I believe the new production Tikka .223 Rem. chambered rifles have a 1:8 twist, and that
is stamped on the barrel. If there is no such stamp, then I guess it is a 1:12 twist.
I just purchased a Tikka T3, blued synthetic, and checked the twist, and I believe it
is a 1:12, which means it was produced before Feb of 2004, or at least that is the
date I read was when the change was made. Since I purchased mine for a friendly
neighbor varminter, with low report loads, like Blue Dot loads, using small
frangible bullets, I have no issues with the 1:12 twist. I have several AR-15s,
with 1:8 twist if I want to launch heavier bullets, but even there, I have been
loading 55 gr loads.
As for single feeding, on my M695(Whitetail Hunter), the top of the action is
open, and single shot feeding was no problem, as long as the empty mag was
in the gun. With the T3s, they closed the top of the action and there is only a
side ejection port, which makes single feeding a bit more of a challenge for
those with pork sausage sized fingers. It can be done, but it takes a bit more
attention, when you toss the fresh round into the action. Again, the empty
mag has to be in place, on the T3s.
Squeeze
PS. I have only fondled the Tikka Varminter, and I am more of a sporter weight
kind of guy, but it I ever wanted a fire spitting log, it would be the Tikka Varminter.