Response from Ty @ Barnes:
7. Where do I seat the Triple Shock Bullet?
Answer. As with the X and XLC Bullet, we recommend seating the Triple Shock .050" off the lands {rifling} of your rifle. This length can be determined by using a "Stoney Point Gauge" or other methods. You do not have to seat the bullet at or on one of the annular rings.
They didn't have RL22 listed but here's what they have in the book:
powder startvelocity max velocity
XMR 4350 52.0 2901 56.0 3124
XMR 3100 54.0 2923 58.0 3139
RL 19* 54.5 2936 58.53152
H414* 51.0 2893 55.0 3120
H435051.02913 55.03142
H4831 56.0 2867 60.0 3072
IMR 4350 51.02870 55.0 3095
IMR 4831 54.0 2932 58.0 3149
Win 760 50.5 2898 54.5 3128