Want a sanity-check on an idea

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Beagle-zebub

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An idea popped into my pretty little head today, and I was wondering whether it's feasible.

It is as follows: a Contender carbine, chambered in .45 Colt, and threaded for a .45 acp suppressor. As I'm imagining it, it would fire really heavy .45 bullets (say, 360 grains) at barely subsonic velocities, thus getting more than 700 ft-lbs. of energy while not emitting a supersonic crack. If necessary, a pistol length barrel might be used to keep the velocities subsonic, as might an extra-long Sharps-style barrel.

Is there anything preventing the use of bullets created for the .45 Colt through a suppressor designed around the .45 acp? (Those heavy-duty SMG cans might have a better chance of handling this, and a really long barrel might let pressures down to a suitable level, whatever that is. Twist-rate might be a problem, too, and the Nielsen device would have to go.) Do suppressors require jacketed bullets? (This would make the maximum weight 300 grains, methinks.) Bullets for either round appear to be either .451 (jacketed) or .452 (cast).

As to the question of what nefarious ends this might be used for, in the very unlikely event of its realization, I'm picturing me blasting those fat 15-lb. woodchucks that abound in DE suburbs and adjacent PA; additionally, I'd think that some farmers would be more willing to allow 'chuck hunting on their property if the hunter isn't raising a ballistic clatter and thus the neighbors' hackles.

What say you, gunnies?
 
Well no, you can use lead is a suppressor. I've used lead the the suppressed Ruger I got to shoot. (I don't remember the make of the can, too long ago.)
Unless you are using wipes, the projo shouldn't come in contact with the baffles. If they do, you are going to be haveing a bad day.


I just don't know about the extra heavy bullet idea. Standard 45 Colt is already subsonic.

I don't know how tough your woodchucks are, but if you need 360 gr 45 colts to kill them, I want no part of them.
 
As has been stated, lead and suppressors = no problem. Most/all .22LR's shoot lead bullets and it's likely the most suppressed cartridge overall. If you really want a heavy bullet, a quicker twist might be in order like for example a .45-70 barrel. One advantage of your proposal is that you'll almost certainly use ALL your powder capacity without excessive pressure. Hodgdons Trail Boss powder would likely be a perfect choice for this application. Bear in mind that if you take the velocity too low, it'll result in stuck bullets which isn't fun/safe.
 
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