Sorry for the wrong terminology they are case forming dies. Paul Bike has a video on you tube demonstrating his dies and also Skip Otto dies which he calls shoulder set back dies.I need to bump the shoulder back on a 222 to fire form it to a 222x35 also I need to bump the shoulder on 308 brass to make the 30x44.
Thanks Jim
Man, I'm gonna' get in trouble for this but I guess I'm in the mood......
About 25yrs ago there was a competitive venue called "Hunter Bench Rest " or HBR wherein the minimum case capacity was "30-30 Win" or about 30X44'ish and maximum scopage was 6X......and there were matches being held regularly here in WA state. So I needed a rifle.And while there were a very few guys actually using the 30-30, I wanted a 308-based case. But being a resizing die freak (my basic requirement is that cases last at least 50 firings, HOT firings) I had a dilemma because I couldn't find a gunsmith who could match my dies to my chamber. I had neither lathe nor mill.....
SOOO, I Improvised And Overcame.
I took a chamber cast of an in-hand RCBS FL die and ordered a reamer from it. I had the reamer and an 18 twist barrel ordered up with instructions they be mailed directly to a reputable action maker and supplied said maker with instruction to run it in to "GO Gage minus .XX" which number I would supply.
Now here's where it gets sticky.
I had no lathe/mill...nor forming dies.
I DID had a cheap benchgrinder, 8"
So I got me an icecream bucket of water and I bellied up to the grinder and within 15 minutes I GROUND OFF a couple hunnerd thou, almost a quarter inch. Neatly. Almost it looked perfessional. I leant over the the wire wheel side and "chamfered" the inside edge and went off to make some cases. I inserted some dead primers and started running the die down and dumping cases full of water and weighing.....deeper and deeper I went until I got my measurement. And sent this measurement off to the gunsmith.
Metal came
Stock in hand
Assembled same
Made me some "try cases"
Gun shot freakin' BUGHOLES..........
Absolute, unmitigated SUCCESS, spent 3 days with 5 cases, fired 43 groups without issue. BUGS...
Sent some fired cases over to Neil Jones for a "real" resizing die and fired many more rounds while I waited for it.
MANY more, like wore out the barrel.
In the meantime HBR died an untimely death thanks to an aberration known as the "30BR" and folks' beefs with the 6X requirement.
I currently own 5 barrels with matching chambers and three completely interchangeable resizers, three reamers, two completed setups and some testing mule stocks...... and have thoroughly explored the cartridge using the original 308 cases, 30-06 cases, 300 Savage cases, the (still relatively new) 6.5X47L and even the new 308 Palma cases. IF HBR ever resurges, I'm all set!!
But the weird thing is.......that old GROUND OFF RCBS DIE still makes and maintains just as perfectly fitted cases as the Neil Jones and the other mod'd custom die. But with only one neck diameter setting. And the bases get so tight that I've stepped up my later reamers to a fatter butt.
Jus' sayin'
It's about FIT, not about how much you spend.
You can grind off an existing die to make a case-forming die. You _can_ even use that die for a full-length die in some cases....
I now have a lathe and mill but to this day when I make up an experimental round I'll often cut off or otherwise modify a cheap factory die.
hth
al