Glock has a rifling issue that does not allow the use of lead bullets, some owners have done it with no issues. The brass from a Glock 23 is said to have an issue as to suitability for reloading. You might take a look at a S&W M&P which does not appear to have these issues and compare it.....JJ

It doesn't appear you are not using lead bullets so the Polygonal issue is not a concern. the 19 is a 9mm and I have loaded brass from Glock 9mm's over and over many times.

I would purchase a better quality powder dispenser. I mean it, Lee is adequate but if you want to control your charge very precisely and very accurately you need a RCBS or comparable powder drop. For like 70 bucks you can get the RCBS Uni Flow. You will have no problems tweeking to an exact weight and keeping it very consistant.

I am not a Representative of Unique / Alliant or any company with any knowlege of reloading and I am not offering any advice that should be considered or tested out. This is just a statement of my personal experiance in a feild that is my hobby and that I claim no authority nor do I pretend to know that what I say is accurate in any case other then my own past.

In 9mm under a 115 FMJ 4.2g of Unique is considerably weak and below recomended charge from the maker of the powder. If the Powder is Bullseye then it is a different story although it is at the botton of what the rcomended levels are. I do not use Unique any more when I load 9mm and will not use it. The min I remember for Unique under a 115 FMJ was in the neighborhood of 5.7g. I will be right back.....

Alliant Powder - Reloader's Guide

This is what I found on a quick search and it does appear that my experiance may or may not coinside with Uniques recomendations. I also do not load the FMJ and the hollow points to the same OAL, but that is not a recomendation it is a recount of my experiance.

Good luck in your hobby reloading is a very fun and rewarding thing to do. It pays to be anal

Thanks for your replies. I was a little stressed about possibly blowing up my new Glock, but I think I will be fine. I just ordered a screw adjustable Lee auto disk which should throw any charge I want and keep it dialed in, I just have to play with it first to get my desired load. I think I will start with the minimum load of 5.1grs of Unique per my Lee manual.

I reload for 2 Glocks, one in 40 S&W and one in 10mm. Never had a problem but I use common sense. I do run some hot rounds and reload lead, plated and jacketed bullets. Later model Glocks do not have the problem some earlier models "may" have had.
As to ka-booms any firearm will go boom with bad ammo.
Just go with good published data and components and should have no problems.

Please do not go below a minimum load!Certain powders will detonate if you are below min.,I can't tell you the physics of it but the pressure spikes fast and a doublecharge can do less damage.Last one I saw was a 357 missing the cylender from the basepin up,the topstrap was peeled 180 back over the sight and the barrel and frame were pointing toward the ground.Min loads are published for a reason,if you don't know powders and their characteristics you might regret it.296 and it's equivolent H110 will do it easily,that's why they have a very narrow load range.

You can shoot lead in Glocks exclusively if you want,poly bore has nothing to do with it or HK would say it too.If you pick the right diameter and hardness you'll be fine.Glocks were known to fire out of battery and I suspect this was the biggest reason they say this,leading builds up in the leade and starts shortening the headspace.

I just recently tried my Rainier bullets with my chrono.
115 Gr RN under 4.7 Gr of Unique is flying 1135-1150 fps (My Glock 19 is 10 fps slower than Beretta due to barrel length). OAL=1.165"
I also tried 5 Gr - and it goes beyond 1210 fps. Somehow the load data on the Rainier web site is different (a lot different) from what I experienced. It says the max is 5.3 Gr and speed is 1092 fps (much less than my data). The link is below.
I almost don't crimp it (0.380 - 0.379)

P.S. I'm using Dillon xl 650

Midway

Originally Posted by recoilguy

It doesn't appear you are not using lead bullets so the Polygonal issue is not a concern. the 19 is a 9mm and I have loaded brass from Glock 9mm's over and over many times.

I would purchase a better quality powder dispenser. I mean it, Lee is adequate but if you want to control your charge very precisely and very accurately you need a RCBS or comparable powder drop. For like 70 bucks you can get the RCBS Uni Flow. You will have no problems tweeking to an exact weight and keeping it very consistant.

I am not a Representative of Unique / Alliant or any company with any knowlege of reloading and I am not offering any advice that should be considered or tested out. This is just a statement of my personal experiance in a feild that is my hobby and that I claim no authority nor do I pretend to know that what I say is accurate in any case other then my own past.

In 9mm under a 115 FMJ 4.2g of Unique is considerably weak and below recomended charge from the maker of the powder. If the Powder is Bullseye then it is a different story although it is at the botton of what the rcomended levels are. I do not use Unique any more when I load 9mm and will not use it. The min I remember for Unique under a 115 FMJ was in the neighborhood of 5.7g. I will be right back.....

Alliant Powder - Reloader's Guide

This is what I found on a quick search and it does appear that my experiance may or may not coinside with Uniques recomendations. I also do not load the FMJ and the hollow points to the same OAL, but that is not a recomendation it is a recount of my experiance.

Good luck in your hobby reloading is a very fun and rewarding thing to do. It pays to be anal