-- none of the bullets have met my accuracy goals, but for what it's worth the 180 and 200 gr. GC have been the better performers, so I'll focus on those weights for a while. If I get bored perhaps I could try a 170 or a 190.

-- initially, coated GC seemed to have better velocity variation, but now that I have more data the coated GC seems to vary just as much as uncoated. Since coating does not seem to enhance GC performance in this particular gun, I will transition to uncoated GC.
-- a lot of people think crimp is important in magnum wheelgun loads, but I have found that bullet pull is influenced more by neck tension and seating depth. That is especially true in a thin case like the 357. Crimp doesn't seem to make a noticeable difference in this 357.
-- at the beginning of this project I was using a 0.354" expander plug, but somewhere along the way switched to a 0.3565" expander plug. I like the 0.354" expander for hard bullets, but I made the 0.3565" plug when I was playing with coated air-cooled plain base so they would not get damaged by excessive neck tension. I'll transition back to the 0.354" expander because increased neck tension might help with the lousy velocity variation that I've been seeing lately.
-- not surprisingly, best accuracy seems to be with the bullet seated as far out as possible, so from now on I will design bullets with that in mind.
-- even though crimp does not seem to matter in this gun, I would still like to have the option of crimping, so I will transition to bullets with a real crimp groove.
-- I can think of 3 things that might explain the diagonal dispersion. 1) trigger pull moving the gun (but mostly side to side, not up and down) 2) variation in grip changing how the gun moves in recoil, particularly if the grip is such that the gun twists in recoil rather than coming straight back 3) wind. Yes, wind affects vertical as well as horizontal. The prevailing wind on my range is from 3 - 5 o'clock and that would do it. However, even targets shot in calm conditions still show the diagonal dispersion, so I can't blame it all on wind.
With regards to trigger pull and grip, there is no substitute for practice. This project should help me get back "into shape" for handgun shooting.

-- I've generally had better luck with bevel base bullets than with square plain base bullets, and that trend seems to continue in this gun. At a minimum the BB are no worse than square plain base.
-- some bullets recovered from the berm showed grooves nearly wiped out. To be sure of what is happening to the bullets I need to fire them into my water tank -- only problem is that water tends to be frozen at this time of year!

In general, I don't think this gun is shooting as well as it should. I don't expect it to shoot as well as a line-bored revolver, but it should shoot better than the average factory revolver. My expectation is 2 - 3 MOA. Maybe it is not up to the job, but I'm going to try.
