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

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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.

I am jealous!

By the way, I shared that info and your pic at Glock Forum, but I did credit them to you.

Which Glock Forum?

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

Glockforum.com

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?

Quote from: Overkill338 on October 30 2017 07:47:30 AM MDT
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.

Here is an oddball 7" compensated barrel on eBay. Looks like it is made in Austria.

https://www.ebay.com/itm/IGB-Brand-Barrel-Glock-20-10mm-Ported-7-Inch-Barrel/122778879321?hash=item1c96310559:g:q-4AAOSwTm9Z873R



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