I'm running a Broughton 1-7 cant rifling twist.
I'm shooting 107gr SMK
40.5gr. of H4831sc
Federal Match 210 primer
Lapua Brass Neck turned at .2685 due to tight neck.
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105 gr. Berger Hunting VLD
40.6 gr. H4831sc
Same Brass and same Primer as top load.
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Maybe somewhere around that range in powder you can start. I would start at a lower charge than mine. I have never tried 110 SMK on my 1-7 twist Broughton.