CMV
Member
I'm getting .005 overall variance in my finished rounds. All the cases were trimmed to the same length +.002/-.000, but I found after chamfer/deburr I introduced an additional -.002 variation on some (maybe shouldn't have done that with the drill?). Anyway, my cases seem to have .0035 overall variation - between 1.7485 - 1.752.
But that shouldn't matter right? That should make some bullets seat a little deeper than others, but the OAL should be consistent right?
First thing I checked for was primers not fully seated. They look good.
I'm using Lee dies in the Lee Classic Turret press but not auto indexing. The dies are about as finger tight as I can get them. I'm pretty sure I read that I'm not supposed to tighten the dies into the turret ring with a wrench - only finger tight. Even so, if the die was backing out I'd get progressively longer OAL lengths, not one at 2.225, then 2.229, then 2.227, etc.
I'm checking my caliper between measures & it's staying zeroed.
What am I missing? I'm staying above 2.20 min OAL, but I shouldn't be getting .005 variation should I? These are the rounds I'll be working up with, so I'm reseating until they're all 2.225". I'm thinking 5 thou is enough to cause inconsistency but maybe it's not enough to matter - I don't know.
.223, 55 gr Hornady FMJBT, H335 poweder, CCI #41 primer, Lake City brass.
But that shouldn't matter right? That should make some bullets seat a little deeper than others, but the OAL should be consistent right?
First thing I checked for was primers not fully seated. They look good.
I'm using Lee dies in the Lee Classic Turret press but not auto indexing. The dies are about as finger tight as I can get them. I'm pretty sure I read that I'm not supposed to tighten the dies into the turret ring with a wrench - only finger tight. Even so, if the die was backing out I'd get progressively longer OAL lengths, not one at 2.225, then 2.229, then 2.227, etc.
I'm checking my caliper between measures & it's staying zeroed.
What am I missing? I'm staying above 2.20 min OAL, but I shouldn't be getting .005 variation should I? These are the rounds I'll be working up with, so I'm reseating until they're all 2.225". I'm thinking 5 thou is enough to cause inconsistency but maybe it's not enough to matter - I don't know.
.223, 55 gr Hornady FMJBT, H335 poweder, CCI #41 primer, Lake City brass.