An original low wall is only marginally strong enough for a 32 H&R… you would need a high wall for a 327 unless you go with a modern copy with steel you can know is strong enough. Since the new Japanese low walls were chambered in243, I would assume they’d be strong enough for the Fed Mag.
BTW, what makes you think a Ruger #3 carbine would be heavy? The one Dad had sure was light when I touched off a 45-70 in it.
My only experiences with Freedom Arms have been seeing them at NRA, reading about others’ experience , and buying 50 rounds of primed Fed Mag brass from them when nobody else could get them to me. Maybe when I win the VA State Lottery.
Froggie