Although not quite as inexpensive as S&B ammo, PMC ball is still fairly economical. I have found it to be one of the hotter FMJ loads, a good practice round for those who carry 230 gr. Hydrashock. The hotter PMC rounds shoot to the same point of impact as the Hydrashocks in my experience.
I agree that if you have a pet carry load, that should be the one your sights are set for...everything else is just a substitute, and slight differences in point of impact are no big deal with practice ammo.
Whenever I have custom work done I ALWAYS specify the load I carry. I'll gladly pay for the ammo needed so the gunsmith can sight in with my actually carry load.
Best,
Tim