Newb Question on Reloading 9mm for Glock

[JIB83]

[3fcattle]

[JIB83]

[TomReloaded]

Max oal for any 9mm load is 1.169. Realistically, it's 1.150" max. You're way over. People will often load closer to 1.100.

[Sheldon]

The Hodgdon site shows a starting charge of 4.2 grains and a maximum charge of 4.8 grains. Load a hotter charge of powder or get a lighter recoil spring for the Glock. Some guns are more tolerant of lighter loaded ammo. I have found Glocks to not like lighter loaded ammo. Load batches in increments of higher charges till you find the range your gun needs to function reliably. Paying attention to pressure signs and data table max limits of course.

[JIB83]

Max oal for any 9mm load is 1.169. Realistically, it's 1.150" max. You're way over. People will often load closer to 1.100.

[JIB83]

The Hodgdon site shows a starting charge of 4.2 grains and a maximum charge of 4.8 grains. Load a hotter charge of powder or get a lighter recoil spring for the Glock.

Hosgdon site shows 4.3 for RN. I loaded them to 4.2gr. Would it be ok to go over?


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[Sheldon]

You are looking at Lead RN....LRN. Lead typically loaded to slower velocities because of possible leading. You stated you are using FMJ full metal jacketed. The full metal jacked can withstand higher pressures and velocities without leading issues.

[3fcattle]

[JIB83]

You are looking at Lead RN....LRN. Lead typically loaded to slower velocities because of possible leading. You stated you are using FMJ full metal jacketed. The full metal jacked can withstand higher pressures and velocities without leading issues.

[Sheldon]

That is copper plated bullets and a lot of people load them to lead bullet data. I tend to push them closer to jacketed data. I looked at the Hodgdon website and the lead round nose data for 9mm 115 gr bullet shows a max charge of 4.3 gr of powder. The jacketed data goes up to 4.8 gr. I bet you up the charge a couple tenths of a grain and you will get reliable functioning rounds.

[TomReloaded]

It's really diameter that matters. Those are 356 bullets, your max is 4.3gr. the other data is for 355 bullets.

But 0.10 long waaay drops pressure.

[Sheldon]

The .356 diameter is more typical of lead bullets, but plated are softer than a true jacketed bullet, so I doubt it will be an issue.

Manuals are a guide. Your barrel, primer, case, and powder all maybe the same type as the one listed in the data table used to developer the data for the manufacturer. But your setup and lots of components will vary some, so there will be variations in your results. Your adjustments shouldn't grossly different but some variances are expected.


Bullet shapes for even the same type of profile vary greatly. Overall length stated for one manufacturer may not work for another. Then barrel chamber variations along with the rifling engagement can add a lot of factors to consider when setting up dies. It is a bit of trial and error.

[JIB83]

[Sheldon]

That sounds ok, but I think your OAL is a bit short for a 115 gr fmj profile bullet. You can probably load to max 1.169" and be fine.....assuming they drop in barrel chamber fine...plunk test.