9mm reloading

T-Star: I have been reloading for over 25 years and yes, I know the difference between a crimp and a cannelure (by the way, both bullets and cases may be cannelured). The problem with W-W 9mm Luger brass is a taper crimp won't hold the bullet securely, thus a cannelure on the case (at the base of the bullet) is required to prevent 'telescoping'. The results of the American Rifleman article years ago mirror my experiences, thus ALL Winchester 9mm Luger brass goes into the recycle bin.

Winchest brass is about all I use. I have yet to have a problem with any of it in 9MM. Some plated 9MM brass I have used is less than .355 in diameter which contributes to what you are experiencing. I size all my cast 9MM boolits .357 and don't they work fine with a taper crimp. I crimp with a Dillon crimping die. I don't belioeve your opinion of Wincherster brass is founded on fact. I would also question the authority of some writer in American Rifleman written "years ago" as being relevant all these years later. If I were you I would seek out a different sizing die to see if that isn't your problem.

Take Care

Bob
 
T-Star: I have been reloading for over 25 years and yes, I know the difference between a crimp and a cannelure (by the way, both bullets and cases may be cannelured). The problem with W-W 9mm Luger brass is a taper crimp won't hold the bullet securely, thus a cannelure on the case (at the base of the bullet) is required to prevent 'telescoping'. The results of the American Rifleman article years ago mirror my experiences, thus ALL Winchester 9mm Luger brass goes into the recycle bin.

I use Win brass only for my 9mm, and have no difficulty at all holding my bullets securely with the RCBS seating/taper crimp die. Currently using Campro 124gr plated bullets, soon switching to Berry's plated.
 
Sorry, but I will stick to my guns (sorry about the pun). As stated, IN MY EXPERIENCE (along with the author of the American Rifleman article previously mentioned) Winchester 9mm Luger brass (regardless of vintage) requires an extra effort (read: a case cannelure) to prevent bullet 'telescoping'. And I gauge my reloaded ammo through a Lyman gauge to make sure it fits in any standard pistol chamber. And I have used both a RCBS and Lee carbide resizing die. So please don't attempt to convince me otherwise of something I have already experienced. A word to the wise is sufficient.....
 
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