Bought the new Glock G19 Gen 5 MOS for carry and GSSF matches.
Love the ergonomics and for fast combat drills, it is perfect and points extremely well for me.
However, for GSSF indoor matches, where I have to put 10 rounds inside of an 8" circle at 25yds in 15 seconds, accuracy is paramount. My first GSSF gun was a G29 in 10mm, since that was the only Glock I owned. It will do consistent sub 2" groups at 25yds and the occasional 1" group. I bought a G35 just for GSSF and it will do consistent 2" or better groups at 25yds.
But this G19 is consistently inconsistent in it's groups. One load will do 2" or so, and then vary wildly from 2" to 5".
I tried ten new recipes today and around 200 rounds.
I really hate loading for the 9mm as it seems much more finicky and seems impossible to nail down trends. With the 10mm and .40 S&W, I can easily tell which gun prefers heavier bullets and which prefers lighter bullets. With this gun, I was sure it preferred lighter bullets, but then today a 147gr XTP delivered a decent group once or twice, then awful groups later. Same load.
Searched for the most popular and accurate 9mm loads online, and they were mediocre in my gun. But then I'd get a good 2" group and the next two attempts would double that size.
The pistol is equipped with a red dot sight, and that really helped tighten things up. I also installed a Glock (-) connector and now the trigger pull is a decent 4.5lb pull.
Not sure if the inconsistency is in my booger hook, aging eyes, or somewhere in the loads.
The new Gen 5 Glocks have pretty shallow throats, so I've run into issues getting them to plunk with some round nose profiles in larger bullet weights without seating them pretty deep.
But I've also tried 5 different powders, 10 or so different bullets, and various charges and OALs. I still have no idea what the gun likes!!
I thought about maybe decreasing the distance from 25yds to 20yds to see if that would help eliminate the human error factor. Thoughts?
Here are some of the consistently inconsistent results...
147gr XTPs...
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124gr XTPs...
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