Please don't think that I am Glock bashing. I don't own one, but by reputation they are very reliable quality pistols. Some people say cast bullets are a no-no in a Glock, and others shoot thousands and thousands of them with no problem. I don't have any personal experience with Glocks to contribute to that conversation.
I was addressing a specific question about H&K pistols. My HK45 is good to go with cast bullets. I recommended that the original poster check the manual that came with his H&K 9 mm to see if it gave the same recommendation.
Tom
Please advise were your HK manual states lead bullets are acceptable. I can not find it in mine nor online?
What kind of ammunition should I use in my HK weapon?
"Use only commercially manufactured ammunition with internal ballistic pressures which are in strict accordance with the specifications of the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI). Be certain all ammunition you use complies with the SAAMI specifications. If you are uncertain, contact your ammunition supplier for verification. If you would like any further information on specific ammunition, you may contact one of the major ammunition manufacturers. "