Lightman we might be talking about different types of LC Brass, but during my M14 Service Rifle days, I measured LC XM118, M118, M118SB, M852 and M118 LR cases every which way (weight, case wall thickness, neck thickness, base squareness, case curvature) most often with a NECO tool, sometimes with a Sinclair concentricity gauge or an Audette tool. The LC Match Brass is no better than LC Ball brass (M80) other than the absence of a primer crimp. I will back up and say the LR brass is actually more consistent than the previous generations of LC brass, but nowhere near the consistency of Lapua. Some out there might remember the NRA Highpower Rifle series with folk like Creighton Audette, Bob Jensen and Mid Tompkins weighing in on loading for accuracy. The LC64 brass was called out specifically as being pretty bad consistency and straightness wise.
Lately I've been using a quantity of once fired LC67 National Match. No, it isn't Lapua but it's pretty darn good, a lot better than many usual suspects commercial brass of late.
