lone wolf conversion Glock 20sf barrels

[gutpile]

i am Considering a Glock 20SF. i had a 10 mm delta long ago....... my questions are this I am considering LWD barrels and in 9mm (cheap practice and competition) 40S&W and 357 sig barrels for play and carry. are the conversions dependable ?

thanks
Gutpile

 

[shibumiseeker]

The .40 barrel is pretty dependable, though if you are using light loads and keep the stock spring it may not cycle reliably. I have it for my G20 and 29. Can't speak to the others, and until a short time ago they didn't even offer the 9x19, I see they recommend an 11lb spring and +p ammo, and they only have ot in 6" bbl that I saw.

 

[throttletony]

Good question. the "general" consensus is that they are 95-99% reliable, so for carry, stick to OEM. (I'm sure you've seen this already if you've looked on the internet, reviews, etc.).
BUT.... I would generally feel quite comfortable carrying a 10mm that's shooting .40 or .357 Sig (based on case diameter which needs no conversion/off-centering/etc to fit/fire/eject, except of course the different chamber/neck specs). Of course, I would want to run through some ammo (say 500 FMJ, and maybe 100 SD) in my chosen conversion before I really felt comfortable with it. One more thing to consider is the slide wt and spring strength. If you leave the spring as stock, it may be very strong against .40 or .357 Sig, but if you lower it, it may slow cycling which can lead to a whole new set of *potential* problems.
I would NOT however consider carrying a 10mm or .40 converted to 9mm. Range practice - yes! Carry - no!

Also, in competition be aware that using aftermarket barrels and conversions may put you in a class that you don't want to be in (against much better guns), depending on the sport.

MAybe just buying a .40 would fit your needs better (still have the options of .357Sig and 9mm)? The 10mm is a very cool cartridge though, just pricey

 

[iunderpressure]

I would not carry with a replacement barrel. I also shoot several round of what I plan to carry through my carry gun to make sure there isn't a cycling problem.

10mm is great. Check out Double Tap ammunition. They are known for their 10mm. It's cheaper than their other loadings too.

 

[Jeremy1066]

I would not carry with a replacement barrel. I also shoot several round of what I plan to carry through my carry gun to make sure there isn't a cycling problem.

10mm is great. Check out Double Tap ammunition. They are known for their 10mm. It's cheaper than their other loadings too.

Double Tap is known for misrepresenting their velocities in 10mm ammunition!! I feel the best full power 10mm ammo maker (and believe it or not, one of the least expensive!) is Underwood. Amazing loadings, great price, and wonderful customer service.
Underwood Ammo - 10mm Auto

 

[Hohn]

I would not carry with a replacement barrel. I also shoot several round of what I plan to carry through my carry gun to make sure there isn't a cycling problem.

10mm is great. Check out Double Tap ammunition. They are known for their 10mm. It's cheaper than their other loadings too.

Nor would I, for .40sw conversion. I'd consider .357Sig as the feeding is reliable.

My LWD .40 conversion barrel runs pretty well if it's clean, but I've had far too many hang ups (FTC) to trust it for carry. The chamber is just too tight.


I've yet to find out how you can make a 9mm conversion work in a G20. mags are wrong, extractor is wrong, recoil spring is wrong. If anyone pulls it off, I'd love to see it.

btw-- any fan of Doubletap should be shooting Underwood

 

[22rssix]

i am Considering a Glock 20SF. i had a 10 mm delta long ago....... my questions are this I am considering LWD barrels and in 9mm (cheap practice and competition) 40S&W and 357 sig barrels for play and carry. are the conversions dependable ?

thanks
Gutpile

I think mine is. I have the LW 40SW barrel for my 20SF. I even added a 22lb recoil spring/guide rod(for hotter 10mm loads). With the stock spring/guide rod I haven't had any issues. Now I only use this at the range, if you are going to carry the 20sf stick with the 10mm.

The 40SW barrel and the 22lb recoil spring is a hoot to shoot. The gun cycles but you cannot limp wrist it all, with a good hold it cycles and shoots better than my 17.

 

[aaron580]

btw-- any fan of Doubletap should be shooting Underwood

THIS!!!!

Which mag would one even use for a 9mm conversion? The 357 sig and 40 are easy…but I don't think there is a mag to support a 9mm for large frame glocks??

 

[Hohn]

Which mag would one even use for a 9mm conversion? The 357 sig and 40 are easy…but I don't think there is a mag to support a 9mm for large frame glocks??

The unanswered/unanswerable question.

 

[wjmcvicker]

The unanswered/unanswerable question.

Originally Posted by aaron580


Which mag would one even use for a 9mm conversion? The 357 sig and 40 are easy…but I don't think there is a mag to support a 9mm for large frame glocks??
The unanswered/unanswerable question.

According to Justin Hansel at LWD you use the Glock 20 magazines and an 11# recoil spring with +p ammo. I have seen another post on a forum where a man said his had no trouble cycling regular 9mm loads.

 

[Hohn]

SO we're supposed to believe 9mm will feed reliably from a 10mm mag and with a 10mm extractor?

Seems specious.

 

[wjmcvicker]

SO we're supposed to believe 9mm will feed reliably from a 10mm mag and with a 10mm extractor?

Seems specious.

Maybe. All we can do is go on other's accounts until we buy it and try it! I plan on getting one. Naturally it would not be ideal to use anything but a stock barrel in a defensive gun, but having conversion barrels would give you options if you ever found the need.
The man who posted about his in the other forum claimed that the only problem he experienced with the mags was that the slide would lock open with one round left in the magazine every time. I could live with that. Hope these show up:
http://www.use.com/images/s_5/sorted/2013_11_28_319_a3db382d9e1fd282a5f6.jpg

http://www.northwestfirearms.com/attachments/g20-target-jpg.74252/

 

[shibumiseeker]

SO we're supposed to believe 9mm will feed reliably from a 10mm mag and with a 10mm extractor?

Seems specious.

Well, I dunno about feeding reliably since I don't have a 9mm bbl and no intentions of getting one, but it is somewhat timely as I was sorting through some range brass last night and came across a 9mm that had been shot in a .40. The mouth of the case was belled out and the primer was struck well off center (I was surprised it fired that off center). I can see the primer being struck on center with the conversion because it is held in place by the bbl. I can see the extractor not being a real issue as most Glocks will shoot ok without one. Apparently a .40 magazine will feed a 9mm: since I am curious I'm going to load one of my G20 mags with 9mm and hand cycle it to see.

As far as I am concerned, a 9mm conversion for a 10mm isn't a great idea, but apparently there's a demand.

 

[wjmcvicker]

Well, I dunno about feeding reliably since I don't have a 9mm bbl and no intentions of getting one, but it is somewhat timely as I was sorting through some range brass last night and came across a 9mm that had been shot in a .40. The mouth of the case was belled out and the primer was struck well off center (I was surprised it fired that off center). I can see the primer being struck on center with the conversion because it is held in place by the bbl. I can see the extractor not being a real issue as most Glocks will shoot ok without one. Apparently a .40 magazine will feed a 9mm: since I am curious I'm going to load one of my G20 mags with 9mm and hand cycle it to see.

As far as I am concerned, a 9mm conversion for a 10mm isn't a great idea, but apparently there's a demand.

Decided to to put my money where my mouth is since there is so little information about this conversion on the web. Mine should be here by the end of next week. I'll test it and post the results. Any one have any requests for the test?

 

[aaron580]

I stuck a few rounds of 9mm in a 20 mag. They did cycle and eject when hand cycled. The 9mm barely stays in the mag due to the case shape, can't see how this would be reliable in the slightest.

 

[Hohn]

I'm interested to hear of a shooting test.

probably want to do +P or +P+ if you can to help it cycle.

 

[wjmcvicker]

I'm interested to hear of a shooting test.

probably want to do +P or +P+ if you can to help it cycle.

I plan on trying regular power loads and working up as needed. I'm curious to see how it works. I'll let y'all know.

 

[Jbow]

Done some reaserch on these two. Was planning on converting my 23 with one. Seen a lot of good stuff online about them.

 

[Cameramonkey]

SO we're supposed to believe 9mm will feed reliably from a 10mm mag and with a 10mm extractor?

Seems specious.

Dunno about the 10mm, but Lone Wolf at least USED to advertise that to use a conversion barrel you needed to change to an appropriate mag. (maybe you missed the fine print, or didnt look at the product page on their website?)

In my case, my G23 with a 9mm barrel required me to get G19 mags to go with it. If you only checked places like Brownells, Midway, etc they may not list the mag requirement.

And I know its not a reliable sample size, but I ran a whole box of 9mm through my conversion barrel and not so much as a hint of a hiccup. I still probably wouldnt carry with it installed.

 

[wjmcvicker]

Dunno about the 10mm, but Lone Wolf at least USED to advertise that to use a conversion barrel you needed to change to an appropriate mag. (maybe you missed the fine print, or didnt look at the product page on their website?)

In my case, my G23 with a 9mm barrel required me to get G19 mags to go with it. If you only checked places like Brownells, Midway, etc they may not list the mag requirement.

And I know its not a reliable sample size, but I ran a whole box of 9mm through my conversion barrel and not so much as a hint of a hiccup. I still probably wouldnt carry with it installed.

Package came in today!! Haven't fired yet, but after borrowing some 9mm from my neighbor, steel jacketed no less, I can report that 18 rounds fit in the Glock 20 OEM 15 round mags, and that with only the force of me hand cycling them, they did eject w/o any issue. I too experienced the slide locking open with still one round in the mag as I mentioned another did too. Can't wait to get to the range!