Generally speaking, S&W says their revolvers are designed for use with ammunition loaded to SAAMI specs. Since you specifically ask about .45 Colt +P, and since SAAMI has no .45 Colt +P specs, I would say the official S&W answer to your question would be "no". But, you could always ask them...

I rarely see any real need for anything with more oomph than the pretty-much "standard" .45 Colt load of a 255-260 gr. bullet at around 900 fps or so, which is fine in a Model 25, but when I want to venture in to higher realms I haul out my Ruger Bisley Blackhawk.

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Pisgah