Care to elaborate ? I'm wondering if you've got a 30-06 AP revolver or something interesting like that.
I have a Para-Ornance P-14 with a 6" slide that is converted to 460 Rowland, but Mag Safe has a .45 ACP SWAT load that will do the job if you can find it for sale.
A Taurus "Raging Hornet" in 22 hornet will do it. All you need is velocity. Kevlar behaves much like silly putty. At a certain velocity (about 1800fps) it no longer stretches and deforms, but shatters like glass
I also keep a riot gun loaded with flechette rounds. The flechettes are narrow and sharp enough to go through the weave of the vest. Look for them in Shotgun News
So9
Heh ... then my 454 should do the job no problem ....
Sounds like you've got some nice toys there.