Shaler bullet solid base

[CWLeadManiac]

Just wondering if anyone has ever seen a Shaler 3 piece bullet with the base piece having a flat, solid base instead of a conical base? I bought a box of various ACW bullets and I found a .58cal piece that looks like it could be a Shaler bottom piece but it has a flat base. Thanks for any info!

 

[JOHN42768]

Post a couple of photos and see what others think it might be