I ordered my first batch of Underwood ammo a few weeks ago based on the buzz around the forums and the testing some of the great folks here and other forums have done on various 10mm loads. My 10mm CCO does not have a ramped barrel, and shooting any 180 grain loads around the 1300-1350fps range is not practical nor is it safe with this setup IMO. I decided to try Underwood's 180 grain DE Gold Dot load at 1240fps. I ordered 200 rounds and took 100 of them to the range two weeks ago for testing. I had planned to eventually make this my new SD round (replacing DT). I was able to shoot 26 deliciously hot and accurate rounds. While loading the next mag, the 4th or 5th round would get hung up in the mag, depressing the mag spring and holding it down. I had to slam the mouth down into my hand to get the spring to push the rounds back up to the lips. I tried loading 9 different 10mm mags and none of them would load properly. I tried my Scottsdale, remaining DT and some Atlanta Arms I had on hand and they all loaded fine. My suspicion was that the OAL was a tad long. Calipers were not on hand at the time. I emailed Kevin as soon as I got in the car and he promptly responded, telling me he measured some of the rounds he had from that same batch and found they were loaded at the OAL max. He was unaware of this issue until I emailed him about these rounds, and thanked me for doing so. Before I could thank him for checking up on this I had an email telling me that he was shipping out replacement rounds the following Monday (Friday was the day I tried them) and a call tag to ship the unshot rounds back to him on his dime. By Wednesday I had 200 new rounds in my possession. I measured these and they were right at 1.2487-1.25 OAL. Loaded just fine in all the mags. Kevin stands by his product, and his quick response and desire to resolve the issue is second to none IMO. He will continue to get my business and I will send as many shooters as possible to him in the future.