What velocity for sub-sonic? - The Firearms Forum

jdon72 · 03-15-2010, 04:41 PM

What velocity is the limit for ammo to be considered sub-sonic? How fast before it is over the 'sub-sonic' factor?

J

Alpo · 03-15-2010, 05:24 PM

The speed of sound, at sea level, is 1125 feet per second. If it is slower than the speed of sound, it is "sub sonic". Faster than the speed of sound, it is "super sonic".

jdon72 · 03-15-2010, 07:22 PM

thanks Alpo.

Alpo · 03-15-2010, 08:38 PM

You're welcome.

big steve · 03-15-2010, 09:32 PM

Quote:

Originally Posted by Alpo

The speed of sound, at sea level, is 1125 feet per second. If it is slower than the speed of sound, it is "sub sonic". Faster than the speed of sound, it is "super sonic".

Exactly.

03-15-2010, 04:41 PM	#1
jdon72 V.I.P. Member Join Date: Feb 2009 Posts: 340	What velocity for sub-sonic? What velocity is the limit for ammo to be considered sub-sonic? How fast before it is over the 'sub-sonic' factor? J -->

03-15-2010, 05:24 PM	#2
Alpo Advanced Senior Member Join Date: Feb 2007 Location: NW Florida Posts: 8,658	Re: What velocity for sub-sonic? The speed of sound, at sea level, is 1125 feet per second. If it is slower than the speed of sound, it is "sub sonic". Faster than the speed of sound, it is "super sonic". __________________ Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297 I always take precautions. Beware the Evil Bullet Fairies.

03-15-2010, 07:22 PM	#3
jdon72 V.I.P. Member Join Date: Feb 2009 Posts: 340	Re: What velocity for sub-sonic? thanks Alpo.

03-15-2010, 08:38 PM	#4
Alpo Advanced Senior Member Join Date: Feb 2007 Location: NW Florida Posts: 8,658	Re: What velocity for sub-sonic? You're welcome. __________________ Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297 I always take precautions. Beware the Evil Bullet Fairies.