Rowland .460 conversion for Glock 21

This is a short video showing my son shooting my Glock 21 which has been converted to .460 Rowland. In the past couple of days, we've put 250 rounds through this gun with 0 malfunctions. We'll put 300 or more through before we start to feel secure with this gun. The setup is as follows...
Glock 21
Compensator from 460Rowland.com
Rowlanator from 460Rowland.com
.460 Rowland barrel from 460Rowland.com
+166% Mag springs from 460Rowland.com
10 Rounds, single-stack magazine from ebay (made by Glock)
22 Pound recoil spring from ebay (made by ISMI)
When using the double--stack magazine that comes with the Glock 21, I was having feeding problems that were somewhat eased by doubling-up magazine springs. However, once the single-stack was used, the feeding problems disappeared. Here's what I've shot so far...
200 rounds of Georgia Arms - .460 Rowland 230gr Speer Bonded Unicore Hollow Point
50 rounds of .45 ACP +p from Buffalo Bore - 230 grain jhp
I have 200 fmj handloads on the way, and 160 rounds of Underwood.
If I get through the next 360 rounds cleanly, I'll feel like I can trust the gun.

[@ericdee6802]

Great job bud!🇺🇸✌️

[@460Rowland]

sweet!

[@HardwoodFloorRefinishing]

What all do you have to Change so you won’t have failure to feed issues? The Glock barrel and spring right? Is that all?

[@bvanpelt8]

I'm sorry, I never saw this question. I'll answer now. I never succeeded in getting it to the point of being utterly reliable. Best I could do was like 99 out of 100, but always at least 1 failure to feed. You need 1. Compensator (I used the one from .460 Rowland, but you can get them elsewhere) 2. Barrel from .460 Rowland (but you can get them elsewhere) 2. Extra strong recoril springs (experiment with them) 3. Extra strong magazine springs (again, experiment) Besides all of that, I found that the most reliable magazines were Glock's own "single stacked" 10 rounders - the bullets are staggered just slightly. Besides all of that, there is a weight that .460 Rowland sells that is fitted to the rear of the Glock slide. I'm not sure utter reliability is possible since the basic gun is asked to do something it was never designed to do. However, the .460 Rowland is still my absolute most favorite round to shoot - it's a perfect mixture of raw power but with a lovely, semi-forceful recoil (as you can see when my son shoots it).

[@GregoryAlcorn-o3g]

Now make sure you replace the spring in your magazine as well

[@fjb4932]

That hair keeps getting in her eyes. Get a hair tie. ☆