For the pistols I reload for PowerPistol has worked out great. I only reload for 10mm and .380 ACP though. Funny how the same powder works well in both and as a result have not bothered to try many others.
.223 - Very good luck with Varget, H322 and VV133. VV133 is most accurate but expensive. Varget is my standard because all three .223s I own shoot it well regardless of bullet weight. H322 meters better but not as accurate. H335 shot well, meters great, but I don't like the mess of fine ball powders.
.270 - H4831 and H4831sc. Never had to try anything else. Great velocity, better accuracy.
.308 - Only tried Varget but it worked great, so since I have so much on hand all I ever used.
.223 - Very good luck with Varget, H322 and VV133. VV133 is most accurate but expensive. Varget is my standard because all three .223s I own shoot it well regardless of bullet weight. H322 meters better but not as accurate. H335 shot well, meters great, but I don't like the mess of fine ball powders.
.270 - H4831 and H4831sc. Never had to try anything else. Great velocity, better accuracy.
.308 - Only tried Varget but it worked great, so since I have so much on hand all I ever used.