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Old December 5, 2012, 07:16 PM   #8
Senior Member
Join Date: February 19, 2012
Location: A wheat field in Kansas
Posts: 141
I run a #22 spring in my g20 with hot loads down to sub sonics and have no problems. The 20 came before the 21 and had a heavier slide, when glock built the 21 on the 20 frame they had to lighten the slide to get the weaker 45acp to function. I would stick with the heavier spring to keep the barrel locked up longer and look at your extractor instead.
Just my 2¢…
"A free people ought not only to be armed and disciplined but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government." --George Washington
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