I really like the Corbons the best at this point.  I am looking forward for future comparisons.  Back to work too soon. 

As I mentioned in my introduction, I'm going to be shooting several different brands of 10mm ammo to see which one I shoot best with my Glock 20.

With that said, I was able to compare Corbon 155g DPX to the Buffalo Bore 155g TacXP today at the range.  In short, I shot tighter groups with the Corbons, and they were the first box of shells I've ran in the gun.  However, there was one failure to eject with the Corbon.  I chalked it up to beginner's user error, but there are other reports online so there may be something to it.  I have the targets and will post photos for comparison. 

Grouping patterns were similar, I shot both high and slightly to the left. 

All in all: 
1.  Corbon:  Questionable reliability; Most accurate for me
2.  Buffale Bore:  Gun ate bullets and wanted more, appeared to be of high quality manufacturing; Accurate

I am not in love with the trigger or the sights.  I will have a trigger upgrade to improve the trigger brake, and put on some adjustable sights.  Laser/light combo is also in the pipe works for nightstand duty. 

First impression of the Glock 20 is that I'm not as accurate with the 10 mm as I am with 357 sig and the 10 mm is not as snappy. 

Thank you.

Thing is the 10 and 357 are going pretty close in speed, although the 10 will have more force because of mass. 

I love the 357 sig.  It shoots so flat, so accurate, and hits with so much velocity.  I like the 9mm bullet because of the yaw, but I don't like the velocity.  I seriously looked for a Glock in that caliber but never could find one in person. 

I don't care what anyone says, increased force plays a part in stopping power.  Yeah a 22 will kill by knocking out a major vessel, but the shearing caused by larger calibers also plays a large part. 

Hello just thought I'd post a quick intro as I recently purchased a Glock 20.  This is primarily for protection of my home and family.  I broke down and bought a firearm.  Although I own >10 I keep at my dad's house.  I'm young 30s who grew up hunting but hasn't shot anything in years as I lost the heart for it.  I just finished the initial breakdown, studying parts, cleaning/oiling.  I have ordered boxes of Corbon 155g DPX, Doubletap 155g Barnes TAC-XP and 180gr Nosler JHP, and Buffalo Bore 155g TacXP.  I'm still trying to acquire Underwood and Winchester Silvertips.  I plan to shoot each individual box on separate targets to see what I shoot best.  I will post results once I have shot all the ammo.  Yes, it will be my first time shooting the 10mm and I'm aware maybe the ammo examined later may have an unfair advantage, I am not exactly new to handguns.  I have previously shot 357 magnum revolver and Glock 357 Sig (love), fairly accurately (<4 inch groups shooting rapidly approx 20 yards, better concentrating), although I'm no pro.

Well I'm thinking of upgrading to a barsto barrel and a stiffer spring, I don't know yet, will have to see what I'm shooting and do some more reading on the forum.  Will more than likely have the grip slimmed just to make it a bit more comfortable to me.

Thanks guys!