Re-necking tricks and tips?

[JGSFAB]

I have a large stock of 300 wby brass and now I need some WinMag brass. It sizes but the base of the shoulder gets little wrinkles where the blend line of the 2 radii meet. Some almost look like cracks. It's all been fired but I have some boxed once fired and they form super easy and no cracks.
The tough ones are super hard to form, in fact I switched over to the RCBS BMG press because it was too tough for my Hornady LNL.

Should I try annealing? Using sizing wax which helps.

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[JGSFAB]

Seeing some split necks so that prob a sign.
The mandrel pull out is super rough.

 

[oremike]

Why not just trade what you have for what you need? Other than that annealing will help but the head stamp will still be wrong.

 

[JGSFAB]

Why not just trade what you have for what you need? Other than that annealing will help but the head stamp will still be wrong.

I'd be up for that but a bunch is pretty old... gonna try some annealed ones.

 

[Certaindeaf]

I have a large stock of 300 wby brass and now I need some WinMag brass. It sizes but the base of the shoulder gets little wrinkles where the blend line of the 2 radii meet. Some almost look like cracks. It's all been fired but I have some boxed once fired and they form super easy and no cracks.
The tough ones are super hard to form, in fact I switched over to the RCBS BMG press because it was too tough for my Hornady LNL.

Should I try annealing? Using sizing wax which helps.

View attachment 1781775

Are you lubing inside the case mouths?

 

[Mikej]

My "morning eyes" saw..."Red-Necking Tips and Tricks". I still learned something though!

 

[JGSFAB]

Are you lubing inside the case mouths?

Yes but maybe not enough.

 

[JRuby]

Try leaving the decapping rod out of the sizing die in the initial resize, trim to length and the second pass through leave the decapping rod in the sizing die. I also use plenty of imperial sizing wax. By not leaving the decapping rod in the initial pass it reduces stress on the case. Works for me.

 

[kmk1012]

Are you lubing inside the case mouths?

@Certaindeaf i have to admit that I'm shocked. I don't believe I've ever seen a serious post from you, I hope you meant to do that and aren't starting to slip