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Author
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Topic: Shotgun barrel length vs velocity question.
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MULE
Knows what it's all about
Member # 63
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posted August 16, 2008 06:28 PM
Well, Its Saturday
I like asking stupid questions and drinking beer on Saturday. ![[Big Grin]](biggrin.gif)
With rifles, you lose some velocity when you decrease barrel length. Alot of variables but I hear things like 50-100 fps per inch
Is the same true with shotguns shooting T or #4 buck.
If a shotgun load is advertised at 1300 fps with a 24 inch barrel what would it be with a 18,5 inch barrel?
Swags and other guesses welcome
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Kickin' it on the Steppes. Livin' in my Yurt
My Hockey Mom can beat up your Community Organizer
Posts: 334 | From: Ulan Bator | Registered: Jan 2003
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Rich
2,000th post PAKMAN
Member # 112
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posted August 16, 2008 07:24 PM
Mule,
There have been tests which show that shotguns burn all available powder in the first 20" of barrel. This is because of type of powder used in loading shot shells. That being the case, a shotgun with a 20" barrel should yield at least as much velocity as same load in a longer barrel. I remember one test where a man took one of those 40" barreled Marlin pumps and chronographed it. He then began cutting off a few inches of the barrel, and again chronographing the bugger. He found that the gun actually gained velocities when he got to a certain length. It seems that shotguns with longer barrels have advantage of longer sighting plain, and make it easier to line up properly on flying game birds.
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If you call the coyotes in close, you won't NEED a high dollar range finder.
Posts: 2854 | From: Iowa | Registered: Feb 2003
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MULE
Knows what it's all about
Member # 63
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posted August 16, 2008 08:03 PM
Thanks Rich,
So basiccaly a barrel over 20 inches isn't a asset as far as velocity of the load goes.
Thats what I love about this board. You can actually learn things ![[Smile]](smile.gif)
The reason I ask this is because I'd rather carry a Benelli M2 tactical than a SBE
If the longer SBE gives me no advantage then why carry that long sucker
[ August 16, 2008, 08:06 PM: Message edited by: MULE ]
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Kickin' it on the Steppes. Livin' in my Yurt
My Hockey Mom can beat up your Community Organizer
Posts: 334 | From: Ulan Bator | Registered: Jan 2003
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TOM64
Knows what it's all about
Member # 561
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posted August 16, 2008 10:13 PM
I have had a Benelli M1 with a 21" barrel for several years now and recentlty I added a Benelli M2 Tactical with the 18" barrel. They both work fine but the old folk at the skeet range told me to put a muffler on the 21" gun.
For some reason I am in the middle of a trade for a SBE with a 28" barrel, I'm still asking myself why?
Posts: 2283 | From: okieland | Registered: Feb 2005
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Leonard
HMFIC
Member # 2
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posted August 16, 2008 10:57 PM
Mule, he told you the advantage, longer sighting plane. Also helps with ballance and follow through. Still a personal choice, but you should have some way of trying both before you conclude that short is better.
Good hunting. LB
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EL BEE Knows It All and Done It All.
Don't piss me off!
Posts: 32368 | From: Upland, CA | Registered: Jan 2003
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