Reducing recoil energy
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Gauge, length (oz. shot@MV) Gun weight (lbs.) Recoil energy (ft. lbs.)
.410 bore, 2.5" (1/2 at 1200) 5.5 7.1
.410 bore, 3" (11/16 at 1135) 5.5 10.5
28 gauge, 2.75" (3/4 at 1200) 6.0 12.8
20 gauge, 2.75" (7/8 at 1200) 6.5 16.1
20 gauge, 2.75" (1 at 1220) 6.5 21.0
20 gauge, 2.75" (1 1/8 at 1175) 6.5 25.0
20 gauge, 3" (1 1/4 at 1185) 6.5 31.0
16 gauge, 2.75" (1 at 1220) 7.0 21.5
16 gauge, 2.75" (1 1/8 at 1240) 7.0 27.6
12 gauge, 2.75" (1 at 1180) 7.5 17.3
12 gauge, 2.75" (1 1/8 at 1200) 7.5 23.0
12 gauge, 2.75" (1 1/4 at 1330) 7.5 32.0
12 gauge, 2.75" (1 1/2 at 1260) 7.5 45.0
12 gauge, 3" (1 5/8 at 1280) 7.5 52.0
12 gauge, 3" (1 7/8 at 1210) 8.75 54.0
10 gauge, 3.5" (2 1/4 at 1210) 10.5 62.9
Just as a comparison, that and i was bored
.410 bore, 2.5" (1/2 at 1200) 5.5 7.1
.410 bore, 3" (11/16 at 1135) 5.5 10.5
28 gauge, 2.75" (3/4 at 1200) 6.0 12.8
20 gauge, 2.75" (7/8 at 1200) 6.5 16.1
20 gauge, 2.75" (1 at 1220) 6.5 21.0
20 gauge, 2.75" (1 1/8 at 1175) 6.5 25.0
20 gauge, 3" (1 1/4 at 1185) 6.5 31.0
16 gauge, 2.75" (1 at 1220) 7.0 21.5
16 gauge, 2.75" (1 1/8 at 1240) 7.0 27.6
12 gauge, 2.75" (1 at 1180) 7.5 17.3
12 gauge, 2.75" (1 1/8 at 1200) 7.5 23.0
12 gauge, 2.75" (1 1/4 at 1330) 7.5 32.0
12 gauge, 2.75" (1 1/2 at 1260) 7.5 45.0
12 gauge, 3" (1 5/8 at 1280) 7.5 52.0
12 gauge, 3" (1 7/8 at 1210) 8.75 54.0
10 gauge, 3.5" (2 1/4 at 1210) 10.5 62.9
Just as a comparison, that and i was bored
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if you don't want to develop a flinch, keep a low power pneumatic ready, and after you shoot the big gun, shoot the pneumo, presto! no flinchRagnarok wrote:I wouldn't routinely shoot something with a recoil over maybe two or three times that because then you start to risk developing a flinch,
- Hailfire753
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If you are willing to use a bipod, you could decrease the recoil immensely, or negate it completely. Take a careful look at the bipod in this picture of a .98 cal Barret sniper "Shoulder Cannon". (It is not as clear in this pic as here, but they wouldn't let me link to it.)
Spikes. Transfer energy to the ground. The entire bolt and barrel of .50-.98 cal are also supported by heavy springs, but that would be difficult to impliment. I recomend a long stock with strong springs to achive the same effect.
EDIT: Fixed image
Spikes. Transfer energy to the ground. The entire bolt and barrel of .50-.98 cal are also supported by heavy springs, but that would be difficult to impliment. I recomend a long stock with strong springs to achive the same effect.
EDIT: Fixed image
UPDATED MARCH '08
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- frankrede
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Holy shit.Hailfire753 wrote:If you are willing to use a bipod, you could decrease the recoil immensely, or negate it completely. Take a careful look at the bipod in this picture of a .98 cal Barret sniper "Shoulder Cannon". (It is not as clear in this pic as here, but they wouldn't let me link to it.)
Spikes. Transfer energy to the ground. The entire bolt and barrel of .50-.98 cal are also supported by heavy springs, but that would be difficult to impliment. I recomend a long stock with strong springs to achive the same effect.
EDIT: Fixed image
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- Hailfire753
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Don't worry. If it misses by 3 feet of the target, the shockwave will only (still) turn the person's guts inside out. And seriously, if you read the page, the recoil is still too much for "human operation". But they are working on it.
UPDATED MARCH '08
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You need something like this
America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
- Hailfire753
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Almost an inch. 98% of an inch, hence .98 cal. I knew that would steal this thread. LOOK at the bipod, people.
EDIT: Whoops, double post. A video here tells that the muzzle break decreases recoil by 40%. A video here shows fireing without one.
EDIT: Whoops, double post. A video here tells that the muzzle break decreases recoil by 40%. A video here shows fireing without one.
UPDATED MARCH '08
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Oh my god I'm drooling...that rifle is beautiful.
Anyways, I built a hybrid a few months ago (still tuning it and sorting out problems) but I built a recoil absorbing stock using 1" pipe sleaved into 1 1/4" pipe with a heavy spring just to see if I could do it, and it worked very well.
But to further reduce the felt recoil you'll probably want a relatively heavy launcher and possibly a bi-pod.
Anyways, I built a hybrid a few months ago (still tuning it and sorting out problems) but I built a recoil absorbing stock using 1" pipe sleaved into 1 1/4" pipe with a heavy spring just to see if I could do it, and it worked very well.
But to further reduce the felt recoil you'll probably want a relatively heavy launcher and possibly a bi-pod.
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- jackssmirkingrevenge
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The spikes on the bipod actually do very little for recoil, the bipod would have to be bolted securely to a hard surface to actually make a significant difference.Hailfire753 wrote:If you are willing to use a bipod, you could decrease the recoil immensely, or negate it completely.
The key to reducing felt recoil is spreading it out, the Barrett does this by allowing the barrel to recoil separately. In the NTW-20, the whole action is free mounted in the stock:
I would go with something similar in conjunction with a muzzle brake.
hectmarr wrote:You have to make many weapons, because this field is long and short life
- ALIHISGREAT
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you could use a long recoil system like on this steyr http://world.guns.ru/sniper/sn46-e.htm where the barrel travells back a significant distance to help reduce recoil, it also has a massive muzzle brake.
I'd just call it 25mm, rather than converting to inches.Hailfire753 wrote:Almost an inch. 98% of an inch, hence .98 cal.
I'm personally more interested in the computerised sights than the bipod.
@Eddbot: A low power pneumatic? You think I would keep those around here?
Besides, for safety reasons, there is never more than one loaded launcher on my "range" at any one time.
Does that thing kinda look like a big cat to you?
Should there also be a bracket around the 7000 x Wr?bluerussetboy wrote: E = 1/2 (Wr / 32) ((Wb x MV + 4700 x Wp) / 7000 x Wr)2
Edit: thanks ragnarok for straightening out the formula
Using that formula (with brackets around 7000 x Wr) and removing the powder term, I get above 50 ft-lbs for my horseshoe launcher. I'm a little guy around 130 lbs and the recoil is manageable. It hurt pretty bad without a proper pad, but I got a shotgun recoil pad and it no longer hurts, although you can still feel the kick pretty good. I wouldn't want to go much above that without something else to help with the recoil.
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