Originally Posted by 21Carrier
It seems the three main barrel manufacturers that people use around here are Lone Wolf, KKM, and Storm Lake. Supposedly, the Lone Wolf and Storm Lake have tighter, better supported chambers (that is from Mudrush, who owns Swamp Fox ammo). That being said, MANY people have KKMs around here, and seem very satisfied with them, and use them with some mean loads (that would be you, Kegs). Bar-Sto also makes a great barrel, but they are pretty expensive.
For ammo, turn to Swamp Fox, Buffalo Bore, or Double Tap (in that order, in my opinion). They make hot stuff. They all have stuff that's appropriate for both SD and hunting. If you don't reload, you need to. It will open a whole new world for your Glock 20.
Well, That's just my opinion based on my tests. KKM is an excellent barrel with support that is much improved over the stock Glock, but it reaches it limit earlier that LWD or Storm Lake.
My tests are nearly Identical to the results that are shown in the pics here.
But LWD and ST, using the same ammo batch didn't have this bulge.
I didn't test using a Stock Glock since I have established it's limits in the past to be well below KKM, LWD or ST.