The issue of excessive recoil with the heavier payloads of lead
is one of the reasons I prefer TSS over lead.
I can't even imagine shooting a 2 1/4 to 2 1/2 payload.
In a 12 ga. with TSS, instead of shooting, say a 2 oz load of lead,
can go down to 1 3/4 oz TSS, noticeably less recoil,
while still having the same or greater range as the heavier payload of lead.
But in the 20 ga, 1 1/2 oz of TSS seems to recoil even less,
even in view of the lighter gun.
Just saying, one of the advantages you can get with TSS
is LESS recoil while still having the same or greater effective range
of a much heavier lead payload.