Yea I have had to lower my 200 grain hard cast load to 1150 in my Glock 40 which is 1060 in a 5 inch Kimber 10mm I also own. To ensure reliability for both guns one handed and left handed. I have lowered this load 3 times started at 1270 was only reliable with 2 hands. Then 1200 was good in the Glock but not the Kimber. So far so good at the 1150 for the Glock and 1060 for the Kimber