Pray for another that you may be healed (James 5:16)

"Therefore, confess your sins to one another and pray for one another,
that you may be healed." - James 5:16

That you may be healed. I have a number of reformed friends who
frequently say things along the lines of "If I need prayer for healing
I go find a charismatic." But can't we confess our sins to one another
and pray with hope of healing no matter what we think?

Even most major non-charismatic types that I know accept an occasional
miraculous healing. But I read "May be healed." Not "Might be healed."
I think there is a certain amount of appropriate anticipation we lack.
Why cant we get together with our friends and when we pray expect that
God will show up, and if He doesn't in the way we expect or want, no
big deal.