Late season grouse and partridge reloads

[greylynx]

What reloading items would you adjust to get better penetration on late season upland birds.

Those feathers are getting pretty thick these days.

Suggestions most welcome:

Powder: I believe that since the temperatures are lower, one requires a faster burning powder. 700X and the old 7625 are the current powders I use.

Wad: A softer type wad to handle lower temperatures would be a good Idea.
Even better, load with old felt and paper wads like the old Super X.

Shot: Everyone knows that high antimony lead is the best, but is near impossible to get in Alberta. Cat says plated shot is pretty good.

Buffer: Would buffer make a difference in cold weather?

Mica dust: Would mica dust make a difference in cold weather?

High Pressure loads: Try loading the highest pressure load you can. The load's pressure will theoretically go down when the temperature is colder.
Mind you, that is theoretically.

A super tight crimp: Gotta build the pressures up. Use only a once fired hull.

The above are just suggestions, and I am not sure how well they work.

Please feel free to post your opinion.

Disclaimer: this posting has nothing to do with truck hunting