Author Topic: 7" barrel for the Glock 40  (Read 422 times)

Overkill338

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7" barrel for the Glock 40
« on: October 29, 2017, 03:28:15 PM »
KKM is making a 7" tube for the G40. Would you be able to get 1400 fps out of a 200 grain?

The damn barrel looks like a golf club lol
The 10mm Auto. No matter how you justify it, the .40 S&W was created for women, and pansy federal agents :-D

Ridgerunner665

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Re: 7" barrel for the Glock 40
« Reply #1 on: October 29, 2017, 06:39:56 PM »
No.... Not with published data anyway.

I did get 1,365 fps using Hornady data and AA9 powder, but settled on a lighter load at 1,300 fps.... Easier on the gun, my wrists, and my ears.
« Last Edit: October 29, 2017, 06:44:03 PM by Ridgerunner665 »

Ridgerunner665

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Re: 7" barrel for the Glock 40
« Reply #2 on: October 29, 2017, 06:42:58 PM »


Overkill338

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Re: 7" barrel for the Glock 40
« Reply #3 on: October 29, 2017, 06:49:06 PM »
I am jealous!

By the way, I shared that info and your pic at Glock Forum, but I did credit them to you.
« Last Edit: October 29, 2017, 06:58:30 PM by Overkill338 »
The 10mm Auto. No matter how you justify it, the .40 S&W was created for women, and pansy federal agents :-D

Ridgerunner665

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Re: 7" barrel for the Glock 40
« Reply #4 on: October 30, 2017, 12:37:36 AM »
Which Glock Forum?

I'm a member of a couple and generally get in on 10mm discussions but haven't seen it anywhere.

Overkill338

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Re: 7" barrel for the Glock 40
« Reply #5 on: October 30, 2017, 05:40:12 AM »
Glockforum.com
The 10mm Auto. No matter how you justify it, the .40 S&W was created for women, and pansy federal agents :-D

Overkill338

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Re: 7" barrel for the Glock 40
« Reply #6 on: October 30, 2017, 06:47:30 AM »
Ridgerunner, I'm currently looking for an extended barrel for my Glock 29. KKM makes a 4.5" match barrel that fits the 29. Will your KKM barrel stabilize the Underwood 220gr Hardcast?
The 10mm Auto. No matter how you justify it, the .40 S&W was created for women, and pansy federal agents :-D

Ridgerunner665

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Re: 7" barrel for the Glock 40
« Reply #7 on: October 30, 2017, 07:52:42 AM »
Ridgerunner, I'm currently looking for an extended barrel for my Glock 29. KKM makes a 4.5" match barrel that fits the 29. Will your KKM barrel stabilize the Underwood 220gr Hardcast?
Haven't tried them... But I'm 110% certain it would.

The problem some have had with those type of bullets tumbling isn't caused by a lack of proper twist rate.

It is simply tolerance stacking... Factory Glock barrels are generally pretty loose, most factory cast loads use .401" bullets... That's not a good fit.

The KKM barrel is .400" on the money.

my_old_glock

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Re: 7" barrel for the Glock 40
« Reply #8 on: October 30, 2017, 09:52:17 AM »