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Discussion Starter · #1 ·
Has anyone bought that conversion kit for their G21/20? How is it and is it worth the money? How is the 50 GI round compared to the 50 AE?
 

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I dont have any experience with the kit, but the 50AE would have the edge. The 50AE case is the same length or just a tad longer that the .44Mag case. The 50GI is the same or a couple thousandths longer then a .45ACP case. The 50AE has the 50GI out classed by a pretty stout margin.
Desert Eagle 50AE
325 gr Ball 1,305 ft/s 1,229 ft·lbf
325 gr JHP 1,400 ft/s 1,415 ft·lbf
300 gr JHP 1,550 ft/s 1,600 ft·lbf

50GI Out of a 5" gun.
185gr SCHP 1,200 ft/s 591 ft·lbf
230gr SCHP 1,000 ft/s 510 ft·lbf
275gr JHP 875 ft/s 468 ft·lbf
300gr TMJ 700 ft/s 326 ft·lbf
 

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Discussion Starter · #3 ·
Yeah, your right about that, 50 AE throws the same 300 grain round twice as fast. I don't think the glock frame would be able to handle that kind of energy.
 

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A .45ACP 230gr Speer Lawman will move 120 + FPS faster and have 25 + LBS of energy more than the 300gr round out of the 50GI. To me, it just seems that theres not the case capacity there to launch heftier weight bullets.

Of course, if you are gonna compare lighter weight bullets (185gr), then the 50GI would be the victor over the .45ACP +P by almost 200 LBS of energy. But, considering the 50GI as more of a wildcat cartridge versus the proven abilities of the .45ACP and the ease of finding ammo for it, I stay with the .45ACP. Also, theres the added price of paying for the conversion kit and mags to add to one of your GLOCKS.

Id even go back to a G20 10mm Auto, before a 50GI, because even though its not as popular as the .45ACP, it would still be easier to get ammo for over the 50GI.
 

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Discussion Starter · #5 ·
I wonder if the question is terminal damage. Obviously the 50 gi is bigger in diameter compared to the 45 acp, and its moving slower. But if I recall correctly lower velosity rounds can do more damage. Its like this, what would hurt more? A round that goes right through you, or a round that hits like a big rock at half the speed. I guess we'd never know until both these rounds were shot into gel side by side.
 
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