Is Speer handgun data questionable? (9mm specific)

[mstreddy]

My very first attempt ever at reloading was using Speer's data, as their 124grain TMJ-RN bullets were the exact same length as the 124g Armscorp FMJ-RN bullets I had on hand. Their starting load using Power Pistol with this bullet, at 1.135" OAL, is 5.6 grains. I duplicated this load, with the only exceptions being my OAL very slightly increased to 1.140 OAL (average), and using Winchester primers instead of CCI.

One thing I'll mention the Speer TMJ is plated. It's thick plating but still plated. That may account for the difference in their load data vs FMJ data in other books/sources.

 

[Ghost In The Fog]

Read the thread in the link.

Doh!
I've only been doing this internet thing since 1992, you'd think I would have it down by now. LOL and great thread in the link.