6 mm J4 jackets have finally arrived
- Thread starter phishroy
- Start date
They look long and very pretty.
Do you have to cut them down to the right length? I don't remember reading about setting the length of the cup.
6 mm J4's come in several lengths.
these are the 1.15 inches long. there is an option to trim them to make shorter lighter bullets but i have plans for these guys... looking to make some long slender rebated boat tail with an s-10 to s12 ogive, haven't decided on final weight yet but it will be somewhere in between 100 to 120 grains... first time tinkering around with longer jackets, im sure i will have lots of calculating and trial and errors and more errors until i find what works well in my gun.
if anyone here has tinkered around with these 6mm long jackets i would appreciate input.
