Yeah, Ackley used Winchester High Walls and bolt action rifles like the US 1917 and British Pattern 14 Enfields (which were nearly free in those days) for his experiments. Both are among the strongest actions ever built.
I don't recall any mention of the Savage single shot in his writing, although that doesn't mean he wasn't familiar with it--he had a very extensive correspondence with American shooters (Even me!).
The 219 action is stronger than some people think, but not strong enough for these kinds of experiments, IMO. The 30-30AI was one of the few "Improved" cartridges that Frank de Haas recommended for 219s, and it is one of the mildest of Ackley's creations. The other ones were the K-Hornet and Mashburn Bee, both much smaller and less powerful than a .225 or .22-30-30AI. The .35-30AI works fine, tho--I had one once on a 220A.