Yes, very worthwhile.
I have a Bushy with 16", 1/9 twist, 5.56 chamber.
This gun groups 55gr. ball ammo 1-1/2" to 2-1/2" at 100 yds.

Shot some load workups for it yesterday with 55gr. Sierra HPBT (bullet #1390) at 100 yards. Ramshot X-Terminator powder.

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Let's Go Brandon! FJB