Good news! No issues with the 11.8gr of Accurate 7. No bulging, primers seemed fine, no leaks or cracks. Only real issue was that I had a ton of light primer strikes. 4 out of 60 fired is not something I like to see; the primers looked like they weren't hit hard enough, with the divet being quite shallow. They'd fire after careful refeeding though... Possible they're seated too deep, or is my pistol to blame?

Obviously recoil was snappy, but not terrible.

Huh, that I didn't actually know. Up until now all of my reloads were 9mm, so I'm relatively new to this.

and I was starting at 10.5. I know it's a grain above book starting load and not starting at the minimum is a bit of a faux pas, but I was a bit short on powder and bullets to experiment with. My primary concern is if the Hornady data is somehow out of date or just wrong for the powder.

Ah! Fresh Starline brass. I figured if I was testing a new load to use good fresh brass. After that is used I'll probably back the load off and reuse it (assuming it's still in good shape), as well as some Armscor, Sellier and Bellot, and Sig brass. The Sig stuff I was impressed with performance wise, and I wanted something with a bit less umpf, probably between the S&B and the Sig. From what I could find, it was actually loaded above what manuals recommended, but even that didn't get me any deformed brass or smileys, so I was impressed. Considering it's the cheapest I can buy locally (S&B is cheaper still, but has to be ordered online so.... Shipping costs for ammo), I was pretty happy. Brass looks good too.

Oh I intend to. Was probably going to go 10.5, 11, and 11.5. I'm suspecting I'll probably hit that 1150 mark before that 11.5 point the book says though, and that's fine with me. Honestly not too terribly interested in reaching a maximum velocity. Reason for using Accurate #7 was that I may experiment with using it on 9mm for my CZ Scorpion. Accurate 5 is too fast for 10mm probably, while 9 is too slow for the 9mm. Wanted to see if I could get good results on both using the same powder and just stock up on that.

New to the forums here!

I was looking at the Hornady 9th Edition Manual. I wanted to load up 180gr FMJ bullets to something similar to what my factory ammo has been, roughly 1150fps listed. Looking at the manual that would take about 11.5gr of powder. Ended up screwing up measuring my powder load and found that the powder measure was throwing 11.8gr (this is why I double check with two scales periodically), but that's still well below the 12gr maximum listed in the manual. So all is well, have a few test loads leading up to that to make sure that I don't blow up my Glock 20, as well as the reassurance that 10mm reload data is always a bit conservative a COL that's a tad over the 1.260" to avoid overpressure from that.

However, after doing a little reading, I ran into a problem. All my other load data shows that Hornady's data seems to be very... generous. Their 12gr listed maximum is a full grain above what I see anyone else at for 180gr bullets, and they all peak at around the high 1100's in terms of FPS. However, all of the other load data is either for plated bullets, or for hollow points. So I am not sure if Hornady is somehow wrong with regards to this bullet/ powder combo (I am doubtful, since Accurate #7 would probably be one of the more popular powders for a cartridge like this), or if the other load data just doesn't apply to FMJ bullets [seems weird that out of Lymans, Lee, and Accurate's own load data, none of them apply to 180gr FMJ].

Is anyone who is actually using Accurate #7 with 180gr FMJ-Flat Nose bullets able to shed light on whether or not the listed data in the manual is just wrong or dangerous?

Load is as follows:

• Hornady 180gr FMJ-FN
• 11.8gr of Accurate #7
• 1.262 COL
• Winchester LP Primer