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Have you compared the ballilstic performance of a subsonic 44 Magnum (or 44 Special or 45 ACP) to a 300 Whisper? I bought a Rem 788 in 44 magnum long ago but after experimenting with shooting it subsonic I decided not to try to suppress it or to continue load it subsoinic. I also own a Marlin 45 ACP camp carbine. It's inherently subsonic but essentially the performance of a 1911 pistol with a stock.
The problem was that twist rate of commercial 44 and 45 caliber rifles is not sufficient to stabilize heavy low drag bullets at subsoinc velocity (1000-1025 fps). The high drag of light short bullets shed energy rapidly. The 300 Whiper gives:
better downrange energy (since high BC bullet retain their energy better)
less vertical stringing ( velocity times of time of flight squared) (only a small advantage with the 300 Whisper)
less wind deflection (wind speed * (actual time of flight - vacuum time of flight))
better penetration, (important for hunting with low velocity low energy bullets).
I'm not saying you shouldn't suppress a 44 or 45 calber firearm . But in my opinion unless it has a fast twist barrel and can shoot heavy low drag bullets there's little benefit in doing so.
Last edited by LouBoyd; 09-04-2011 at 10:55 AM.
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