S&B 124gr 9mm
I've been a fan of Sellier & Bellot for over 20 years and when I found that bulk 115gr from various companies (Blazer, Winchester, etc) could lead to malfunctions in my Mag-Na-Port ported Glock 19, I decided to step up a little in power to see if that helped solve the issue. Despite costing a little more than various 115gr options, the S&B 124gr did NOT disappoint. I fired 100rds to function test the lost with zero issues, then shot another 700rds this week in a class with Chuck Pressburg in inclement weather with tons of mud and rain without a single issue that wasn't mag related. I'm very pleased and will be picking up some more for practice ASAP.