I was wanting to see what some others did for practice. I've always used imported 5.56 (sounds better than saying Wolf) or inexpensive M193 when you could find it. A store here used to have Federal and Winchester 55g M193 at reasonable prices.
I've seen Ciener 22 conversions, and have seen Spike's Tactical selling their 22 Uppers and wondered what they were like. Trigger time and sight picture drills would be the same. Afterall most instructors say dry firing is good for practice so why not a 22LR?
Then I spotted a case of 5.45X39 ammo for $139.00 and thought that one of those uppers from S/W or someone else may be interesting for practice.
I'm not reloading yet, so I'm online looking for ammo deals like most of us.