40/60 brass????

[Slamfire]

 " Question",,,does anyone besides ,,JAMISON ( CAPTEC INTAL),,make brass with closer tolerances's for our 40/60 win,(chappie's). My  new brass,has a rim. thickness of .054 to .057,,and a  rim dia. of .615. I was told by a feller at CAPTEC,,"That my brass was with in the spec's set by "SAMMI",,,and if they had any on hand it would be to the same spec's". Told the feller , I could mill the rim dia. down,,,but was hard pressed to make thin washer's to take up the head space,,,soooooo , I was just wondering ?
I bought 50pcs. a while back,,just now getting time to get them ready,,.probly shoot'm any way,,will trim dia. to spec.
                          win. 40/60
                           rim.thickness .062
                           rim. dia. .o63
Hootmix.