Which Maltby forged irons have the leading edge/bounce similar the to ST-I irons ?
The PTM Forged has the most bounce of all the forged designs. From the 5 to the GW the bounce numbers are identical to the STi. Of course, the STi has a SW. The PTM does not, and the PTM has a 4 iron. The STi does not. https://www.golfworks.com/maltby-ptm-forged-iron-heads/p/ma0285/
STi bounce numbers beginning with the 5: 5,5,6,6,7,8,9 (SW has 10*)
PTM bounce numbers beginning with the 5: 5,5,6,6,7,8,9 (no SW; 4 iron has 4*)
Hope this helps you! Michael