Also, I was somewhat surprised when upon reading the owners manual of my new Taurus PTIII G2 is advised one to load both 12 round magazines to full capacity and leave them that way for 48 hours before using them.
Lurch, I was having trouble buying into marine's claim that a new, stiff mag spring could cause feeding problems ... until I read your post noting Taurus's owner's manual caveat, which can only be interpreted as validating marine's claim.
I've never had a feeding problem with any of my CZs, but loading new mags was a painful chore before I got an Uplula. But, after reading that all springs eventually take a set, I opted to load all my mags after cleaning my guns after a range session. When I hit the range the following month I forgot my Uplula, having neglected to return it to my range bag after using it to load 11 mags. I was cursing myself when it came time to reload my mags at the range without the Uplula, but was surprised how much easier it was because each mag spring had spent a month fully compressed.
The trick works on recoil springs, too. When I got my first CZ 83 I had a difficult time racking the slide, because my left shoulder was frozen. Racking either by slingshotting or with an overhand grip was just impossible because of the intense pain. I had to switch hands to rack the slide, and I learned how to do it like a weak girl, allowing me to keep the pistol in my gun hand, but after seeing what happened to my mag springs after storing them compressed for a month, I did the same to the recoil springs by storing them with actions locked open for a month. It helped, but the change was not as dramatic as it was for the mag springs, probably because of intensity of the pain involved.
You could also polish the feed ramp by hand - no dremel please unless you're very careful. You could just get some mother's mag polish from Walmart, put a glob on a rag, and rub the feed ramp until it's bright and shiny. I use a jeweler's rouge cloth (cheap, bought it online) and a pencil eraser since my finger gets sore. You can't overdo it if it's by hand. And to think some pay $60+ to have a smith do it. That right there is the basis for a lot of DIY action jobs.
dyl, good recommendation. May I assume there is no need to apply polish to the jeweler's rouge cloth, because it is already impregnated with the rouge? The rouge is meant to polish precious metals, which are soft. It must work on harder steel, or you wouldn't be using it, but would the mag polish be quicker?
It was mentioned earlier -- but if you're loading the mag with the slide closed, that may be causing the problem. A lot of gun designs have problems when loaded in that manner.
Open the slide, insert the full mag, and release the slide -- if it chambers properly that way, just continue to do it that way.
Walt, of course you lose one round of capacity doing that. I may have to give my mag base plate a solid whack to ensure it locks into place with a round in the chamber, but I've got rubber base plates on all but my CZ 82, so a solid whack is easy and worth that additional round.
