Posted: 3/30/2017 11:35:13 PM EDT
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I have a 1911 series 80 light weight commander. I have tried several ammo brands and ammo weights and noted they all seem to have a different point of impact vs point of aim. However the federal 230 grain "ball" ammo is regulated to the point of aim, it seems. At 21 feet it creates one ragged hole on the target where other brands and weights do not. Am I correct in assuming the commander is regulated to 230 grain ammo? Not that I'm complaining the firearm is accurate and reliable but with so many brands, styles, and weight to choose from, it would be a loss to be unable to use an expanding bullet instead of ball ammo.
Thanks Madmac |
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Lighter weight bullets tend to shoot lower than heavier bullets. It's an artifact of the lighter bullet being faster and exiting sooner, before the angle of the bore has changed as much under recoil. The very slightly lower angle of departure results in a lower point off impact on the target.
If you're concerned about combat accuracy, it is a total non issue. Maybe more importantly, the difference between the impact of a 230 gr bullet in a .45 ACP or a 147 gr bullet in a 9mm and a 185 gr bullet in a .45 ACP or a 125 gr bullet in a 9mm is about the same angular difference as holding the top of the front sight on the spot you want to bleed and holding the center of the front sight on the spot you want to bleed. For example, I have a pair of Trijicon night sights on my concealed carry 1911, and the big orange dot on the front sight works very well for combat shooting as you just place the dot where you want to hit and that lighter weight bullet will impact on the spot you're covering. In other words, don't place the top of the front sight blade on the point you want to hit, place the center of the blade on the point you want to hit. It works better for fast self defense shooting practice anyway. 
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