Neck Tension for hunting precision

[bazzturd]

Internet reloading university suggests for the best mandrelling results, the mandrel has to do some work expanding. IE if you neck down 0.001" or less smaller than the mandrel diameter, it might not be doing much with spring back in play.

For the mandrels i've bought, i spec'd 0.0025" under bullet diameter. No data to support that as being the right answer it just struck me as a decent amount of tension without being overkill.

I stopped using mandrels for years because i didn't want to deal with multiple passes through a single stage press. Didn't feel it was worth it. Only started bringing them out again recently now that i'm starting to load more on a progressive.

Yeah, I use a RL550. I deprime on an old rockchucker. I got a 0.003 for hunting ammo. And going to I get an AGS annealer. Annealing and mandrel are my main areas for improvement in my process to tighten up my es/sd.

 

[wind gypsy]

Yeah, I use a RL550. I deprime on an old rockchucker. I got a 0.003 for hunting ammo. And going to I get an AGS annealer. Annealing and mandrel are my main areas for improvement in my process to tighten up my es/sd.

Why do you deprime on a single stage if you’re doing other stuff on a progressive?