CAUTION: The following post (or a page linked to) includes or discusses loading data not covered by currently published sources of tested data for this cartridge (QuickLOAD or Gordon's Reloading Tool data is not professionally tested). USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assumes any liability for any damage or injury resulting from the use of this information.
I have finished developing the loads I plan to use for the XDM Elite 10mm I have. The bullets are 155 grain XTP, and 180 grain XTP. Powder is CFE Pistol.
The data I started with was from Hodgdon. I am using Sig Sauer nickel plated brass from their Elite performance V-Crown ammunition. Primers are Federal GM155M large magnum pistol match primers. All loaded on my single stage Rock Chucker. I use my Rock Chucker for all defensive ammunition, especially during load development. Charges were dropped using the RCBS Uniflow powder measure. All cartridges were seated to have an OAL of 1.255".
Let us start with the 155-grain load. My goal was to reach 1400 fps with a powder that I have on hand or available nearby. The only powder I had that was appropriate and available was CFE Pistol. After reviewing published data I decided CFE pistol would be ok. Plus I load 45 Auto, 9mm Luger, 40 S&W with it as well. Needless to say, published data did not get me there. I gradually increased charge weights until arriving at the ones I will list here today. I still have no signs of over-pressure at all. All my tested velocities are with Labradar and well within standard velocity ranges for this cartridge.
155 XTP, 9.8 grains CFE Pistol
Avg 1390
SD 8.7
ES 24
180 XTP, 8.3 grains CFE Pistol
Avg 1213
SD 6.4
ES 21
Both loads shoot quite well. At 15 yards I shot a seven-round group with each. Both shot about 1.5" off hand. I am sure this gun would do better from a solid rest. The attached photo is of the group with the 155 grain XTP. I pulled one shot low and left. That was all me. I have no signs of excessive pressure. No cratering, no flattening, no smiles, no bulging, nothing I can find.