I use UltraMax reman with 147 GoldDots in the carbines. Accuracy and performance are good enough for 100 yard use. I get a slight velocity gain with the 16" barrel but some reports say it doesn't make much difference. At 10-15 yards, the 147 GD bullet will expand to impressive diameter from the carbines.
Your comment about 300 yards is a stretch for 9mm. While I wouldn't want to be hit by a 9mm bullet even at 300 yards, I wouldn't depend on it's use for my medium range rifle.