Advance warning

: If one only wants to make loads for plinking, a lot of the following is overkill.
I handload and chronograph (CED) each recipe for my 357 mag., 40 S&W, 45 Auto, .44 Spec. and .44 Mag. and tailor each load to a particular gun. Yes it makes a large difference. All of my handguns are compacts with relatively short barrels and they chronograph better than any published factory load I have tested (or the OEM publishes for long barrels), other than Buffalo Bore. Man, I can't get within 8% of Buffalo Bore's loads in anything I load for. So I use Buffalo Bore for my self defense ammunition of choice that I do not want to load for, for whatever the reason, with a large bonus that their blended powder has no flash. Plus they use my bullet of choice- Speer Gold Dots.
I am telling you all of this to preface my equipment and methodology and that I am very **** retentive. I have found by testing that bullet selection parameters and OEM, powder type and amount, setup of equipment for bullet seating and primer seating, along with neck retention are all very important, more than many would realize if they did not actually test each load recipe as I do.
I use the Hornady Classic single stage for installing primers (I have standardized on CCI) before the cases (I have standardized on Starline) go over to the progressive press, for fixing individual rounds that have some kind of issue noticed during loading on the progressive press, or any other specialty type item, such as removing Berdan primers from military cases. I have a complete set of dies for each caliber setup specifically for this press.
I use the Hornady AP for all of the other processes. I also have a complete set of dies specifically for this press. And I have several sets of powder dispenser assemblies for the various calibers so I do not have to change settings when I switch calibers. Caliber changes for me simply means I swap out pre-adjusted die assemblies mounted in quick turn/lock assemblies. I also measure the powder dispensed on a RCBS electronic power dispenser and other parameters every few rounds and make minor adjustments throughout the whole process as I load. So I guess in other words, all of my loads are custom made for each gun I load for and the quality control is very high.
My process is relatively slow for a progressive press, but my end products are stellar in performance. If I had things to do over again, I would get the Dillion 650 for the progressive press. The Hornady AP has been cranky and I had to modify shell plates, springs, etc. to get it running reliably for each of my calibers; a lot of folks had this same issue. This press was new ~ 10 years ago. I understand the newer Hornadys may have better setups, but I would check into it carefully.
One of the most important safety devices I have- and WILL NOT load on the progressive press without, is the RCBS Lock-Out die. This has saved me grief a few times by totally locking up the press whenever it mechanically detects a significantly high or low powder condition in the case prior to bullet seating. I can't stress enough how important I feel this die is. I have other types I have purchased and tried, but nothing comes close to the safety and reliability of this device. It is not an easy device to learn how to adjust. But once figured out- it works wonderfully.