Enter 6100
12652 - 9212 - no crit even double howl
12652 - 9212 - w/ crit even double howl
12650 - 9212 - w/ crit even howl + tackle
12650 - 9212 - no crit even howl + tackle
12648 - 9212 - w/ crit even double tackle
12648 - 9212 - no crit even double tackle

Enter 6099
12647 - 9211 - no crit odd double tackle
12649 - 9212 - w/ crit odd tackle + sand
12649 - 9211 - no crit odd tackle + howl
12651 - 9212 - W/ crit odd howl + sand
12651 - 9211 - no crit odd double howl

Conclusion: Tackle moves RNG ahead (crits appear earlier) because of accuracy and dmg checks. Figure out Turn 3 Crit offset and what circumstance you hit it. Adjust earlier/later for scenarios that arent your trained offset