S&W-Keeper
New member
Are you guys having any issues shooting .40 out of your model 20.I am trying to decide whether to get a .40 barrel.
But at the same time I see no reason to do it on a regular basis.
I'd get the lonewolf barrel conversion. Drops right in, you use the same mags. I shoot mine all the timeAre you guys having any issues shooting .40 out of your model 20.I am trying to decide whether to get a .40 barrel.
I don't see that it would make any difference who made the conversion kit, but that's moot.I'm not sure any manufacturer recommends or even suggests conversion kits, specifically, unless they are made by them (CZ or Tanfoglio for example)...
It is, and in a range use only gun, it's not a big deal if one breaks. I would say that the risk comes if this is done in a self-defense gun, and the additional stress results in the part breaking later, perhaps during a self-defense situation. Not saying that's likely because it's not--just saying that just because a part is easily replaced doesn't necessarily mean that breakage is acceptable.If it's just a risk to the extractor, maybe valid, okay. Extractors can be funny things. That's a replaceable piece.
The potential issue comes from the fact that there's a sharp transition at the front of the chamber.Will it kaboom? Probably not. It shouldn't rupture a case. Alternatively, I've never read it's a wear up to kaboom. Meaning, if 40 is going to rupture in a 10mm barrel, your odds of it happening are each first time, not cumulative build up to an issue. I don't think there is a logical reason why it would.
The only reason I wouldn't do it is because I've had a squib before in regular 10mm, fortunately the bullet stopped just in front of the chamber not allowing the next cartridge to go into battery. I could imagine a scenario where the shorter case of a 40 might not do that (possibly allowing the next cartridge to go into battery)--but that's conjecture on my part.I have had no issues shooting .40 in my 10mm Glock 20.
stagpanther: My first 20 featured Glock's stock barrel which I personally considered unsafe for use of true 10mm full-power cartridges due to scanty case head support.
S&W states that shooting .40S&W in the 610 revolver is acceptable--but not in their 10mm autopistols.I also have a S&W 610 in 10mm.