Thread: my 7x60 wildcat project

I reformed some 270 Win Norma cases into 257 Robts cases years ago in one pass using RCBS 257 Robts full length sizing dies. My lube of choice was Kiwi nugget neutral shoe polish & they all formed in one pass in my Lyman Orange Crusher press. They were unfired cases & I didn't anneal till I'd finished with inside neck turning etc. From memory, a few has slight dimpling at the neck/shoulder transition but that blew out with no problems upon firing. As an operation, it is very similar to what the OP has done to form his 7x60 cases. Sorry if I didn't pick up on it earlier in the thread but I would recommend neck reaming/turning to remove the thickening that will have occurred below the neck/shoulder transition so the neck is a consistent thickness right through. If your chamber is slightly on the loose side, not a reflection of Jaco's work but the way the reamer was cut, you might get away without neck reaming but I wouldn't be keen to ignore it.