swaging .315/6 bullets from 8mm?

In my limted knowledge of swaging I believe that you are better to bump up a .308 bullet because the the copper jacket is "springier" than the lead core ,
 
From the old 2009 thread that was posted I think you need a Lee Classic Cast or Rock Chucker type press and a Lee sizer die in .316" *can be custom ordered in a couple weeks from Lee) and lube. Sounds like the Lee case lube worked for the other poster. Might also try synthetic motor oil.
 
oversize bore

As an experiment you might try paper patching some .308" bullets out to .316". I read about this some years ago in an article in Guns & Ammo by Ross Seyfried where he paper patched some .308" to shoot in an older .318" mauser. I tried it myself for fun by patching out some cast to shoot in my own 8mm mauser with some success. The instructions for paper patching are in the Lyman cast bullet reloading manuals.



270 totheend
 
http://www.canadiangunnutz.com/forum...d.php?t=374843

Choose the right bullet (Speer Hot-Cor work well, solid copper, not so much) and the right lube to start. A "toy" press might break, but not a Rock Crusher or the more expensive Lee. Do it in stages, either through successively smaller sizing dies, and/or by screwing the sizing die down towards the shellholder in 1/2 turns.
 
I have drawn down winchester power point bullets made for the .303 in a lee size die made for the .308, no problem and they shot OK in my .308.

I think your project would turn out Ok if you chose cup and core bullets originally in no more than .323" diameter, pushed through an appropriate Lee size die. One tip that I have read about, the first pass might not be quite enough if your draw die is exactly the bore diameter that you require. There is a small amount of spring back in the bullet. My .312" bullets measured .3085" when I was done one pass, good enough.

Actually, .318" diameter bullets made for older 8mm rifles might work just fine if you are careful working up loads. 2 thou is not a greatly oversized bullet if you keep pressures reasonable. Good luck!
 
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