hylander
05-09-2012, 12:52 AM
I think my new Lyman sizing die is sizing to small.
When the case is sized it looks like it has a buldge the last 3/16" at the bottom.
But measuring them I find that they are being sized smaller up top.
When using my Lee sizing die they look fine and measure a lot better.
Cases are same head stamp from same lot, fired once with the same load.
The Lyman is sizing a full .004 smaller,
Seems they are overworking the brass, should I take these Dies back ?
Exterior case diminsions after sizing.
Lee: .4525 until the last 1/8" then .454
Sizing ring measures .4505
Lyman .4485 until last 3/16" then .454
Sizing ring measures .446
When the case is sized it looks like it has a buldge the last 3/16" at the bottom.
But measuring them I find that they are being sized smaller up top.
When using my Lee sizing die they look fine and measure a lot better.
Cases are same head stamp from same lot, fired once with the same load.
The Lyman is sizing a full .004 smaller,
Seems they are overworking the brass, should I take these Dies back ?
Exterior case diminsions after sizing.
Lee: .4525 until the last 1/8" then .454
Sizing ring measures .4505
Lyman .4485 until last 3/16" then .454
Sizing ring measures .446