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Author Topic: short barrel shotgun velocity  (Read 1782 times)

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Offline jamjennic

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short barrel shotgun velocity
« on: April 10, 2011, 05:10:01 AM »
can anyone tell me how much velocity a 12 ga. losses as the length of the barrel is shortened. am thinking of making a 14" encore pistol. what powder-load mite work best at this length.
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Offline Couger

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Re: short barrel shotgun velocity
« Reply #1 on: April 16, 2011, 03:07:22 AM »
Don't do it.  The ATF would come after you!  You're describing making a "sawed off" pistol shotgun.  Very illegal.
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Offline jamjennic

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Re: short barrel shotgun velocity
« Reply #2 on: April 23, 2011, 12:33:56 PM »
sbs shotguns are legal as long as they are registered with the atf and the bca in your state
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Offline torpedoman

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Re: short barrel shotgun velocity
« Reply #3 on: April 23, 2011, 02:16:49 PM »
Quote from: jamjennic on April 23, 2011, 12:33:56 PM
sbs shotguns are legal as long as they are registered with the atf and the bca in your state
you'll be on first name basis with all the local cops by the time it is verified as legal.
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Offline Farrier Matt

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Re: short barrel shotgun velocity
« Reply #4 on: June 06, 2011, 02:58:46 PM »
Im still curious as to the difference in length, say 28 compared to just legal 18.5?
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Offline mcwoodduck

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Re: short barrel shotgun velocity
« Reply #5 on: June 06, 2011, 03:06:49 PM »
12 ga loads are measured as 28 inches
 subtract 5 FPS per inch to 20 inches and then 10 FPS for every inche under 20 inches
Also add 5 FPs to 36".
So.
a 1200 FPS load is going to come out of a 18.5" barrel at 1145 FPS. (8X5)+(10 X1.5) = 55 Fps.
Not significant enough to change a load from killing to bouncing off.
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Offline 45-70.gov

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Re: short barrel shotgun velocity
« Reply #6 on: June 06, 2011, 06:21:54 PM »
i was shooting  my  9 inch  o/u
a  deputy cam over and said  ''you make sure you don't get caught with that''

it has a tighter pattern  now than  when it was  18 inch  cylender.....with  buck shot.

we assume the loss in velocity  reduces the air dispersing the pellets  ...[.wild  guess]
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Offline Farrier Matt

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Re: short barrel shotgun velocity
« Reply #7 on: June 07, 2011, 02:10:03 AM »
9" O/U 12 ga???? I betcha thats a handful!
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Offline Savage

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Re: short barrel shotgun velocity
« Reply #8 on: June 09, 2011, 12:54:59 PM »
Quote from: 45-70.gov on June 06, 2011, 06:21:54 PM
i was shooting  my  9 inch  o/u
a  deputy cam over and said  ''you make sure you don't get caught with that''

it has a tighter pattern  now than  when it was  18 inch  cylender.....with  buck shot.

we assume the loss in velocity  reduces the air dispersing the pellets  ...[.wild  guess]

No forearm??????!!!  Or one really short one!!!
Savage
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Offline 45-70.gov

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Re: short barrel shotgun velocity
« Reply #9 on: June 09, 2011, 06:26:02 PM »
here  it  is with  a ruger 44 mag 7.5 barrel  for comparison

15 years and i still haven't found time to refinish  it

oh well  just another undone project
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when drugs are outlawed only out laws will have drugs
DO WHAT EVER IT TAKES TO STOP A DEMOCRAT
OBAMACARE....the biggest tax hike in the  history of mankind
free choice and equality  can't co-exist
AFTER THE LIBYAN COVER-UP... remind any  democrat voters ''they sat and  watched them die''...they  told help to ''stand down''

many statements made here are fiction and are for entertainment purposes only and are in no way to be construed as a description of actual events.
no one is encouraged to do anything dangerous or break any laws.

Offline dakotashooter2

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Re: short barrel shotgun velocity
« Reply #10 on: June 13, 2011, 09:29:29 AM »
I think you could do it legally with no hoops to jump through if you used a rifled (slug) shotgun barrel. You'd still want to verify with the ATF.............
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Offline mcwoodduck

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Re: short barrel shotgun velocity
« Reply #11 on: June 14, 2011, 01:46:53 PM »
Depending on the state you may beable to do it. 
As a pistol/ handgun very illegal as you are not allowed to have a handgun over .5 caliber.
the 50 S&W and other .50s that are being $50 tax stamp my be required.  When I was in College the 14" entry guns were the rage and in VA it was possible to own them with the tax stamp, in other states where class 3 is not allowed you can not do it.
Then there is the whole legal thing about you registering it as a long gun and you will not beable to turn that frame into anything other than a long gun.  You are legally allowed to make a long gun out of a pistol but not allowed to make a pistol out of a long gun.
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Offline 45-70.gov

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Re: short barrel shotgun velocity
« Reply #12 on: June 14, 2011, 03:01:27 PM »
$200  to cut a long gun  or to  TRANSFER ownership

$5 to transfer ''any other weapon''........example shotgun  pistol..
.WITH NO STOCK AND NEVER HAS.....originally manufactured as such

ANY RIFLED BARREL  over 50 caliber.....exceptions  for slug guns, 577tyronasous  etc
is considered a destructive device

this is all federal  laws

don't know of anything  that a $50 applies too....unless that is  YOUR state law

i have been considering registering a handi reciever....then tinker with  things
but  my  16 inch  45-70  is already  reak ''handi''  without all the paper work
plus  you have to report any time and  why you  want to cross statelines....[HASSLE]
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when drugs are outlawed only out laws will have drugs
DO WHAT EVER IT TAKES TO STOP A DEMOCRAT
OBAMACARE....the biggest tax hike in the  history of mankind
free choice and equality  can't co-exist
AFTER THE LIBYAN COVER-UP... remind any  democrat voters ''they sat and  watched them die''...they  told help to ''stand down''

many statements made here are fiction and are for entertainment purposes only and are in no way to be construed as a description of actual events.
no one is encouraged to do anything dangerous or break any laws.

Offline mcwoodduck

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Re: short barrel shotgun velocity
« Reply #13 on: June 14, 2011, 03:28:10 PM »
As I said when I was in college in VA it was the rage to get the 14" barrels on an 870 as an entry gun and while I did not get one I thought I was told it was a $50 stamp for the short barrel. 
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