Well here we go again! I see the name of this blog as Long Range Hunting yet see all kinds of responses that belay the true intent of the title of the blog. Yes I will admit that to me 300 yards or less is all that I am comfortable taking a shot at big game at, an honestly much less. Much prefer between 50 and 200 yards but might stretch it to 300 yards if really warranted. I am one that loves to maximize ballistic performance as well as terminal performance on the rifles I use for hunting. Target shooting is entirely a different story. Here I see talk about wanting to shoot large animals out to 800 or 900 yards or more ,but want to have a short rifle 20 inch barrel and a suppressor to shoot as these ranges. OK Folks...I have been in this game for over 50 years and what is proposed here is not ballistic-ally feasible. You don't take a magnum cartridge designed for a 24 inch or longer barrel and shoot it in a 20 inch barrel to begin with is ludicrous. All that powder that exits the barrel burned in the atmosphere outside of the barrel causing a big eruption of muzzle flash is essentially wasted money. A suppressor on a hunting rifle is about as useless as tits on a boar hog. A supersonic bullet will hit the target before the sound of the shot will. Thus the comment in the military that you will never hear the shot that kills you rings true. The supersonic bullet will hit you and kill you before you will hear the sound of the shot from the rifle that it was fired from. Silencers on high power rifles are essentially useless. You may deaden the sound of the rifle going off in the distance but that will be negated by the supersonic bullet hitting the target, whatever that may be before the sound of the shot reaching them. By that time the animal you were shooting at is dead before the sound of the shot reaches them. Wake up people. If you want to chronograph ammo leaving the barrel of a test rifle, same ammo..from two different identical rifles one with a 20 inch barrel with or without your mystical suppressor as opposed to the design 24 inch barrel that the manufacturer's use as their proof rounds for each bullet design, and expect to get better performance than the factory does you are simply delusional. With this I will simply sit back and listen to your diatribe on the fact that I don't know what I'm talking about. Your challenge is to prove me wrong;.
One must be more specific in regards to bad information. Just jabber jawing without any testing or diagnostics does little to reinforce the response as being invalid.
Show some data that supports you comments and I will gladly listen. I don't know everything, but I do know a lot and do try to back up my comments with solid data.
I have the data, l handload my own ammo and shoot it past a LabRadar. Shooting the same ammo in a 26" barrel and dropping to a 20" or a 24" and dropping to an 18" results in a drop of 150 to 200 fps based on the particular bullet, cartridge and barrel combination. I will also preface this by saying that the long barrels are Proof Research and the short barrels are Carbon Six, based on testing my proof barrels seem faster as the same ammo that clocks 3300 in my brothers 26" Browning clocks 3280 in my 24" proof and 3080 in the 18" carbon six.
That being said this will reduce your effective range by about 150 yards assuming 200 fps less. This sounds like a lot but if you are shooting a cartridge capable of taking game in excess of 1000 yards then that still leaves you the ability to shoot 850+ yards. Then of course there is the little fact that you can use still use a suppressor on a 24" barrel and have the best of both worlds, no muzzle blast, less recoil, and all of the velocity.
But since you want hard numbers let's look at hard numbers in the .300 Win Mag. Hornady loads the factory Precision hunter ammo with the 178gr ELD-X at 2960 fps out of a 26" barrel, that load hits 1800 fps at 750 yards. Now let's look at my 181 Hammer loads, at 3260 fps they hit 1800 fps at 900 yards a full 150 yards further than Hornadys long range hunting factory ammo. If I cut 6" off the barrel my velocity drops to 3050 fps and my 1800 fps limit is reduced to 775 yards, so in other words
my 20" suppressed .300 Win Mag has a higher effective range than somebody with a 26" barrel shooting factory long range hunting ammo.
Additionally you say that suppressors are useless because the sound of the shot doesn't reach the target until after impact. What happens if you miss or you choose to take a second animal? In my experience deer react very differently to suppressed shots and move much more slowly compared to a regular rifle shot easily allowing time for a follow up or a second shot in many cases.
Also what about your own hearing or that of those around you? How many people have permanent hearing damage from a braked rifle because they didn't have enough time to get ear pro in before they took the shot? I know for my bear a few years ago there was 10 to 15 seconds between the first sighting and 4 rounds of 6.5 PRC being shot as it was running my way. Had I not been suppressed I would have had to choose between missing the bear or the hearing damage that 4 rapid rounds of 6.5 PRC would cause.
You seem stuck on the velocity loss of a short barrel and the sound reaching the animal, two of the least relevant things about suppressors, but completely ignore many of the benefits that myself and others have listed here. I personally recommend that you find someone who has one and give them a try, you might find that you like what you hear.