Are these 25 HP cartridges both the same? Are they the same as the 25 Krag used in the rifle in the first part of this topic?

I dug into the two C.S. Landis classics "Twenty Two Caliber Varmint Rifles" and "Woodchucks and Woodchuck Rifles". The woodchuck rifle book has more than anyone probably needs to know about woodchucks. Michael's 100-yard groups are in keeping with the several groups shown in both books.

On page 444 of the Varmint Rifle book, Landis discusses Lightning powder. makes me wonder if some of the faster "Reloader" series, maybe Reloader 7, were not Lightning revisited. If you read p. 444, turn to page 441 and read about HiVel 3.