Thread: Brass indexing... Does anyone admit to doing this?

There is an argument that says that a proportion of cases are banana'ed. -they lack concentricity all the way up the case. Some competitive shooters cull these pieces from new brass either by using a fancy neco case gauge and measuring the case internally at the web, (looks like a pain in the ass) or using a case neck width thickness gauge the argument being that at least for Lapua and norma brass there should not be much more (or any more) than 1 thou variation in neck wall thickness at the case mouth, anything with 2 thou or so variation is possibly a banana'ed case and ditched or used as a fouler/sighter. If a banana'ed case is fired it apparently bends after spring back, so another way of looking for them is to check the concentricity of fired brass and and anything that is out of whack is ditched, assuming that extraction doesn't ding your case necks on the way out.......

After i read this stuff I checked 50 new norma brass and they were all within a thou or so then, I gave up worrying about it and moved on to obsess about something else....