Stu, I too have heard the rumors about 147 not being as reliable to feed as lesser weights, but have yet to see this in person.
When I was going through the academy we were using remanufactured 147 grain ammo and i could probably count on both hands how many FTFeed or FTE happened the whole time with all the students. 20 students X 5,000+ rounds = 100,000 rounds fired, and 10+/- malfunctions = 1 in 10,000 rounds had any issues. Of course we were using Glock 17's, so we started with a damn decent pistol in the 1st place.(funny thing is, more math, these were 5 years old. 3 classes a year x 5 years = a possibility of 75,000 rounds through these monsters! and they showed it!!!)
For fun they let us shoot these rounds at 50-75-100 yards. There was 0 hold over needed to get them to hit on target. While it was a total pain in the ass to differentiate between a head shot and a body shot until you walked up to the targets, the steel still made a fantastic noise when you hit it, and the class average was better tha 50% of shots at 100 yards finding steel.
I also have a buddy working for a mountain S.O. that issues him 147gr stuff for his G17. No problems on his end either... Plus being subsonic, there is less chance of him triggering an avalanche!
In conclusion, im a firm believer in the 147gr rounds. I see no problems with them feeding in any modern pistol, and would trust them in any situation.
Throw a baseball, not a tennis ball :-D