Picked up new Mini 14 no box 197 - 042xx what year is it and what twist ???? is it 1/7 or 1/10 .I got it for 560 no box has a real nice dark wood stock and a dull matt blue . ran about 100 rds so for no problems
Here you go. Looks like your Mini was one of the last old style ones made right before the 580+ series was introduced.
Ruger has a chart on their website but it only shows when your Mini was made, no barrel twist info there.
Mods please make this a sticky at top pf page, so people don't keep asking it. Sunflower Ammo.com: Ruger Mini-14/30 Barrel Twist Rates
p.s. RJF already answered this for you in your "Picked up like new Mini 14 prefix 197 thread".