RE: My First Serious Great Plains Experiment
Given the choice, I would go with the .54 - no doubt about it. If Lyman ever started to make a .58 barrelfor the Great Plains I would order oneimmediately.
If you're looking at the GP, you can always go with a .54 with a slow twist barrel for shooting balls, then pick up one of their.50 fast twist "hunter" barrels for shooting conicals/sabots.