New Web dimension on New Lapua 22/250 and 243 Win brass

[AckleymanII]

I need some help on the web dimension on NEW Lapua 22/250 and 243 Winchester brass. My current SAAMI spec reamers are too tight in the web with the Lapua brass.

PMC 243 brass is tight in the web with my reamer, also.

 

[358WCF]

.4663 to .4671" on some recent production Lapua 22-250 at the front edge of the extractor groove.

.4617 to .4620" on some old ('80s vintage) WW 22-250 in the same spot on case.

Unfired brass in both.

I ran into this with some older Lapua 30-06 brass with a reamer made to snug spec based on '80s WW brass.

 

[AckleymanII]

Thank you 358WCF!!!