How noisy is subsonic load without suppressor?

[cr500]

I will be getting a 300 Whisper built soon and am wondering about the noise level. Where I live, silencers are totaly outlawed, so it counts them out. I will be doing some culling in rural areas, where some houses are about a mile away or sometimes less.
I will be going for a barrel around the 22-24" length and shooting 250gn bulets, subsonic. How load is the muzzle report? How far away can people here it on a still day? Will it sound more like a shotgun thud than a rifle crack at a distance?

[Artful]

I will be getting a 300 Whisper built soon and am wondering about the noise level. Where I live, silencers are totaly outlawed, so it counts them out. I will be doing some culling in rural areas, where some houses are about a mile away or sometimes less.
I will be going for a barrel around the 22-24" length and shooting 250gn bulets, subsonic. How load is the muzzle report? How far away can people here it on a still day? Will it sound more like a shotgun thud than a rifle crack at a distance?

Well it will sound like a slightly louder version of subsonic 22LR - so more thud than Crack as the crack is bullet going supersonic. Going to be a little deeper sounding tone than 22's due to larger bore diameter and will still sound like gunfire to an observer - but shouldn't be objectionably loud.