Has anyone seen gel tests of the Geco 158 grain truncated cone FP FMJ .38 & .357 rounds?
My understanding is that a truncated cone FP is a very different critter than a round nose projectile. More like a FP hardcast or the LSWC profile, which are well respected for their effectiveness in spite of not expanding.
These rounds come up at reasonably affordable prices for rimmed cases, and Geco seems to make some reasonably high quality stuff.