If you really want to ported your Bisley Mag-Na-Port 2 port is the best
See links one for general porting on handgun the other on conversion and porting with costs
http://www.magnaport.com/hgun.htmlhttp://www.magnaport.com/conv.htmlpro : porting will make your handgun more easy to handle even with hot loads and heavy bullets
con :
-porting will make your hadgun very noisy
-if you hunt with porting gun wear hearing protection it is more comfortable
-you can have leading smoke after firing in your face because of porting
-porting will damage a little bit the barrel if you shoot light bullets with hot loads, flames will go out the porting and damege the barrel
My best advice to reduce recoil is to wear shooting gloves like Uncle's Mike shooting gloves, if you don't use it, buy it to know if you need to get a porting on your gun. Just my 0.02 cts.