I have a set (2) of Dillon SDB's. One in large pistol and one in small pistol primer sets. They only do Pistol calibers other than 50Cal. They are true progressive and will do 300-400 rounds per hour. Since I do not do Rifle calibers I chose the SDB. I load competetive ammo for USPSA and wimp loads for IDPA. All is good with these loads and the 357Magnum loads I also do every few years. They work great and I have had a few Factory repair parts for them using the NO BS factory warranty.