Re22 is the wonder-powder in the .300 Winchester and .257 Roy, it seems. I've had a lot of luck getting rifles to shoot well right away with tried-and-true 22 loads. However, like JB and others, I have experienced POI shift with Re22 in various rifles and calibers. I normally develop loads in the spring and summer in SoCal ... usually pretty mild.

Come November, I can usually be found in Montana, and temperatures tend to be quite a bit more brisk than at my local range in July.

My more limited experience also indicates that H4831 and H4831 SS are the place to start for alternatives to Re22. Ramshot has worked well for me in one particular .300 Winchester as well.

rb


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