.308 Cal-166g Hammer Hunter is born

For the win mag Rl23 will be great.
I'm about to load up both the 166 and 180 Hunters for a friends 300WM to see what it likes best. 24" 1-10tw. Peterson Brass. I only have limited RL23 but a bunch of H4350, H4831sc and H1000. Assuming the H4350 would be OK with the 166s. Would the slower powders be worth a shot with the 180s?
 
I'm about to load up both the 166 and 180 Hunters for a friends 300WM to see what it likes best. 24" 1-10tw. Peterson Brass. I only have limited RL23 but a bunch of H4350, H4831sc and H1000. Assuming the H4350 would be OK with the 166s. Would the slower powders be worth a shot with the 180s?
H4831 should work well with both.
 
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