I will continue to look for gel tests for the Ranger T 147gr out of a 3" barrel.
Who knows - maybe I end up paying someone like Brassfetcher or tnoutdoors9 to run a test of it.
I have a feeling though that if all else fails the HST will expand - maybe not to .65 caliber like it would out of a 5" barrel, but I think it will expand some.
I am going to start another thread about 147gr practice ammo...