Glock 20: what aftermarket barrel do ya suggest?

T

tjhands

New member
Man, it's been a loooong time since I've posted here! Until recently I hadn't reloaded anything in about 6 years, but I recently came to own a Gen 4 Glock 20, and would like to get back into the reloading hobby for it.

Is there any sort of consensus as to what aftermarket barrel to buy? I don't need the coolest one, but if there's a best bang-for-the-buck barrel as far as accuracy and price goes, that'd be what I'm looking for. Thanks! :)

I still have an 8-pound jug of AA#7 that I'll be loading light to medium-strength 10mm rounds with. Heck, it just occurred to me that I might not even need an aftermarket barrel if I keep my loads on the lighter side, but I'll heed whatever advice you guys give me. How's that for trust? ;)
 
While there are several to choose from, I think the two most popular would be Lone Wolf and KKM. I have a Glock 40 MOS (also 10mm) and did quite a bit of research on the subject. It seemed almost everyone was satisfied with their KKM barrel. Most were also satisfied with their Lone Wolf barrel but some groused.

In the end, the price difference wasn't that much so I went with the KKM. I am very pleased with and probably would have been pleased with the Lone Wolf as well.

Your call between the two.
 
I have a G20sf (Gen 3) and I have a Lone Wolf for it. It seems to leave the brass less bulged and preserves the original barrel. If I buy a Glock, I buy a Lone Wolf barrel for it - it's just standard equipment for me.

I use AA7 a lot for my 10mm. But I actually use it for my full power rounds; not medium power. For my everyday range rounds, I use AA5. I guess it would be good to mention here that I shoot almost entirely 180 grain bullets through my 10mm guns. X-treme plated for the range shooters; and jacketed bullets for the more potent rounds with AA7.

A lot of people use AA9 for the hot-n-heavies, but I'm of the school of thought that it's a bit more powder than is needed. You'll get a little more fps out of AA9, but it's going to come at the expense of more thrust recoil and muzzle flash. Not for me. Maybe if a longer barrel is used. Anyway, I'm off subject here. Point is, I'm getting over 1200 f/s with AA7, and that suits me fine.
 
I was planning on getting a KKM for my Glock 20 when I came across a 6" Lone Wolf barrel, extended slide, spring, and night sights for a price I couldn't pass up. The KKM might be better, but I've got no complaints. I load 180gr bullets on AA#9.
 
Any barrel would be suitable, as long as it's in a 1911. :)
But seriously, hasn't Glock redesigned their barrels by now?
How does your stock one do with factory loads?
Does it actually suffer from bulged cases that can't be resized?
 
Re: the post above me (I forgot how to quote)

Well, all stock Glock chambers are still loose by design, to facilitate eating any and all bullet profiles, so I'm guessing that higher-pressured rounds like the 10mm will tend to weaken the brass at the base, where the case is supported the least. The expectation of that is why I want a more supported barrel. :)

But I don't know for sure that the stock barrel will bulge brass out to the point where it can't be resized. I'd imagine it wouldn't do that to fresh brass, but as brass gets reloaded a few times and repeatedly run through the stock barrel, I'd guess that it would become more of an issue.
 
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You won't need an aftermarket barrel for pressure if you stay below listed max, but a good land and groove barrel might be more accurate with some bullets. I had KKM 10mm to .40 s&w conversion barrels for both a G-20 and a G-29 and they were both more accurate with plated bullets than the stock 10mm polygonal bores.

The KKM quality and drop in fit was very impressive.
 
I never had any trouble resizing brass from my stock 10mm barrels when shooting factory ammo or handloads. The factory barrel really isn't that bad.
 
I bought a storm lake barrel for my Glock 21 very accurate, fit perfect and l got it on sale at midway usa
 
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