FX Best Donny FL for a 700mm barrel .25 or .30 cal?

Looking for the knowledge base here to opine on the most beneficial moderators for the longer barrels 700mm or more, does a more weightier or less so model help to stabilize barrel harmonics and accuracy?
I used the Ronin model on the U2 .30 with a 700 barrel. He was effective as an additional moderator because U2 already has integrated in the coat. In fact, the focus was slightly better, but I gave up because of the length of the set.
 
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Get a Silent Thunder Ordnance Falx or Pugio.

I have both, the Falx works best for higher power setups like my DRS Pro 25 700 at 85 ftlbs.



The Pugio works great on my DRS 22 700 at 70+ ftlbs.

 
Get a Silent Thunder Ordnance Falx or Pugio.

I have both, the Falx works best for higher power setups like my DRS Pro 25 700 at 85 ftlbs.



The Pugio works great on my DRS 22 700 at 70+ ftlbs.

STO Falx is actually quiet, unlike Donny’s.