The first thing I really hone in on is neck tension. I swear by bushing dies for getting it just right. Too much tension and you’ll end up crushing the brass, but too little and your bullet seating will be all over the place. I just can’t bring myself to trust a thrower with these rounds, so I take the time to use an electronic scale and trickle every charge. It’s a bit of a slow process, but honestly, it makes a huge difference.
And when it comes to seating the bullets, I really go all out. These little guys can be super sensitive to how deep they sit, and even being off by a few thousandths can throw your groups way off. So, I measure every single one. It might sound tedious, but brass prep is a must. I make sure to chamfer lightly, clean everything carefully, and I don’t take any shortcuts. It might seem like a lot of work, but it keeps everything consistent and saves me from headaches later on.