Drat you guys, anyway.
Reading the posts herein got me to thinking......ya know, I don't have any 45/70 loading blocks at all here. I have loaded the caliber for 20+ years, but never used a block. I see a near-term project ahead.
I have made loading blocks from pieces of 2' x 4" studs, none too elegant but hell for utility and sized for 308/30-06 case work, 4 rows of 10, 2 blocks are deep-holed and one is shallower (for 40 S&W and 45 ACP and Colt. Mine won't be nearly as nice as Ben's products, but ugly is as ugly does.
After Thanksgiving.