I haven't shot skeet or trap in a long time. But I usually did not use my 410's for trap. Skeet shooting has rules about shot size and shot weight. For actual skeet competitions, the 410 is restricted 1/2 ounce loads and all gauges are restricted to shot size between 7 1/2 and 9.
https://www.nssa-nsca.org/wp-content/uploads/2010/04/2010_NSSA_Rule_Book_2010-02-06.pdf
And since the Henry is only chambered for 2 /12" shells you are good to go on 1/2 ounce shot shells. Find shells in 7 1/2, 8, or 9 shot that shoots the best out of your Henry and enjoy yourself.
https://www.nssa-nsca.org/wp-content/uploads/2010/04/2010_NSSA_Rule_Book_2010-02-06.pdf
And since the Henry is only chambered for 2 /12" shells you are good to go on 1/2 ounce shot shells. Find shells in 7 1/2, 8, or 9 shot that shoots the best out of your Henry and enjoy yourself.