I have a Springfield Armory 1911 9mm pistol which takes 9 round mags, this puts me at a slight disadvantage in IPSC, where everyone else is shooting 10 round mags. (Australia's firearms legislation limits mags to 10 rounds).
To get around this problem I purchased and use Chip McCormick 38super 10 round mags. These fit fine in my gun, but I did have some feed problems when I started using them. To solve this problem I have reloaded my rounds slightly longer (as per various articles on the web) and now they feed fine.
However, I am now having ejecting problems. Not sure if it is due to under-powered loads, too heavy recoil spring or bad technique on my part. The ejecting problems are reduced when I use 3.8 to 3.9 grains of AP70N powder (with a 125 lead projectile) but they still happen.
So today I purchased another recoil spring (Wolff 16.5lb) and will give that a go in the gun tomorrow. Unfortunately I do not know what the weight of the current recoil spring is (and I couldn't find the information when I did some searching earlier). I'm hoping this spring is lighter, or if not, I will get a friend to help me cut it down.
Will report after the range trip tomorrow. I'm not sure if I will shoot an IPSC match tomorrow or just monkey around with the gun. Hopefully my new mag well will also go on the gun tomorrow as I am interested to see how that will improve my mag changes.