j0e_bl0ggs
Well-Known Member
Never had much of a problem with 243 brass needing to be trimmed after every firing.
Cannelure is not necessary for crimping bullets.
Cannelure is not necessary for crimping bullets.
With regard to ensuring consistent and correct case length, so far I have used Sako brass for my .243 reloading (factory bought expanding rounds which I have then re-used), and after 3 fires all of the cases are still significantly shorter than the Lee length guide. Could I still crimp these successfully?
To set the FCD you need a uniform case length to achieve a uniform crimp.
With regard to ensuring consistent and correct case length, so far I have used Sako brass for my .243 reloading (factory bought expanding rounds which I have then re-used), and after 3 fires all of the cases are still significantly shorter than the Lee length guide. Could I still crimp these successfully?
Just make sure that the length rod on the Lee trimmer is screwed fully into the cutter and check the length with your vernier calipers. Much as I like the Lee length trimmers they will only trim over length cases. In your situation you will need a trimmer that you can set to the length of your shortest case and trim them all to that. A variation of a few thou in the length of the cases will have a significant effect on the amount of crimp leading to varying velocity and uncertain accuracy, especially at longer ranges. This will show up as a wide ES through the chrony.
Thanks 1066,
The Lee length gauge was on back-order for weeks until I received it, so I was measuring each case with calipers to check they were not over-size. I will measure the cases and batch them to length and try a few crimped to see if it makes a difference.
glad to see your going to try it out!