I have loaded quite a few shells on a 900 and in the better version of the machine I haven't had any problems....but I do know how to keep them running. The one thing I don't really like about the P-W machines is that to keep them running smooth you have to tighten all the set screws every 3 or 4M shells. Otherwise things get out of kilter. I happen to have 3 Dillon SL 900 loaders at the present time(12, 20,28 ga). They, like all the rest of the progressive loaders, have their idiosyncrasies. All in all though they have less things that mess up than the Mec machines by far. Once adjusted correctly they will load as trouble free as my Spolar. But the Dillon has a case feeder which makes it so easy to use. The Dillon machines load good shells but the final crimp leaves a little to be desired for me(but I am a little bit of a nit picker on that maybe). The best of the progressives seems to be my Spolar so far. Loads the nicest shells with the least amount of fouled up shells...but they are PRICEY.. The worst of the bunch is unfortunately the Mec 9000 and grabber machines. They just get fouled up too easily...stamped out parts etc but the price is usually right and with a bit of work they will fulfill the expectations of the average hi volume loader(mostly spelled trap shooter). To some people reloading is like some kind of therapy... Even to me at times(very seldom)even after a million or so shells(no Joke). But I am at the point where I want the machine to operate right and have the least amount of problems... I have about 50 lbs or so of P-W parts here...and I already sold at leat that much...even have die sets etc...Just too much stuff. I even have a (gag)Mec 650 Hydramec sitting in my shop. Works fine but I just have too much stuff here. I also have 14 Mec single stage presses in the storage area. Had a bunch more but I gave 7 or 8 to the Service guys at the local military base so they can afford to shoot. Being a soldier doesn't leave too much money in the budget for shooting
Oh well most of the stuff will be on ebay soon. Cleaning the mess up
I guess