Cool. I'll play with the adjustments. Thank you

I got the GRX resizing die  but it seemed to put to much load on my Dillon 550b so I ordered a Reddng Boss single stage and viola! Worked like a charm. Pass thru sizing was easy and I'm not putting needless stress on my 550b. 

Thank you for the help. Today I bought the Redding GRX carbide pass thru resizing die and bottle from Unique Tek in Arizona. I have an extra die holder plate so I hope to use the 550 in a separate operation to resize the brass.
Thanks again.
Steve

Hi I'm a Nooby reloader using a Dillon 550b. I've just loaded and tested my first warm 10mm rounds using New Starline Brass. I'm shooting these rounds through a G-20 SF with a 20lb recoil spring and a Kimber Eclipse 10mm with a 20 lb recoil spring. All my testing went well- rounds started at .4215-.422 at the base and swelled to .433 in the Glock and .427 around the base in the Kimber using Longshot COAL 1.255. I didn't see any glock smiles or signs of over pressure in any of the spent cases. My question is at what point do you toss the brass? How many times can "new" brass be reloaded? Resizng .433 all the way back down to .422 in a resizing die seems quite a bit to me. Your help and remarks would be greatly appreciated.

I have the Kimber Eclipse 10mm and is one of my favorite pistols. It's a joy to shoot.