reloading .40S&W very lightly in a Glock ?

[tercel89]

Is it possible to reload .40S&W to where it's very lightly loaded and have it function in a Glock 22 ? The reason I ask is because I can take my Lonewolf conversion barrel that converts .40 to 9mm and put it in my Glock 22 (.40) and shoot 9mm. It functions just fine with ONLY putting the conversion barrel in. Even with the original recoil springs , extractors and all. So this makes me think that if I reload some .40S&W rounds to where they are lightly loaded like plinking rounds , that they would cycle the gun and run correctly.  I hear and read about how the .40S&W cartridge is very high pressure and that they don't have much "wiggle room" . Well why wouldn't they cycle and function correctly in a Glock 22 if the same Glock 22 runs light loaded 9mm's with only adding a conversion barrel ?  What are you guys thoughts ? I have only been reloading around 2 years or so , so I am still learning at this point.  What you guys think ?

[deerslayer]

Try it and see.  IIRC, the 17 and 22 have similar recoil spring weights, if not the same.  The 17 is oversprung from the factory.  A few competitive shooters load .40 to make "minor" power factor (velocity x bullet weight = 125,000 or better) in certain divisions.  If it doesn't function, try a 13 pound recoil spring.  Check the brianenos.com .40 forum to find some .40 minor load recipes.  

[tercel89]

10 hours ago, deerslayer said:

Try it and see.  IIRC, the 17 and 22 have similar recoil spring weights, if not the same.  The 17 is oversprung from the factory.  A few competitive shooters load .40 to make "minor" power factor (velocity x bullet weight = 125,000 or better) in certain divisions.  If it doesn't function, try a 13 pound recoil spring.  Check the brianenos.com .40 forum to find some .40 minor load recipes.  

Yeah , the G22 will shoot and function with the Lonewolf 40-9mm conversion barrel  . So if it will shoot my light loaded bunny fart 9mm rounds then I don't see why it wouldn't shoot and cycle light loaded .40 rounds. I guess to make things even more safer would be to buy some new never shot .40 brass.

[xsubsailor]

 I don't see a problem here. I, like you, use a 9mm conversion barrel in my G23 and have no problems. I believe that the small amount of wiggle room you mentioned in the .40 is referring to the high side.

[bulm540]

yup, all I used for uspsa production with my glock 22 then a glock 35 and now a tanfoglio stock 2 in 40 cal,  shooting minor. I did change the recoil spring to a 15# in the glocks and 8 # in the tanfoglio.

[bulm540]

Btw, I use once fired brass. 

[Patton]

I don’t remember the specifics, but I shot tons of bunny fart loads out of a Glock 23 Gen 4.  It was something like 775fps with a 180 gr bullet, and it never failed to cycle.

[jbrew44]

I load the 140 Bayou Bullet for my Glock 23. Very light recoil. I also do the barrel conversion with no problems. Mine is a gen 4.