Starting off with an unusual thing: the third bad primer. CCI Large Rifle Magnum in a black-powder load. And that's third out of two boxes of 100(so far, still working on the second box). Either I'm doing something that sometimes messes with them, or QC ain't what it used to be.
On to results. I'll throw in two things: windy as the dickens the other day, and I wasn't shooting my best with irons; I may have to go to a bigger target and see if that helps.
Note: I was able to set up the Chrony, but I haven't averaged things out yet, I'll add that later.
In no particular order, tried a couple of loads using a 300-grain flat-nose bullet had from Midway on sale, to use for a light practice load. Over 10.0 of Unique,
Speaking of, same bullet over 11.0 of Green Dot
Black load, 68.0 2f (Graf & Sons) under the 500-grain Lee bullet. I could've sworn I had a good hold, but still got this stringing
On a brighter note, I've mentioned before(I think) that the Lee 405-grain bullet doesn't have lube grooves deep or wide enough to work well with black powder, so decided to try it paper patched. The first try was the last trip to this range, it was so-so but promising, so upped it from 68 to 69.0 grains, the bullet cast of pure lead, sized to .452", two-wrap onionskin patch, then wiped with lube and sized to .459
With smokeless using the 330-grain Lyman hollowpoint, my load for it is going to be this: 29.5 A5744, the bullet cast of pure or 30-1 and paper-patched with the same procedure as the 405 grain.
Oddly, the bare-bullet group averaged 1596fps, but only got one reading for the paper-patched, 1461fps. Apparently the position of the target put the bullet path right on the edge of the Chrony being able to detect it as the other four shots all had an error reading. The one time previously I was able to chrony that load it was ~1530fps, so either an anomalous reading or something strange with that one. I'll be trying it again, and will make a point of getting better velocity readings.
The rest of the shooting that day was zeroing the .338 Federal project rifle after installing the new risers and rings, and some 'just for fun' shooting.