Hi,

So I was bored last night and didn't feel like working another 14hr day and decided to prep my brass for reloading. I full length size all my brass every time after each trip to the range.

I run my brass thru a body only die and measure the headspace to ensure they are within the limit of interest. However, after measuring several cases I have found some headspace are longer than others by as much as .002.

So, now I'm scratching my head. What could it be? The brass (I'm using Lapua)? The die (redding)? My measuring tool (hornday LnL Gage Bushing/Comparator)?

I'm thinking it could be the die but could also be the inaccuracy of the tool itself. So, what do you guys recommend? What is the best tool to measure headsapce? Oh and I use "Hornday one shot" to lubricate the brass and I always clean the die before each reloading. And yes, I made sure the die wasn't moving in the press.