Thanks for the info guys.  I hope to get to the bench in a day or two and get some place worked up.  As I said New caliber to me, New gun, and a tough winter has my trigger finger twitching.  Gun is a sr1911 target.  Was bought mainly as a woods defense gun, lots of toothy critters  here in N W Montana and tired of packing around a bulky revolver.

New to the 10mm but not handloading (30+ yrs). When I bought my first 10mm last month Sig brass was what I could find in stock so I picked up 200 of them.  Anyone have opinions on it as far as quality/longevit/case capacity? It's the only 10mm brass I have, so nothing to compare it with