For a long time I’ve been looking forward to producing a blog/video series covering 10mm Auto and 40 S&W. What’s not to like about taking 9mm to the next power level? 40 S&W essentially does that. Want to go extreme? 10mm Auto packs a major punch, it’s the most powerful semi auto handgun cartridge that can be considered “somewhat mainstream”. It’s been a while since I’ve loaded 10mm Auto- probably a good 10 years. So I thought this would be a great time to go deep on 10mm Auto and 40 S&W here on Ultimate Reloader! For years I’ve wanted to get my hands on a Glock 20, the full-size 10mm Auto pistol that pretty much sets the standard by which all others are measured by (10mm chambered 1911 pistol fans may beg to differ :)). What’s great about the Glock 20 is that you can get a “drop in” 40 S&W conversion barrel which essentially turns your Glock 20 into two pistols – one that shoots 10mm Auto, another that shoots 40 S&W- and the conversion process takes only about 15-20 seconds.
I missed out on a great deal on a used Glock 20 with conversion barrel about a year ago, so when I spotted an un-fired Glock 20 at my local gun shop, I bought it on the spot. Some people buy multiple guns chambered for the same cartridge so that reloading “overhead” can be kept to a minimum. My approach was the opposite: I want to experience and show as much reloading content as possible for each firearm I own. Such is life when you blog about reloading (and/or when reloading is your passion as it is for me).
Glocks are a matter of personal taste. People either like them, or don’t like them. Shooters will go on and on about the grip angle, the trigger, etc. To me they feel good, shoot good, are *very* easy to work on and take down, and I also appreciate the proliferation of aftermarket accessories. To put it simply: I’m a Glock fan. I don’t have a “Glock Perfection” bumper sticker on my truck, but I l like Glocks a lot.
Glock 20 Specs, from the Glock 20 product page:
- Chambering: 10mm Auto
- LENGTH: 209 mm / 8.22 in.
- WIDTH: 32.50 mm / 1.27 in.
- LENGTH BETWEEN SIGHTS: 172 mm / 6.77 in.
- HEIGHT: 139 mm / 5.47 in.
- BARREL HEIGHT: 32 mm / 1.26 in.
- BARREL LENGTH: 117 mm / 4.60 in.
One of the aftermarket items I had my eye on was the very reasonably priced and high quality 40 S&W conversion barrels from Lone Wolf Distributors. Not only does this give your Glock 20 the ability to shoot 40 S&W ammunition, it also features a more “tight fitting” more fully supported chamber, and conventional rifling.
This barrel is CNC machined from 416R stainless steel forgings, and heat treated as well. The polished feed ramp helps a wide variety of ammunition feed reliably. Want to shoot hard cast lead bullets in your glock? The conventional rifling and high-quality machining make this no problem, in fact Lone Wolf states: “Ok to use lead, plated or jacketed bullets” on the official product page. Sounds good to me!
At just over $100 (I paid $114.) I feel this barrel is a great deal, and it definitely makes the Glock 20 more versatile. I also love the fact that while I may need to “de-bulge” range pickup brass, any rounds I shoot using this barrel will not suffer from “the Glock bulge” because of the more fully supported chamber in this barrel. That’s a plus for sure!
I’m looking forward to bringing you all some great stories about 10mm Auto and 40 S&W shooting and reloading. If you have specific things you’d like to see, or stories you’d like to share, please leave a comment!