The Mag Makes the Gun

I was on the line at Gunsite with perennial shooting buddies Novak, Blumenthal and Johnston. It was an advanced class and my partners don't tend to be understanding or forgiving of screw-ups or failures that distract the class or interrupt the training. The instructors are of the same frame of mind.


So when I began to have problems with my gun, I just shut up and worked through it. I was having frequent failures-to-fire on what should have been the second round, so I developed considerable speed with my “Tap & Rack.” This drill is supposed to re-seat the magazine in the pistol and then remove the problem round from the chamber, replacing it with a fresh round. After a few cycles of this problem, I realized that I had no round in the chamber to be removed. My problem was in the magazine itself. I was using a good brand of a then-new eight-round magazine. When the standard 1911 magazine holds seven rounds, an eight-rounder is a major breakthrough.


This happened almost 20 years ago and at the time I had relatively little hands-on experience with the new magazines. In retrospect, I am not sure that I would care to use them with a “bet-your-butt” carryin' pistol because of my earlier problems. The magazine for the 1911 was engineered by the master, John Browning. These magazines were intended to hold seven rounds of .45 ACP ammo in such a way that they will feed reliably all through the cycle.


It is possible to re-configure the magazine spring to permit it to accordion into itself at the bottom end of the coil, thereby allowing a little more space for one more round, which produces an eight-round magazine. But the column of cartridges is actually under a little more pressure than the gun was built to handle, which over-stresses the ability of the magazine catch to keep the magazine locked into the gun. As a result, my fully-loaded eight-round magazines were dropping out of position just a little when I fired the first round. If they are just a fraction of an inch lower than they should be, the moving slide can't engage the topmost round and run it into the chamber, and you get the dreaded “click” and not the welcomed “bang.”


I began to check each magazine by pulling down on the floorplate after seating it. In a surprising number of cases, the magazine came out and had to be re-seated. If the magazine isn't fully seated, and drops a little, the gun will fire the round in the chamber, but can't feed the next one. I tried various solutions, but the most reliable is to simply use one of the old-fashioned seven-round magazines.


Understand that I am not condemning the modern eight-round magazine, which is useful for many kinds of shooting. I am merely saying that I have had enough problems with them that I choose to use the original seven-round magazine, at least in defensive handguns.


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5 Responses to The Mag Makes the Gun

Jerry Bassett wrote:
October 27, 2010

Just to chime in, I have 2@7 rnd & 1@8 rnd mags for my Kimber and have never had a problem with any of them. As for magazine springs, the 3 13 rnd mags for my Browning HiPower have never been empty except during reloading and that’s since their purchase in 1966. They still feed just as good as new.

Steve wrote:
October 26, 2010

I use Chip McCormack's 10 round power mags. Very reliable and makes 1911 10+1.

CEVJR wrote:
October 25, 2010

Opinion among shootists seems divided as to life cycle of magazines under load. Many think that mags should be emptied periodically. Empirical evidence indicates that magazines left loaded for years have no evidence of spring failure. So you pays your money and takes your chance. I think I would periodically rotate magazines.

David Barham wrote:
October 23, 2010

AMEN! I have had several similar experiences with the same problem. Finally, I came to the same conclusion and also agree that it's a lot smarter to stay with seven rounds for personal defense.

C.M. Glenn wrote:
October 22, 2010

Thank you my 'Dungeon Master' for the reminder and remedy. I am not an auto loader fan and still rely on my revolver for reliability. Now if you would make a recommendation for replacement intervals of the magazine spring and how long the magazine can remain loaded without damage to the spring. I have not experienced problems.. yet.. and do not wish to have one if I am ever in an armed defensive encounter. Thanks for your info. .. Be safe and Stay well