Thread: 6x45 Rem barrel

I finally received what was supposed to be a pre-chambered 22" long fluted S/S 6mm TCU barrel but it wasnt.
I had to make a chamber cast to actually work out what it was.
Someone had used a .223 reamer with a 6mm pilot then followed it up with a 6mm neck and throat reamer which made a very long necked crude 6x45 chamber with some interesting dimentions.



I threw it in the lathe today and shortened the chamber end 10mm then rechambered it with a correct shorter neck and throat 6x45 reamer and it has come up very nice.

I have threaded it for my switch barrel CZ 527 Varmint and look forward to working up a load for it.



While The 6mm TCU was my intended build and would have offered a bit more performance it wasnt enough to warrant importing a custom reamer and die set. Ill just grab a set of 6x45 as soon as I find some on offer. I managed to neck up and load a few loads to test over the chrono using my 6ppc dies this afternoon which will have to do for now.
27gr of H4895 with a Nosler 70gr bullet got me just over 3000fps. Should go well with the 80 and 90gr bullets.
Will test it with some BM8208 too.