No 780 was developed for the WSMs as it mimics 4831 and takes less space. Sure it would work in a 270 WCF but a 130 TTX backed by a max load of H4350 will kill anything I've met.

W780 works real good in my R-1 270 WSM, suprisingly best group to date has been with 130 Speer Grand Slams, never touted as a tack driver.

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