I really like this pistol but is hesitant to buy one as there are numerous posts about severe leading in the bore. Looking at the problem from a practical point it appears to be an oversize bore issue, i.e., the fire burning past the bullet as it travels down the bore. As we know excessive leading increases pressure and since it is a blowback pistol I suggest that this is a very serious issue. I called Sig yesterday and talked to a technician and suggested that overbore might be a problem....he dismissed me and said it was an ammunition issue.....if you use CCI and Aguila ammunition you will not have a problem.....however, if ya watch the youtubes where people send their pistols back and they are given a new barrel and recommended ammunition.....they in turned used their, Sig's, recommendation and in as little as 40 rounds the lead was showing up!
I dont have that problem with my Ruger MK IV target pistol....need your thoughts....