Ive used 2207 and 2208 and settled on 2208 as it's my main powder. Didn't do so well with 130 gr pills (some unburnt bits) but with the 180s mint. Use 43 gr for 150 and 40 for 180
If they recommend it then it'll work. Never noticed any difference in accuracy between them but with a 303 accuracy can be somewhat subjective depending on it's previous life.
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