Need to measure OAL
Just getting in to reloading and all me equipment came today. The only thing I am missing is a way to measure the OAL in my CZ 6.5x55. I want to purchase the Hornady® Lock-N-Load™ OAL Gauge which I can find but the Hornady® Lock-N-Load O.A.L. Gauge Modified Case I need for the caliber is back-ordered for months everywhere I have looked.
Any suggestions on how I can measure it or does anyone have gauge case for sale, or rent?
I comprehend how a projectile can, “lose velocity", but don't understand how a projectile can, "loose velocity".