I have had problems. I reload 147gr FN Bayou Bullets subsonic for IDPA to make power factor. I have fired thousands of rounds through an assortment of pistol manufacturers without a single issue. I bought my Scorpion in September. I took to the range a few times and shot one match without issues. Two weeks ago, I had three failure to feed issues out of five stages. (Needless to say, my time was awful that day.) The range owner is a gunsmith. He thought my issue was due to the flat nose on my bullets. I see this a similar to feeding difficulties of HP ammo on some manufacturers of 1911s that were designed 100 years ago for 230gr RN bullets.
I bought 100 rounds of conventional 115 gr FMJ. Shot on Saturday flawlessly. My experience tells me that it is not an issue with 147 gr subsonic, per se, but rather bullet profile.