I've got three.. .. .378, .473, .536...

love 'em.. of course usually I use bases from pistol cartridges...

9mm makes a good 223 load block...

45 ACP makes a good .473 bolt face load block...

don't take up much room and are pretty easy to come by.

"Minus the killings, Washington has one of the lowest crime rates in the Country" Marion Barry, Mayor of Wash DC

“Owning guns is not a right. If it were a right, it would be in the Constitution.” ~Alexandria Ocasio Cortez