30 cal 240 grain Sierra Match Kings?

[my human host]

I'm considering trying these in my 300WM. Anyone using them? If so, what was your experience with them? Sierra claims a 9 twist is needed and I'm wondering how ironclad that requirement is.

 

[nuclear_shooter]

If you want a heavy bullet you could always go with a 230 gr Berger Match Hybrid Target. On their site, they recommend a 1:10" twist. Even features a better BC.