by Seismic Sam on Wed Jan 04, 2012 9:40 am
Yup. You are correct. In the Lyman manual, where they are talking specifically about lubing bullets, their statement that all the grooves must be filled apply to the lube grooves, (and there can be quite a few of those in some longer rifle bullets) is correct, but this is in a section that applies ONLY to the lube grooves. My guess is that you are reading text, and not internalizing it and visualizing the actual process that is being talked about.
As far as the 38 Spl, it is a black powder cartridge, so it's way too big for smokeless powders, and four grains of Bullseye looks like about as much pepper as you'd put on a fried egg. You absolutely need to use load blocks to charge 50 rounds with powder, and then after charging you MUST take the block over to an area under a strong light, and verify that the powder levels are the same. As part of this exercise, you also MUST deliberately double charge several cases randomly in the block of 50, so you can see how big the difference is, and it isn't a lot, but you can pick it up with light shining down the case mouths. You need to keep track with all the calibers you will ever choose if a double charge is possible or not BEFORE you ever load a round. Oh, and using a flashlight to do this is NOT permissible!! You need to see down the mouths of all 50 cases AT ONCE!!