Tried that steel-case 06 and it is very hard to put the clip in far enough for the bolt to close. Chambered and fired fine after that. Fortunately, a range buddy would buy the whole case from me for his non-Garand rifles. The other surprise was that CCI shotshells in 45acp (Thanks Mark!) actually cycled reliably in a Glock 21. Pattern was about 4" at 10ft and quite even, penetration was limited to about 1/2" print magazine. Might work on snakes.
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