You've read them here before, but I thought I'd share my moment of brain lapse with you today. I found a box of 100 pcs of 122gr lead truncated cone 9mm bullets in my man cave closet earlier this week. Been around for 5 or 6 years, so I thought I'd load them and shoot today for "free" so to speak. My normal load for these bullets is 3.6 grains of Hogdon Tite Group. Very accurate load in my Beretta.
Well, I shot about 50 rounds this morning, and accuracy got progressively worse as I went along. Thought it was me so I switched to a .22. Nope, I'm okay, must be something else wrong. Back to the 9mm. Accuracy kept getting worse as I went. Then, the last 10 shots started to keyhole, with the last 4 or 5 hitting the target perfectly turned at 90 degrees, nice little outline of the TC bullets in the paper.
Field stripped the pistol just now and the barrel is badly leaded. For the life of me I couldn't figure out why. Then it dawned on me, check the powder charge! My volume drop was still set up, so I did a few powder drops and weighed it. 4.6 grains! Max load according to Hogdon's is 4.1 grains. I was 0.5 grains over the max load! I loaded 4.6 instead of 3.6.
No damage that I can see, except a badly leaded barrel that will take some time to clean.
Be carful out there folks!
Well, I shot about 50 rounds this morning, and accuracy got progressively worse as I went along. Thought it was me so I switched to a .22. Nope, I'm okay, must be something else wrong. Back to the 9mm. Accuracy kept getting worse as I went. Then, the last 10 shots started to keyhole, with the last 4 or 5 hitting the target perfectly turned at 90 degrees, nice little outline of the TC bullets in the paper.
Field stripped the pistol just now and the barrel is badly leaded. For the life of me I couldn't figure out why. Then it dawned on me, check the powder charge! My volume drop was still set up, so I did a few powder drops and weighed it. 4.6 grains! Max load according to Hogdon's is 4.1 grains. I was 0.5 grains over the max load! I loaded 4.6 instead of 3.6.
No damage that I can see, except a badly leaded barrel that will take some time to clean.
Be carful out there folks!