I have been using the rcbs die. Is it sizing the diameter of the shoulder way to much or it’s getting bumped back toward the body too much ???? How far up from the case head should I measure. I have never thought of measuring the diameter of a shoulder at the shoulder body junction. I haven’t really heard of anyone doing it either. Just pushing the shoulder back. I’m learning don’t cuss me too bad.
No I do not get a click I’m pretty sure. I don’t have the rifle with me.
Yes, Initial firing. Like most all new brass, new, unfired cases are just too short but that's out of our control as reloaders.. My factory 30-06 chamber is 7-8 thou on first firing and I still get over a dozen stout loadings out of Win brass. Your numbers are not at all bad and I think you have a good representation of what 99% of us deal with in normal everyday tolerances.
That’s why I posed it. For help. I can see it would cause a problem. How to fix ? As far as my shoulder push back goes if I back my die out any I will have a little pressure when closing my bolt. I can try it again later hopefully to test or does my die not fit the chamber worth a shit
I have been using the rcbs die. I knew just off of feel alone it was working my brass the least. I never heard of measuring the shoulder diameter only shoulder set back.
I do use the rcbs die. After the first 100 rounds 1 round per each piece of brass I used the hornady dies. The other firings I used the rcbs dies they felt like they was working the brass the least. I used the hornady and small base reddings just to compare measurements I do not use them for sizing in this rifle. What would you do since I have learned it’s squeezing the shoulder too much ? In your pictures it looks like your shoulder is getting squeezed .003 is that corrrect ?
I do not have a hard to open bolt or a click from bolt popping case out of chamber. I Never have on this rifle. I have had a snug bolt close before getting dies adjusted.
Ok. We’re getting somewhere, if I go that route who makes custom dies. Whidden I’m sure and who else
That's why we anneal... I make sure to cover the body/ shoulder junction along with the neck when I anneal. Your case neck is being worked back and forth way more than 3 thou, I can promise you that and it doesn't separate. Separation is due to thinning of the material, which is from the lateral force of stretching not from an open and close force. Measure a fired case mouth and then measure it after sizing without the expander ball in the die. You might be surprised how much brass can withstand.
Nothing was wrong with it. I paid for a barrel and it shoots fairly well. I’m going to attempt to use it. If I play around and let the case shoulder stay blowed out but back my die off to just touch the shoulder and maybe squeeze it down .002 I probably will have a snug bolt close is there any down sides to that route if I go that way ? I have always heard and read .001-.002 is where ya want to be
Look at the video link I posted on case head separation. Based on the video by an expert he states that the case shoulder gets pushed against the chamber shoulder by the primer, then the body expands tight against the chamber. The entire excess clearance is now between the bolt face and the case head. If you have excessive headspace the case 60,000 PSI wants to blow back towards the bolt. It has nowhere else to go. The location of the case that separates is not in the chamber. The entire case head in front of the .200” line is locked in place.
