The only bad thing about the barrel is not the barrel - it's the ramrod. It's a telescopic rod that is pretty flimsy but totally workable for field reloading if used carefully (Don't extend it until you run out of rod while seating a projectile). So he needs a good range rod for bench work or practice (we all do). I would also recommend you get the barrel in stainless regardless of the current frame's metal.

I meant to add that Huntsman barrels are generally quite accurate and reliable. I started with one load in mine and stuck to it. Groups 3 at a hundred in about 1.75" day in - day out.

That would be a great choice for your Dad.