I gather this is imps. Say they are not vul. If we beat it one we get +100 instead of +50. If they make it we get -530 instead of -140. I'm not doubling.
I am not so sure I double at mps either. Partner's 3
showed an unwillingness to sell to 2
and, especially at mps, he would often be unwilling to sell to 2
. He has an opening hand and maybe, maybe, a bit more. The 3
was not an invitation to 4
, he would have bid 3m if he could envision a game opposite an upper end 2
call from me. I can expect a hand where he did not want to sell to 2
and that's about all I can expect.
I am leading a spade. A and another, or small? Small, I think, but either could be right. Or wrong.
Maybe more thoughts later, I need to head out for a while.