The chamber of my .243 Win is pretty loose and the throat is too long. When loading 70gr bullets out far enough to touch the lands, only .1" or so of the bullet is in the case.
In the interest of fixing both of those problems, I am thinking about forming brass for the rifle from 30-06 cases. I know that .308 would be easier, but then I wouldn't be able to make the cases a smidge longer and the neck thickness would likely not be enough to get a nice fit in the loose throat.
I know that I need to leave clearance between the case mouth and the end of the throat and that I need to make sure there is also some slack between the loaded neck and the throat, I just don't have those numbers in front of me.
The questions that I have regard the process to form the larger case to the smaller one. I am planning to use a regular Lee .243 full length die.
Do I trim the case most of the way first, then lube it up and press it in? Or is it the other way around?
Am I correct in assuming that I need to pick up a adjustable case trimmer like a Forster rather than using my old Lee trimmer? Alternatively, could a Lee 6mm Rem. trimmer stud have the point ground down a bit to make a slightly longer .243 stud?
In the interest of fixing both of those problems, I am thinking about forming brass for the rifle from 30-06 cases. I know that .308 would be easier, but then I wouldn't be able to make the cases a smidge longer and the neck thickness would likely not be enough to get a nice fit in the loose throat.
I know that I need to leave clearance between the case mouth and the end of the throat and that I need to make sure there is also some slack between the loaded neck and the throat, I just don't have those numbers in front of me.
The questions that I have regard the process to form the larger case to the smaller one. I am planning to use a regular Lee .243 full length die.
Do I trim the case most of the way first, then lube it up and press it in? Or is it the other way around?
Am I correct in assuming that I need to pick up a adjustable case trimmer like a Forster rather than using my old Lee trimmer? Alternatively, could a Lee 6mm Rem. trimmer stud have the point ground down a bit to make a slightly longer .243 stud?