What do you think?

[Cossack]

Second shot? Whats that? If your rifle is shooting as well as you indicate, there will be no need for a second shot. Personally, I don't do running deer unless absolutely trophy so last 19 have been 'one-shoters.'
You can predict with certainty the 1st and most important shot. The rest are second (and third) best....at best. If this is in fact a hunting rifle, rather than an X shooter, you should be happy with what it does.
PS your second and third shots may take 'differential loading' (changing the powder amts. in those loads) to make them hit closer to #1. You sure it's worth the hassle?