I've 224Grendel/LBC's/Fhuqking PPC Improveds on both Krunchentickers and Boltguns. Have quite a few 243Grendel/LBC's/Fhuqking PPC Improveds on Krunchentickers. Best bullet is always gonna win,simply because it can go no other way...thus the Delta 88 affinity in particular. Hint.
Not that I don't have some .243" love. Hint.
Or drag a beloved itty-bitty 270 squirtin' 105's in tow daily. But coming full circle,it's not a heavily COAL compromised Krunchenticker. Hint.
Beings your brass certainly ain't headstamped 270,I'd not begin to fret a barrel stamping that wasn't either. Hint......................(grin)