Back bore to remove pits

[Bill Graham]

1906 VH, Vulcan steel barrels, 2 5/8"chambers, very good barrel exterior condition, and a number of deep looking pits in the bores.

Took measurements tonight with a Dave Manson bore wall thickness gauge (not extremely precise) and came up with the readings in the pictures. Does it look like I have enough meat to ream the bores some and still be within safe ranges, or is this barrel scrap? I cannot afford to sleeve the barrels, and it wouldn't be worth the expense anyway if I could.

Thanks.