I picked up a P226 .40 today. It has the DAK trigger which seems to compliment the double action of my 686+ really well. I like the gun but it doesn't want to cycle my bunny fart practice loads. I could up the charge but that increases noise which aggravates my tinnitus. SIG shooters, can I swap in a 9mm recoil spring for practice sessions without harming the gun? I run a light spring in my SIG 1911 .40 with good results.