This may seem like an oxymoron to some, but I firmly believe that they exist. I have a Glock 17L and a S&W 659 with a Bar Sto barrel, not to mention a Glock 17 with a Wilson barrel. All show potential. So, what bullets for starters? I have not seen any decent ("match") bullets in 115 grain configuration. There are 121 gr and 124 grain HAP bullets but some are in .356 size rather than .355.
Personal experience? Please note that I am talking about groups that should be of 10 ring size at 25 yards, not the "one ragged hole" at 15 feet that the gun writers like to talk about!
Thanks, Peter.

Well, as I remember my 17L liked 122 grain lead flat points in competition with Unique as the powder. I do not remember the load. I did not try to hot rod them as I was satisfied with "minor" classification in IPSC. It was good enough to get me to Nationals a looooong time ago. My Glock 19 is showing promise with a Lone Wolf barrel and 3.6 grains of Titegroup.

Larry, you were shooting lead out of the standard Glock barrel, or did you have a replacement? Not trying to hot rod it, just get the most accuracy. I do have I 9x21 that makes major though!
Peter.

I used the factory barrel. I had about 200K rounds through it when Glock bought it back from me for testing. They never put that many rounds through the 17L before. That was 1990. I would say that I shot 90-95% lead through it and sometimes didn't get around to cleaning it for 5K rounds.

I have never had an issue with lead through the factory barrels, BUT I would not do it in a Gen 1 40S&W. They DID have issues, but I have not seen anything on it for the last 10 years when Glock changed their barrels.

Some success with the Glock 17 (Wilson Barrel):



Load was 6.1 grains HS-6 and 121 gr. JHP (HAP?) bullet.
Peter.

Horizontal stringing in the group is from the Glock trigger. The squishy Glock linkage is going to be your principal obstruction to accuracy. If you weren't pulling and pushing the gun side to side, all your holes would be pretty much in the same spot.

Hmmm! Interesting JD. I will try to watch for that next time!
Peter.

Peter, I usually don't recommend lead bullet loads in Glocks, but since you have a Wilson replacement barrel in your glock it should be OK with lead bullets.

For accuracy, I like the 145-147 gr. BBFP sized to .356".

Works good with several different powders when loaded to 875-900 fps. Stay away from the slow burning powders like HS-6, Blue Dot, etc. Stick with the faster burning powders like W231, AA5, on up to Unique in burn range.

Use a slight taper crimp. OAL may vary from what I'm showing here just depending on the bullet design you settle on.



PS - JD's diagnosis of the horizontal stringing sounds like something to check into.

some time ago (like before the model 952 came about) i played around with a mod 39. since the mod 52 was so accurate i used the 147 gr bullet with 2.7 grains of bullseye in the 39. it printed just wonderful but would function. thus i played with recoil springs until it would

Thanks gentlemen. I think I am going to order some Montana Gold 9mm (jacketed) bullets and work up some loads for those. I have plenty of lead TC bullets but will leave those for practice. My 659 shoots them pretty well.
Peter.