Barrel break in ????? Howa 223 Mini

[duncan61]

I wonder if barrel twist makes a differance

[bladeracer]

I wonder if barrel twist makes a differance

Caliber does for sure, .17's can be a pain to keep shooting well, .20 cal is a bit better.
I would expect a tighter twist rate would also foul quicker, but you can shoot significantly longer bullets.

[SendIt]

Scrub it good out of the box and start shooting.

I am in this camp also.