I ahve found a load using 3031 for my 38-55 that hits about 1800 fps using the plain based Lee bullet. Somewhere, probably the Lyman manual, I remember reading that plain based bullets should be kept around 1600 or so or they will lead. My bore miked at 377 and I use a 379 bullet but fairly soft for hunting. I also lube with Lee liquid alox and apply lube in the lube grooves when I size them to 379. Have to size them to chamber them. Just curious if others exceed that 1600 fps with their plain based bullets in whatever they shoot. I ahve used the same alloy with good effect at 2000 with gas checks.