One thing about WIN head stamp range brass - ya gotta check for primer hole burrs - In my experience about 1 in 200 have a large brass burr at the primer hole that makes for a less than clean powder burn. This one had 2.
I use the Lyman primer hole de-burr hand tool when I come across these.
This particular attachment is of a 3 hr SS wet tumbled piece of .40 S&W WIN brass, but I have seen it in 9mm WIN head stamps too. ( this is for those who will insist that a good solid tumble will remove all burrs - nope )
One thing I like about the Lyman de-burr tool is it's adjustable for pistol case depth.
Full on Winchester pistol head stamps don't seem to have this flaw.
I used not to bother in my early days when I still dry tumbled with corn cob husk - but found that sometimes these burrs would result in a full flake of GSR trapped behind the burr. If that GSR flake or a trapped piece of corn cob media dislodged and covered the primer hole - however unlikely - this could result in a miss-fire or hang fire.
I use the Lyman primer hole de-burr hand tool when I come across these.
This particular attachment is of a 3 hr SS wet tumbled piece of .40 S&W WIN brass, but I have seen it in 9mm WIN head stamps too. ( this is for those who will insist that a good solid tumble will remove all burrs - nope )
One thing I like about the Lyman de-burr tool is it's adjustable for pistol case depth.
Full on Winchester pistol head stamps don't seem to have this flaw.
I used not to bother in my early days when I still dry tumbled with corn cob husk - but found that sometimes these burrs would result in a full flake of GSR trapped behind the burr. If that GSR flake or a trapped piece of corn cob media dislodged and covered the primer hole - however unlikely - this could result in a miss-fire or hang fire.
