"JMO - the chrono is the least understood, most intimidating (financially and mathematically) accessory that many average reloaders next to rule out. They're not that expensive (less than a digital scale combo), and they're not all that complicated (you might need a tripod and be able to follow directions). All of which are well within most reloaders' abilities. If you reload now without a chronograph, how do you know - beyond what a book says that load did in THEIR rifle - how your reload is performing in YOUR rifle?"

+1. A few years ago, I bought a used ProChrony at a gun show for $90. It was a great investment. No more guessing about MV's and trajectory.