What kind of velocity are you getting? Is faster speed obtainable by using a 6" aftermarket barrel in a G20? Any of you using 7" barrels, and if so what kind of velocity are you getting with that?

My 29SF is still my favorite gun. I've polished the barrel, the pins, the slide stop lever. I swapped the serrated trigger out for a G20 smooth trigger. I FINALLY got the plastic sights off of there. I replaced them with a set of Meprolights. I really wanted TFO's, but would you guys have passed up new Meprolights for $50 ? I'm running a Lonewolf 3.5# trigger, and she is a joy to shoot. The only piece I have left to get is a 19lb spring. I carry it with Underwood's 200gr Noslers. I've been debating on switching to the Xtreme Defenders.

Anyway, I've been absent for awhile. How are all you guys?

I am replying here rather than continue the XDm thread hijack.

I have one aftermarket barrel for the G20, but it is a 9X25 in stock length, not a longer barrel.

My G20 tracks about 10-15 fps slower than my 1911's in 10mm, and is about the same as my Witness' guns.  About what you would expect from .5" less barrel.

I would expect a 6" barrel to buy you about 30-35 fps over the stock 4.6 length, and a 7" barrel about 50 fps over stock length.  Several guys here have longer barrels and they can chime in with real world experience.

Most of the time I shoot my G-20 SF using the factory 10mm barrel and velocities are close to the 5" velocities my of other guns.
I do have a Lone Wolf 5.5" 10mm barrel for it but haven't tested with it yet.
I will say the 6" 9x25 barrel has a good performance gain over the shorter barrels.

Quote from: The_Shadow on October 23 2018 04:38:28 PM MDT
Most of the time I shoot my G-20 SF using the factory 10mm barrel and velocities are close to the 5" velocities my of other guns.
I do have a Lone Wolf 5.5" 10mm barrel for it but haven't tested with it yet.
I will say the 6" 9x25 barrel has a good performance gain over the shorter barrels.

My only 9x25 barrel is a Lonewolf 3.8" . I should have went with a 4.6".

7 inch barrel, 1300+ fps with various 200 grain bullets using published load data.

Quote from: Ridgerunner665 on October 24 2018 10:23:06 PM MDT
7 inch barrel, 1300+ fps with various 200 grain bullets using published load data.

That is amazing! I bet a G40 looks bad ass with a 7" in.

Load = 180 grain Montana Gold JHP
New Starline brass
CCI Large Pistol Primer
9.3 grains of Longshot
COL 1.257

Gun #2 Glock model 20 SF stock except 20lb spring and tungsten guide rod .
5 Shot average velocity -1287 FPS

Gun #3 Glock model 40 with a 7" KKM barrel
5 shot average velocity 1510 FPS


All guns had low STD deviation all loads were accurate at 25 yards.

Outside Temprature was 6 deg F

No smiles and primers looked good.

Chronograph was 15 feet from end of the BBL

Quote from: Ramjet on October 25 2018 06:13:20 PM MDT
Load = 180 grain Montana Gold JHP
New Starline brass
CCI Large Pistol Primer
9.3 grains of Longshot
COL 1.257

Gun #2 Glock model 20 SF stock except 20lb spring and tungsten guide rod .
5 Shot average velocity -1287 FPS

Gun #3 Glock model 40 with a 7" KKM barrel
5 shot average velocity 1510 FPS

1510?! Geeez that is impressive!

Yea the velocity in the my carbine is only slightly higher. But I love the 7" BBL in the 40 and it not tough to carry in cheast rig for hunting.

Ridgerunner, who manufactures that 7 inch barrel?

KKM

Quote from: Ramjet on October 26 2018 08:54:45 AM MDT
KKM

Thanks..

Quote from: Ridgerunner665 on October 25 2018 04:50:21 PM MDT

That looks bad ass. Some people dont like the look of the G40, but I do. I'm trying to decide if my next pistola will be a Delta Elite, G40, or a G20SF with a 6" barrel. Any of you chrono a G20 with the Glock 6" hunting barrel?

1276 FPS average with 20 rounds chronoed 14 feet away.

200 gr WFN moly coated from Montana Bullet Works and casted from the mihec mold.

13.2 gr of AA#9

Stock Glock G40

New starline brass

S&B primer

1.250" seated length.