Alberta
.275 member
Reged: 03/12/07
Posts: 66
Loc: Canada
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I would like to calculate out what kind of recoil ft/lbs my rifle is producing and at what rearward velocity.
I am shooting a 9.8LB rifle with 97g of powder and 400g bullets at 2510fps.
What I did was load up my 416 Rigby (Ruger RSM) untill I could not take it any more to find my limit. This is a bit more recoil than I feel I could or should regularly take. The reason I would like to know the numbers is I am planning on buying a double and want to be sure I am not going to go into silliness in the recoil department.
I know that there are many factors in "felt" recoil such as stock design, bbl weight and length but I would just like to get an idea of the actual calculated recoil. Then compare it to things like the 470, 450-400, 500-416, even the 500 at the usual weights these guns are made at. It's not perfect science but fun none the less.
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pinotguy
.275 member
Reged: 03/02/07
Posts: 57
Loc: CO
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Here's a link for recoil calculation - http://www.beartoothbullets.com/rescources/calculators/php/recoil.htm
For the numbers you've listed, you're looking at around 66 ft. lbs. @ 21 FPS. Fairly stout, I'd say.
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eagle27
.400 member
Reged: 24/01/09
Posts: 1215
Loc: Rolleston, Christchurch, New Z...
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By my calculations your rifle will recoil at 21.3fps with an energy of 69ftlbs
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eagle27
.400 member
Reged: 24/01/09
Posts: 1215
Loc: Rolleston, Christchurch, New Z...
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pinotguy, you beat me by a few minutes while I was writing an excel formula for the recoil velocity and energy for a gun.
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NitroX
.700 member
Reged: 25/12/02
Posts: 40664
Loc: Barossa Valley, South Australi...
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I've used the beartooth online calculator in the past too.
I would LOVE to put some of these formulae up on NE as online calculators too.
Anyone know how to do it?
-------------------- John aka NitroX
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Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"
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DarylS
.700 member
Reged: 10/08/05
Posts: 27707
Loc: Beautiful British Columbia, Ca...
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That's pretty cool with the Bear-tooth formula - My 14 bore rb gun somes out at 50 foot pounds recoil, at 19fps speed.
the .375/06IMp comes out at 39foot pounds at 17fps.
-------------------- Daryl
"a gun without hammers is like a Spaniel without ears" King George V
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Alberta
.275 member
Reged: 03/12/07
Posts: 66
Loc: Canada
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Quote:
Here's a link for recoil calculation - http://www.beartoothbullets.com/rescources/calculators/php/recoil.htm
For the numbers you've listed, you're looking at around 66 ft. lbs. @ 21 FPS. Fairly stout, I'd say.
Thanx for that. It is easy to use and perfect for messing around.
I am also trying to develop a very low recoiling 7-08 load for a kid's gun, and this is great for that job too. Trying to get it down to about 243 type recoil, looks possible.
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VonGruff
.400 member
Reged: 08/02/09
Posts: 1119
Loc: South Otago, New Zealand.
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Here is the one I use for recoil. http://www.huntamerica.com/recoil_calculator/
Exterior Balistics http://biggameinfo.com/index.aspx?page=/balcalc.ascx
Terminal Balistics pages http://www.rathcoombe.net/sci-tech/ballistics/wounding.html
Von Gruff.
-------------------- Von Gruff.
Exodus 20:1-17
Acts 4:10-12
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chuck375
.333 member
Reged: 13/10/07
Posts: 445
Loc: Colorado Springs CO
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I regularly use these:
recoil:
http://www.handloads.com/calc/recoil.asp
kinetic energy and TKO values:
http://www.handloads.com/calc/quick.asp
ballistic calculator:
http://www.biggameinfo.com/BalCalc.aspx
-------------------- "There's a saying in prize fighting: Everyone's got a plan until they get hit"
Michael Douglas "The Ghost And The Darkness"
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bigdog
.375 member
Reged: 05/02/06
Posts: 559
Loc: Southern Illinois
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If you just have a calculator with you and no computer bullet weight in grains x velocity in ft per second x velocity in ft. per second all divided by 450,300 this gives you energy in ft.lbs.
-------------------- Kyle, I love you buddy, Dad
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