I have a Colt .45 series 80, why don't you go talk to yourself, you can't possibly know what you're talking about. Let's see, 2,000 yards = 6,000feet from a slow knock down round, and a hand gun no less LOL.
If I had my .45 auto, and a box of cartridges, how many yards out would you feel safe standing while I emptied magazine after magazine in your general direction?
Strictly hypothetical you understand.
Caliber Weight/Type MuzzleVelocity (ft/s) Maximum Range (yd) Velocity at Impact (ft/s) .22 Long Rifle 40 gr RN 1255 2000 300 .223 Remington 55 gr SP BT 3240 3875 545 30-06* Springfield 180 gr 2700 5675 800 9mm Luger 124 gr RN 1120 2400 350 45 ACP 230 gr RN 850 1800 330 44 Magnum 240 gr FP 1760 2500 350 http://hypertextbook.com/facts/2002/DomnaAntoniadis.shtml
Try looking up exterior ballistics on that round 230 gr FMJ 850 FPS, and see what the retained velocity is at 100, 300, 500, and 1,000 yds.
Slow moving bullets can be very dangerous when they have enough MASS behind them.
And, yes, I do know what I am talking about. If you are interested in facts instead of bluster, you can start your education on the subject here:
http://www.exteriorballistics.com/ebexplained/5th/36.cfm