buttonbuck said:
Hey brown bear what drill bit size do you use for the block for a 32 cal. Say a 311 cast rb and a .018 or a 315 and a .015 drill cloth patch? a 5/16" or 9/32" now I know what to do with the walnut slabs I have squirreled away.
There's a handy reference on bit sizes for loading blocks
here on the site. I couldn't locate the recommended 21/64 bit from local sources, so I just used a 5/16 like you suggest. Actually I kinda wonder about the 21/64, because by the time I sanded just a little to smooth the hole from a 5/16, the holes were almost too loose for my taste with .015 patches and .311 Lee balls. It's fine with the same ball and .018 ticking patches lubed "at the muzzle" with my own grease-type lube.
To load the block I lube my ticking strip, stack the ball on it and push it through to the depth I want and cut with a sharp knife, just as I do at the muzzle. It leaves you with no patching showing above the block, which is good with those tiny balls. They don't have a whole lot of grip even in a tight hole, and protruding patch is kinda easy to snag in a bag or on brush. Especially with that tiny little ball and cold hands, seating deep enough to have some ball sticking out the bottom really helps you "find" the muzzle when you're loading quick for a second shot. I've had snowshoe hare stay frozen for awhile after a miss, and if you're quick at your loading, you can often get off a second shot.
A little bit of countersink sure helps seating in the block. Doesn't take a lot, just enough to kinda break the sharp edge on the hole at the top of the block.
As for # of holes per block, I've finally settled on 3 being about right. It's a tiny block, but it just works better for me to have several in my bag and move between them rather than trying to have one big block, for hunting anyway. Each block has it's own short thong to let me tie it to my bag strap. I don't like dangly manure hanging from a bag when I'm moving through tight brush on a hare hunt, so I just shove it down into the bag when I'm moving. But it's real handy having that thong when you're loading quick and prone to dropping stuff. After the shot it's kinda nice to shove it down in the bag and forget it, rather than digging through the snow or tall grass to find a dropped block.