Dillon RL 550 with Dillon Dies. What is this machine capable of? I'm getting some very different lengths. I load 9mm and .40 and both have the same problem. When I load 9mm I'm going for a COAL of 1.15 and am getting anything from 1.14 to 1.19 in .40 cal I'm gunning for 1.20 and getting anything from 1.17 to 1.22! How close should I be getting to my mark with this press. I was told this is okay by two people at Dillon. Am I being OCD with this? I was really excited about cranking ammo out on this bad boy but don't want to waste bullets loading ammo that isn't as accurate as it could be. Is there a certain person I need to talk to there? To rule out a few known possibilities Shell plate is tight, dies are all tight, seater is die is clean, I'm using the round nose stem for round nose, I set the dies with cases in the shell plate, I'm using all the same Winchester brass, I pull the handle the same( all the way down till it stops)every time, my sizing die is screwed down finger tight to the shell plate (I had tried it with the die just off the shell plate too with same results), I took out all the slop from the seating stem by putting a o ring under the clip to hold the stem up all the way, the press is mounted firmly on a sturdy bench thats mounted to the wall and screwed to the floor, I can't find any slop in the machine anywhere, ram head seems to be straight, I will not accept this as okay or even close to okay. I was told by two different people that I'm off 5 thousandths and thats really good. I told them the lengths over the phone as I measured and didn't catch the mis communication on the hundredths and thousandths. I called back and read the numbers again and he said that was great. I'm good at under 5 thousandths so I told him after the decimal point the first number was the tenth and the second number was the hundredths and the third was the thousandths he was talking about. I said it's 5 hundredths and it wasn't good at all. Wanna kill these ads? We can help!