my aging eyes love this seater. i have one for 6mmbr, 6x47 lapua and 22 br. my new build is a 6x45 and i was going to buy one of these seaters, now i don't have to buy an entire seater. you can buy a "seater die chamber and it's retaing ring for $29.20 directly from forster. remove the 6br die chamber and insert the 6x45 and seat bullets! i bought a .223 seater die chamber and ring and use it in place of the 22br seater die chamber. you can use just one die for 22cal and 6mm bullets if you also change the bullet seating stem... purchasable from forster. i believe there are six cartridges in 6mm that will use the same seater body, just change the seater die chamber. there may be 8 or 9 in 22 cal. don't know if larger calibers bodies' are longer, but i suspect the 6.5s, 7mm and 30 cal might work as the 22cal and 6mm.