More like planned obsolesce. Get us to spend more $$.
Not at all, different twist rate is for different length slugs. The 1:16 would be too much for light to medium weight slugs so right barrel for the right projectile.
Have your looked at PB barrels? 6.5 or 7 or 7.5 or 8 or…….then don’t get started with left gain barrels!
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