I bought a box of 350g speer hot-cor projectiles to load into my 45-70 but if I load them to the canneluer they are way too long, 0.160 to be exact.
I used standard size brass but do have a heap or shorter Hornady brass.
How short can I trim 45-70 brass in order to fit these projectiles. The brass will need to be a bit shorter than the Hornady brass is already.