I have a batch of Winchester cases that produce good accuracy for me. However, many are getting hard to chamber and extract. I see that there are magnum case body dies out there that can resize the case right above the belt. One is a collet die by Innovative Technologies and the other is a Redding body die. It appears that both do the job. Anybody have experience with both and can recommend one over the other?
Even the Redding body die will take care of those cases.
Do inspect the thickness above the belt to make sure they are not getting thin.
I also recommend the incremental shell holders to control the headspace dimension when you shoulder bump.
The collet dies work great but you will often find that after a number of cycles, depending on the chamber, you will definitely want to make sure to inspect and size the body.
I just did a quick Midway search and that one is on back order for a few weeks, but here are the quick search results.
I just run them through a full length sizing die once they get sticky.