I admit, I’ve had the thought to comment a bit more here and there, but if it were me, I’d be casting it 1:20 simply because that’s what’s in my main pot and the majority of my stash for my preference. I don’t know if changing the alloy will make it shoot much different, but I hope it does.
A comment I had thought to add earlier was that if you have only tried pure lead in the Brooks mold and found it finicky, I’d guess it would cast easier with a tin alloy. If you have good temperature control in the pot, bump the heat up of the melt and preheat the mold? Are you using a bottom pour pot. I think Brooks molds seem easy to get to cast well, but of course I don’t know yours.
