Hi,, this is my first post/question,, hope someone can answer this. i picked up an Ideal mold/ tong tool for my W&H [ H&R ] 38-55 target rifle,, it's casting a 240 gr taper boolit,, first band in front of the crimp groove is .374, the base is .377 after i run it through the sizer in the handle,, i've been told that they were sized so they could clear powder fouling and would bump up to fill the groove's when fired,,this mold is from the late 1800's i'm guessing,,the green mountain barrel on this 38-55 is .374-.378 with shallow lands,,if i run the lead soft enough to bump up [30 or 40/1 ] will i strip with BP loads ?? any thoughts would be appreaciated,, i was going to run PP but found this complete tong tool set and would realy like to put it back to use,,