hey, I started to venture into lead bullets in 9mm and am running into an issue. I seem to have either leading or coating residue in the barrel. This is out of a 5th gen G19, less than 50rnds fired during this session.
I previously loaded 1000 with N340 and have fired about 200 of them with no problems. other than a bit more fouling than normal, no crazy buildup like this.
I am switching over to HP38, as N340 is no longer available in my area.
I had some prior testing done with this powder and bullet but had not finalized on a load. I did some testing to see what would work
G19 5th gen, marksman barrel
Brazos 125g hi-tek coated .3579 over sized) cast lead BHN of about 13
Loaded to 1.145 (to pass plunk test)
Winchester small rifle primers (out of small pistol)
Did some testing yesterday. not sure if it is an issue with a specific powder charge, or the bullets in general. fired 7 rounds of each over the chrono for the following averages.
7-4.4 1086fps
7-4.5 1096fps
7-4.6 1126fps
7-4.7 1142fps
7-4.8 1156fps
After testing I went to clean my barrel and noticed some heavy fouling. I only fired these, plus 6 of my other loads to ensure the chrono was working properly, less than 50rnds.
Interestingly, the leading does not start until about 1in down the barrel.
Could this be an issue with this powder as HP38 is several powders faster than N340? the N340 velocities were about 1090 so in the same ball park.
Not sure when the leading started. I supposed at this point all I can do it clean it. Load some more at 4.4 and see if the leading still occurs.
Update: While cleaning out the fouling, it does not seem to be lead. I think it is the hi-tek coating. It is soft and plasticky, reminds me of wad fouling from shotguns.
I previously loaded 1000 with N340 and have fired about 200 of them with no problems. other than a bit more fouling than normal, no crazy buildup like this.
I am switching over to HP38, as N340 is no longer available in my area.
I had some prior testing done with this powder and bullet but had not finalized on a load. I did some testing to see what would work
G19 5th gen, marksman barrel
Brazos 125g hi-tek coated .3579 over sized) cast lead BHN of about 13
Loaded to 1.145 (to pass plunk test)
Winchester small rifle primers (out of small pistol)
Did some testing yesterday. not sure if it is an issue with a specific powder charge, or the bullets in general. fired 7 rounds of each over the chrono for the following averages.
7-4.4 1086fps
7-4.5 1096fps
7-4.6 1126fps
7-4.7 1142fps
7-4.8 1156fps
After testing I went to clean my barrel and noticed some heavy fouling. I only fired these, plus 6 of my other loads to ensure the chrono was working properly, less than 50rnds.
Interestingly, the leading does not start until about 1in down the barrel.
Could this be an issue with this powder as HP38 is several powders faster than N340? the N340 velocities were about 1090 so in the same ball park.
Not sure when the leading started. I supposed at this point all I can do it clean it. Load some more at 4.4 and see if the leading still occurs.
Update: While cleaning out the fouling, it does not seem to be lead. I think it is the hi-tek coating. It is soft and plasticky, reminds me of wad fouling from shotguns.
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