Hello - I Am Searching For The Highest Capacity, Reliable Magazine For The Sig P229R (.40 S&W). I currently utilize 15-round Sig P226 .40 S&W magazines in my 229R and they work wonderfully. ProMag seems to make a 20-round, .40 S&W magazine for the Sig P226. Has anyone tried these and, if so, would you recommend them? Are there any other possibilities out there for magazines in excess of 15 rounds that will work in the Sig P229 (.40 S&W)? Thank you!