"Could it be possible that the addition of gas checks will reduce/virtually eiminate dangerous leading within the context of a Glock? "
Doubtful. Gas checks are mainly useful in really high speed cast loads, like about1,500 + fps. Not many autoloader bullets attain those speeds.
A Glock owning friend of mine often shoots my cast .45 ACP stuff, no leading, excellant accuracy and flawless function. Heck, his costly pistol is almost as good as my surplus 1911!
