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I am sorry if I am stepping on some of the "Forum Kings" toes by questioning what they have to say.
If you're talking about me, I'm not a king of anything. If you're talking about Gale McMillan, I wouldn't call him a forum king, I would call him a person who has a LOT of experience designing, making and selling barrels. But it's not about you contradicting or questioning someone on this forum, it's about contradicting what the manufacturer says and what the experts recommend.
Here's what it boils down to, IMO. I can't claim that I always follow manufacturer's instructions. BUT, I try to draw the line at encouraging others to ignore what the manufacturer recommends, and certainly would never criticize someone for obeying their manual.
You and I don't have access to the same testing equipment and expertise that a typical gun manufacturer has and therefore it's questionable at best for us to represent our opinions as having the same weight as the test results of the true experts (those who design, manufacture and test guns for a living). A typical factory has tested hundreds, if not thousands of firearms, fired more rounds in a day than you and I do in a really busy year or two, owns and uses test equipment that you and I couldn't afford with a lifetime of earnings, and has many engineers and designers on their staff, most with far more training and experience than you or I will ever have.
I realize that it's common for manufacturers to play the CYA game by being overly conservative in their recommendations, but if you think about it, they're trying to CYA by preventing incidents that could cause them problems. A little thought will make it clear that the "incidents" that they want to prevent are almost certainly incidents that you and I want to prevent as well...
The things posted on this forum stay here for a long time and become, to some extent, a permanent record. If you do an internet search on various gun related topics, it's extremely likely that within a page or two, you'll find a THR post referenced. It's not so much a matter of someone's toes getting stepped on, it's a matter of how many people will read this in the years that it stays on the web. I feel that this topic is important enough that both views needed to be represented on the thread so that folks who pull it up for information don't get just one side of the story.
I think I said, "The tests proved to me".
IMO, even this comment is an overstatement. You may be personally satisfied, but that doesn't mean that anything has been proved to anyone. A few thousand rounds of lead bullets through a Glock barrel only proves that either you have been very careful, very lucky, or both.
Think of it this way. There was a huge furor over the frame rail separation issue with the Glocks awhile back. BUT, only one gun out of every few hundred was likely to have the problem. Yet people were outraged, and Glock ended up replacing ALL the guns that MIGHT be affected, whether damaged or not. Here is a similar issue. Maybe only one person out of some relatively large number of people using lead bullets will cause a Glock blow up, but why should we be any less worried about this issue? Why should a small chance of a gun failure due to a non-recommended reloading practice be any less of an issue than a small chance of a gun failure due to a manufacturing problem?