The 110 and 125 grain hyper velocity loads in 357 Magnum came about in the 1970's and 80's, an era when jacketed bullet expansion required very high velocity. Super-Vel was the first, then Federal, Remington, and Winchester came out with their versions of hyper velocity, light weight bullet loads.
The hyper velocity 110 grain loads tended to have fantastic expansion, but poor penetration against 2-legged miscreants. The 125 grain loads still had fantastic expansion, but would also penetrate well and quickly became the load of choice for law enforcement. With modern jacket materials and the ability to make jackets with long, deep skives, hyper velocity is no longer needed for reliable expansion.
