TNTs are my all time favorite in .223 P.dog guns.
Cheap, accurate and nice "pop" on targets at that speed.
My 22-250s shoot a little better with heavier bullets, the 1-8 twist rifle seems to put too much gyroscopic on them as they occasionally don't get to the target.
The 6mmBR shoots them fine,not as accurate as SMK but more dramatic on target!
125 in 308 are big fun too.

"Camping places fix themselves in your mind as if you had spent long periods of your life in them.
You will remember a curve of your wagon track in the grass of the plain like the features of a friend."
Isak Dinesen