shibumiseeker
Grandmaster
Very odd that yours is a 1 in 12. Mine is a 1 in 9 with a 26" barrel. I wasn't aware that Remington made them in different twists.
EDIT: After doing a google search Remington did indeed do different twist rates on the Police model 223. Learn something every day I suppose.
I have one and I can do 69gr bullets depending on velocity and bullet type, but I stick with 55s in it.