Hey guys,
I finally got my .260 Rem in the other day and have started working on reloading for it. I'm still new to reloading but have been reloading for my .308 for about a year now.
I am using 7mm-08 Winchester brass to resize to .260. I resized the virgin 7mm-08 to .260 using a Forester Died per their basic instructions for setting up the die. I then loaded and shot the virgin brass through my rifle to fire form the brass to the chamber and get the headspaceing specs. I measured the once fired brass using my Hornady headspacing guage and began to attempt to set up the resizing die to where it would bump the shoulder back .001" or so. Well, I'm getting the opposite effect of what I would have expected and what I got when I did this same process with my .308 using .308 brass. What's happening is when I resize the brass the headspace measurement (length to shoulder) gets bigger not smaller. The measurement grows by about .002" each time I resize it.
The only thing I can come up with is that the extra brass from the 7mm-08 case is getting pushed back into the shoulder when I resize the once fired brass in the .260 die, and that is causing the shoulder to grow (bulge?). I don't know if that is right but it's all I can figure out.
I guess my question is, is this normal when using 7mm-08 brass for 260?
Am I missing something or doing something wrong?
If it still chambers, will it hurt anything? I don't want headspacing issues to cause rounds not to chamber or case separation issues.
Please do not assume that I know all the basics, if there is a simple answer please through it out there, I may be missing something very basic.
One other thing, I did try tightening the die up to where it would eventually bump the grown shoulder back to .001" less than the original size. To do this I had to really work the brass and it caused the case to buckle and indent right under the shoulder at the top of the case body.
Thanks for the help!
I finally got my .260 Rem in the other day and have started working on reloading for it. I'm still new to reloading but have been reloading for my .308 for about a year now.
I am using 7mm-08 Winchester brass to resize to .260. I resized the virgin 7mm-08 to .260 using a Forester Died per their basic instructions for setting up the die. I then loaded and shot the virgin brass through my rifle to fire form the brass to the chamber and get the headspaceing specs. I measured the once fired brass using my Hornady headspacing guage and began to attempt to set up the resizing die to where it would bump the shoulder back .001" or so. Well, I'm getting the opposite effect of what I would have expected and what I got when I did this same process with my .308 using .308 brass. What's happening is when I resize the brass the headspace measurement (length to shoulder) gets bigger not smaller. The measurement grows by about .002" each time I resize it.
The only thing I can come up with is that the extra brass from the 7mm-08 case is getting pushed back into the shoulder when I resize the once fired brass in the .260 die, and that is causing the shoulder to grow (bulge?). I don't know if that is right but it's all I can figure out.
I guess my question is, is this normal when using 7mm-08 brass for 260?
Am I missing something or doing something wrong?
If it still chambers, will it hurt anything? I don't want headspacing issues to cause rounds not to chamber or case separation issues.
Please do not assume that I know all the basics, if there is a simple answer please through it out there, I may be missing something very basic.
One other thing, I did try tightening the die up to where it would eventually bump the grown shoulder back to .001" less than the original size. To do this I had to really work the brass and it caused the case to buckle and indent right under the shoulder at the top of the case body.
Thanks for the help!
