I am working on a series of spec spreadsheets for bolt action receivers (for ELR cartridges) and want to include on them (and on my Cartridges page) the "nominal" bolt face diameters for the following three cartridge cases (there will be three matrixes, one for each of these). I've listed what I understand them to be. Please advise if you understand otherwise (be so kind as to quote a non-forum web source - unless the poster is a receiver manufacturer). BTW, by "nominal" I mean what a typical consumer would find if he/she mic'd their bolt.
.338 Lapua Magnum - .590
.408 CheyTac - .645
50 BMG - .808
Thank you!
.338 Lapua Magnum - .590
.408 CheyTac - .645
50 BMG - .808
Thank you!