130
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Re: 8.15 x 46 rimmed
Reply #5 - Mar 8th, 2015 at 6:04pm
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I have several 8.15 rifles  I have made cases from 30-30, 32 win special, and 38-55 and used several batches of euro brass, RWS and Lapua.   my preference is the .32  it seems to be a bit more consistent in case length.    MY guess is that make a basic case and size it up and down as needed. 

  I suspect that the 32 just requires less neck alteration.  the euro brass is real good, but two of my rifles need a slightly longer neck that the "official" x46 to get my "stop-ring" bullets to fit into the throat properly.  I use the .32 brass for the rifle that requires x52 brass
  

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frnkeore
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Re: 8.15 x 46 rimmed
Reply #6 - Mar 8th, 2015 at 7:09pm
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Here is what I do:

1. I use a 30/30 case with a 32/40 FL die and size all the way to the shell holder.

2. If you are going to use a stop ring bullet, use a expander button .001 over the size of your bullet base (the brass will spring back about .001). 

3. Drop the case into the chamber, measure from the rim, to the barrel. Then shorten the case that much. If you measure accurately, the case will then chamber (shorten more if needed).

At that point, you will have the maximum length for your chamber and bullet size. Load with 9.0 gr (approx. load, you can go a little more or less) and fill the case with CofW or corn meal and fire form. The case will shorten just a little, the amount is dependant on your chamber configuration. Depending on the size and length of the SR, you may have to shorten slightly more.

If the case neck thickness varies, turn the necks before sizing in the 32/40 die. The reason to use the 32/40 die, is because it eleminates any shoulder and body difference between your 8.15x46R die and the actual chamber dimensions.

The reason that this works so well, is that there is no step (in all that I've seen) at the in of the chamber for the case, just a long taper that makes up the throat and that will vary with actual barrel bore size and most likely, the gunsmiths idea of SR size and length.

I don't shoot SR but, delevoped this method to size the brass to the groove diameter of my barrel. Done that way to protect the unused area of the chamber, when BSing. Done this way, my cases come out 1.94 lg when sized for my .316 groove diameter.

Frank
« Last Edit: Mar 8th, 2015 at 7:16pm by frnkeore »  

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Re: 8.15 x 46 rimmed
Reply #7 - Mar 9th, 2015 at 8:55am
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I used to make them up out of that useless short WW 38-55 brass. A little Imperial sizing die wax and run them trough a trim die then full-length size. If you are going to use a stop ring bullet you may have to ream it out.

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