split all necks

[204cat]

i split all the necks of every single case at the range this weekend fired twenty shots and split twenty necks! i usually go twice as long before i take the blow torch to them. i know exactly what happened. the time before this weekend at the range i worked up a load higher to find out if it would be better. nope. the group opened up. so this time this weekend i went back to the low end load that i like. i did not realize that it would have to be done sooner with the blow torch after a stiffer load. a neck splitting good time. the group went back to being tighter this weekend but not as tight as i can do. just need to get to the range more.

on two of the cases about one eighth of an inch chunk was missing. completely gone. has anyone had that much missing ? this is the first time i have had that happen. that much missing. i had a good time. hope you all have a good time too.

[jo191145]

My quess would be your brass was already super hard and not obturating with the low powered load. And Yes this condition can sometimes result in some fairly decent accuracy as the non expanding neck acts as a bullet quide in the long and generous freebore of a factory rifle.

Add a higher powered load with enough ooomph to open those super hard necks and you''ll get splits in a generous chamber.
You may not agree but thats the only plausible explanation for splitting 20 out of 20. High power loads do not work the neck more than low power loads unless the necks aren't working to begin with. Other parts of the brass Yes but not the necks.

Keep having fun

[Rick in Oregon]

204cat: After that experience, I'd strongly recommend you study the process of annealing closely, how it's done, and why.

[204cat]

thank you rick and jo. a good review of procedures and technique is always good. i had read this page who knows how many dozen times. http://www.6mmbr.com/annealing.html . a check of my procedure annealing brass is correct. it is how often that it is done is where i made a mistake. because i changed the load. spent the morning rereading that page. there are many other articles in the reloading books and other web pages that i have read. they are just as good.