Hi Craig, I just visited with Tom Armbrust yesterday about these.I measured the ones I got and tried them in several different brand new hulls and they fit a little loose in a couple.Powder migration might be a factor with some powders.Im going to load some up and send to him for testing,and probably place a nitro card over the powder under the wad.I have done this before and had Tom test them.He says pressure would probably be a bit higher just because of a better gas seal.Makes sense.Its one thing loading them and carry a few in your pocket verses shipping them several hundred miles for testing bouncing around in a truck for a day, powder migration could be significant.
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