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Brand new GLOCK 20 review (with pics)

Discussion in 'The 10 Ring' started by pistolpete10mm, Mar 1, 2011.

  1. pistolpete10mm


    Feb 28, 2011
    Hi there, first post here, but read some good info on the 10mm in the past on this forum.

    I bought a brand new Glock 20 3rd gen a few weeks ago and have now burned enough ammo through it to share my thoughts. It is my second Glock, first one being a model 17 3rd gen I bought in 2002. Have been buying and selling quite a few guns since then but it was only until last year I really felt like I needed a 10mm in my stable, and the Glock 20 seemed like the ultimate 10mm: durable, reliable, weather resistant, high capacity and good accuracy. And as a nice bonus it is kind of inexpensive when compared to other pistols that offer the same kind of power.

    The one I bought is apparantly made in June of 2010. I was thinking of waiting until the 4th generation of the model 20 came out, but this could easily take another year or two, and I'm not that patient. Besides, the upgrades are not that big of a deal, maybe the reversable magazine catch since I'm a southpaw, but then again I am used to using my left index finger to change mags and this works great for me.

    I don't shoot factory ammo since the cheapest (and pretty much only) factory ammo (UMC) costs € 0,70/round where I live, this is close to one dollar for one round of 10mm. When I reload I can shoot 10mm for the price of the cheapest 9mm, so reloading is the way to go. I opt to shoot 180 grain bullets with a charge of Vihtavuori N105 magnum powder under it, making the 10mm a true magnum round instead of a slightly improved 40 S&W. I've shot 180 grain Frontier bullets and they do well considering they are cheap, but the Glock really starts to shine when shooting Berry's double struck plated bullets, they are very accurate and cost less than FMJ. The target in the picture is one I shot with those Berry bullets last week at 25 meters (27 yards) using both hands with a score of 95/100. My other scores are close but I haven't been able to duplicate that one. I only shot 100 rounds of Berry bullets so far, but I tend to say that when I do my part the Glock 20 will do +90/100 at a standard pistol target at 25 meters. The Frontier bullets which I have tested earlier gave me average results of 85/100, not really bad, but not great either.

    Regarding the Vihta N105 powder, I use 9,3 grains in combination with a plated 180 grain bullet and this will give the bullet 1220 fps from what I've read from someone else who chronographed this load (and this is also what the Vihta manual claims), this is close to 600 ft lbs. My old Vihta manual from 2002 says that I can go up to 10,5 grains of N105 for a velocity of 1338 fps (in a 5,5" barrel), but in my newer manual it says max charge is 9,9 grains for a velocity of 1280 fps. It seems like a habit of Vihtavuori to lower their charges over the last years. They also offer just one real 10mm loading, and that is the one here described, all their other data are basically slightly hotter .40S&W loads in a 10mm jacket.

    I reloaded my lot of 50 Starline cases (bought 2000 cases in total) 7 times by now and all cases remain in good shape. I know the chamber support of the Glock has been addressed a lot, especially for reloaders of hotter loads, and I don't know about those older Glocks, but my empty cases after being reloaded 7 times show no signs whatsoever of the typical unsupported chamber. I don't feel the need to hotrod my 10mm, the load described above is a true 10mm and will do fine for me. If I want to shoot some heavy bullets travelling 1500 fps I'll take my Ruger Super Redhawk.

    The only thing I changed in this G20 is the connector, because shooting in the winter at freezing temperatures outside, that 5,5 lbs trigger quickly starts to feel like a 10 lbs trigger. So I put a 3,5 lbs connector in, and this feels much better. For the rest I have no plans on doing any mods on this pistol. I did put a red dot on my G17 now because I was affraid I won't use it anymore now I got the G20. But with a reddot on my 9mm I got an excuse to use it more often, and it'll do well in the modified class of bowling pin shooting.

    It also seems that Glock equipes these more recent 3rd generation pistols with a slimmer front sight, which I really like because my biggest complaint about my G17 from 2002 is that the front sight is too wide for accurate shots at longer distances (+50yards). The finish on the barrel is also much nicer, a bit greyish, but overall much nicer. Interesting to see is how much bigger the slide walls of the G20 are in comparison with the G17, they are over 50% bigger. You hear a lot about how much bigger the grip of the G20 and 21 is, while the grip front to back and side to side is just about 8 to 10% larger than a normal Glock frame. I find the difference in the slide walls and slide mass much more noticable.

    This G20 has quickly become my new favourite. Sure, my STI's shoot a bit better (and look better doing it), my Super Redhawk packs more punch, my .22's shoot a lot cheaper, ... but there's just something about a 10mm that makes it stand out. I guess you'll have to own (and shoot) one to understand it.




  2. erogers

    erogers NRA Life Member

    Aug 22, 2006
    Land of Lincoln
    Thanks for the great review and pics! I've been considering the 10mm cartridge for some time now, and I'm planning on getting my own G20 very soon. Your review only helped to confirm I'm making the right choice. Thanks, and welcome to the forum!

  3. 10mmWendel


    Jul 13, 2010
    I guess you could say the G20 is a perfect... :perfect10:
  4. Berto

    Berto woo woo

    Sep 15, 2003
    A great pistol, and nice report!!
  5. Taterhead

    Taterhead Counting Beans

    Dec 13, 2008
    Boise, Idaho
    Thank you for the nice write-up. I share many of the same sentiments, including results with the Berry's bullets.

    Welcome to the g20!
  6. Black01Jeep


    May 17, 2008
    Carson, Viginia
    I own a G20SF and love it and the looks when I shoot it at the range.:wow:
    Nice write up and welcome to the 10 ring.:wavey:
  7. bac1023


    Sep 26, 2004
  8. crsuribe

    crsuribe 10mm Auto

    Jul 3, 2010
    Welcome to the 10 Ring! And thanks for sharing your experience!

    By the way, and this is just out of curiosity, how/where do you get all your reloading supplies in Belgium? Sounds like they're well-stocked.
  9. pistolpete10mm


    Feb 28, 2011
    Thanks for all the welcomes. Yesterday reading the Vihtavuori reloading section for the 10mm on this forum I found out that the velocities in the Vihta manual are quite a bit exaggerated and my load of 9,3 grains of N105 and a 180 grain plated bullet won't give me 1220 fps, but more something like 1100 fps maybe even less. So I made some rounds with 10 grains and 10,5 grains of N105 for testing this weekend. I don't have a chrono but according to the real world data from this forum 10,5 grain of N105 should give me around 1200 fps with a 180 grain bullet, which is not really hot, but it's at least no .40S&W hidden in a 10mm case. I put the 10,5 grains charge in new cases just to be sure. Should work well in a stock Glock 20 considering the 9,3 grain load didn't sound or feel like a magnum, more like a beefed up 9mm.

    crsuribe, there are quite a bit of gun shops here in Belgium, not in every town, but within a 1 houer drive you can find at least 5 to 10 gun shops. Some of them carry a big stock of reloading supplies. This shop (in Holland, just over the border) has a lot in stock and has everything listed on their website It may be interesting for you to see how the prices in Europe compare to the prices in the USA. Most guys here envy the American prices. Even a Belgian build Browning Hi-Power sells for less in the USA than in Belgium. My G20 for example was € 700 here, which is $ 970 :shocked: Of course, this is mostly a currency difference since a G20 costed also € 700 ten years ago, and back then the € and $ were pretty much the same, so in 2001 a G20 would have been $ 700, but now due to the € and $ currency changes it is $ 970.

    MRBULLRED ????????

    Jan 10, 2008
    Hey dude, I like y'all waffles.. :) just kidding.. Congrats on the 10mm...
  11. 10-acious

    10-acious A Perfect 10

    Jul 6, 2005
    :welcome: and congratulations on your new G20.
  12. nickE10mm

    nickE10mm F.S.F.O.S.

    Apr 13, 2004
    Wichita, KS
    Greetings to our new friend in Belgium! Welcome and nice review! I've since sold my G20 for other 10mm projects but plan on getting another within the next several months. I'm shooting my Razorback with my handloads / reloads and waiting patiently on my Fusion longslide to arrive..... but a G20SF is in my future. Great gun. Again, nice review!
  13. bmoore


    Jan 15, 2006
    Under a regime.
    Great gun, and cool review. It really bugs me that factory 10mm are typically only 50fps faster than 40's. I always look up the ballistics now just to see how weak they are. My reloads are 180grn FMJ Hornady with 10.5 of Bluedot. Actually my dad does the reloading and I shoot.
  14. nickE10mm

    nickE10mm F.S.F.O.S.

    Apr 13, 2004
    Wichita, KS
    NORMALLY i'd made a smart-arse comment here about how that "must be nice" but I love reloading (as a standalone hobby) so I will leave it alone. :cool:
  15. DWARREN123

    DWARREN123 Grumpy Old Guy Silver Member

    Jan 25, 2008
    Clarksville, Tn.
    Good review for a good pistol. Reloading is the way to go to make the 10mm and Glock shine.
  16. bmoore


    Jan 15, 2006
    Under a regime.
    Lol yeah when i was younger and lived at home we did it together. He loves reloading as well so it works out. I pick up the brass, buy powder and slugs.
  17. deeHKman

    deeHKman "It Is Written"

    Aug 13, 2010
    Outstanding review thanks for all your time and Welcome. My 20sf is one of my favorites to shoot. Very unique semi. 15 rds of 10mm, thanks
  18. DougK


    Feb 26, 2005
    Great write up... I went with a new G20 last week to augment the G29 for when I go hog hunting.
  19. pistolpete10mm


    Feb 28, 2011
    Thanks a lot everybody, glad to hear you guys found my review good to read. Writing a gun review is sort of a challenge on its own, writing one in another language is taking it a bit further :supergrin:

    Looking forward to test the slightly hotter loads this weekend. Nothing nuclear, but at least some honest 10mm loads instead of improved .40S&W.
  20. gatorboy


    Jul 26, 2001
    It's pretty nice
    Nice report, great English for an ESL guy! Be safe and enjoy your Glock.