Glock 20C Review [Archive] - Glock Talk


View Full Version : Glock 20C Review

01-30-2013, 08:21
Quick summary of the Pros/Cons for the Glock 20C:

-Reliable (not a single failure to date)
-Accurate (more accurate than 99% of the shooters that own one)
-Durable (10mm Glocks seem to do better than their competition [EAA/1911/ect...] in handling the 10mm wear)
-Easy to maintain
-TONS of aftermarket support
-15+1 capacity
-Glock's customer service is great
-Durable finish
-Cheap replacement parts, should you ever need them
-Low Bore Axis resulting in a relatively soft shooting gun
-Easily modified to fit the shooters' preferences
-Requires very little cleaning/lubrication to run reliably
-Muzzle flip and perceived recoil are minimized vs the standard G20 allowing for faster follow up shots

-The C model is much louder
-The ported barrel may make your front sight turn black (mine doesn't seem to but I've seen others that do it after 2 or 3 rounds)
-The ported barrel causes a decrease in muzzle velocity
-The grip is large and may be too large for some shooters to grip properly

Here's a video comparing with some shooting and a comparison to my Gen4 G20:

Glock 20C 10mm Review (HD) - YouTube

01-30-2013, 16:06
It is unfortunate that Glock does not make an SF model 20 with a ported barrel/slide.

01-30-2013, 19:45
How much velocity is lost on average from a 20C verses a 20?

01-30-2013, 19:54
Right on!

01-30-2013, 20:32
Very good review, as usual :cool:

01-30-2013, 21:30
Nice review. I've been enjoying the 20C for 12 years now. Combine it an aftermarket barrel of your choice and a large quantity of Star brass, and reloading is straight forward and downright fun with this pistol.

01-30-2013, 21:38
How much velocity is lost on average from a 20C verses a 20?

Hmmm.....I have a 20 C and an extra unported barrel, sounds like an interesting project when it gets warmer.

01-30-2013, 22:44
Nice, love my 20SF. Only thing I did was drop in a Wolf 22lb spring and guide rod combo. I probably have around 1600 through it with zero malfunctions, all reloads at real 10mm levels. Oh and I run a Lone Wolf stock length barrel in it about 75% of the time.

01-30-2013, 23:23
Nice review!:cool:

01-30-2013, 23:36
Very good review, as usual :cool:



01-31-2013, 09:13
How much velocity is lost on average from a 20C verses a 20?

It really depends on the round and spring weight. 50-150fps is a good general figure though depending on the variables.

02-18-2013, 15:53
How much velocity is lost on average from a 20C verses a 20?

Just got back from the range with results for both ported and non-ported Glock barrels for the 17 (C) and 20 (C). I have Glock non-ported barrels for both of my C models.

For the 10mm I used a light target load of 5.8 grs. of 231 with a Ranier 155gr. FP, loaded to 1.250", WLP primer.

Non-ported-Ave: 939 FPS ES:43 SD:13
Ported-Ave: 895 FPS ES: 65 SD: 20

The 10mm Heavy Load is 10.7 grs. Blue Dot with a 180 gr. Hornady XTP, Loaded to 1.260" WLP primer.

Non-ported-AVE: 1242 ES:38 SD: 13
Ported-AVE: 1213 ES: 73 SD: 20

For the 17 comparison I used Winchester white box, 115 gr. fmj's.

Non-ported-AVE:1152 ES:53 SD:18
Ported-AVE:1144 ES:61 SD:19

Today's temp, about 38 degrees.

In summary, the velocity differences between the 10mm non-ported and ported barrels were 44 FPS for my light load and 29 FPS for my heavy load.

For the 9mm, it was just 9 fps.

Hope this helps.