Author Topic: Recoil for 7mm-08, and 308  (Read 792 times)

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Offline Buckfever

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Recoil for 7mm-08, and 308
« on: August 22, 2004, 05:43:08 AM »
I need a real world reality check!  While reading a Internet based recoil table it listed a 7mm-08 with a 154gr. bullet to have a recoil value of 163.9 and the 308 with a 150 gr. bullet to have a recoil number of 135.3.
Can this be true?  Does a 7mm-08 have slightly more recoil than a 308 with 150gr. bullets?  The table goes on with other bullet weights and for close to similar weights the 7mm-08 is slightly higher. The table is at
www.accuratereloading.com/recoil.html  If this is true maybe a 308 has a slight advantage because it has a very large premium bullet selection?

Thoughts?     Buckfever

Offline quickdtoo

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Recoil for 7mm-08, and 308
« Reply #1 on: August 22, 2004, 06:00:25 AM »
Maybe this table will make more sense.

http://www.chuckhawks.com/recoil_table.htm
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Online Graybeard

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Recoil for 7mm-08, and 308
« Reply #2 on: August 22, 2004, 12:33:32 PM »
With same weight bullets (which 150 and 154 basically are) running same velocity in rifles of same weight you shouldn't feel any difference. I have no clue what those numbers you gave mean. But a 154 from a 7-08 and a 150 from a .308 will feel the same to your shoulder IF the rifles are both pretty much the same. Different rifles or different weights of rifle can make a lot of difference.


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Offline Iowegan

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Recoil for 7mm-08, and 308
« Reply #3 on: August 23, 2004, 07:18:57 AM »
The reason most sources say a 7mm-08 has lighter recoil is the optimum bullet weight is 139-140 grains. The 308 typically optimizes with a 162-165 grain bullet. This is not a "fair" comparison for recoil.

"If this is true maybe a 308 has a slight advantage because it has a very large premium bullet selection"?  The 7mm bullets have a very large selection to choose from, the same as a.308.

The weight range for a 7mm-08 is 115 gr to 175 gr. The weight range for a 308 Win is 125 gr to 200 gr. As you can see, the larger bore diameter favors a heavier bullet, however there is a considerable overlap.
 
I would go along with Graybeard's analysis. If the muzzle velocity, bullet weight, and gun weight are the same, the recoil should feel the same.
GLB

Offline Questor

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Recoil for 7mm-08, and 308
« Reply #4 on: August 23, 2004, 10:55:13 AM »
It's really helpful to own a copy of pointblank software. It's a freeware utiliity that is excellent for answering questions like this. It can be downloaded.  

There does seem to be a lot of BS about relative recoil. Gun weight plays a big part in the equation though, so make sure your assumptions include guns of the same weight. Even a one pound difference makes a big difference.
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Offline lilabner

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Recoil for 7mm-08, and 308
« Reply #5 on: August 23, 2004, 01:28:39 PM »
You have to consider every factor on these tables to make sense of them. The table you referred to shows the weight of the rifle in 7mm-08 cal. as a half pound less than the weight of the .308. Lighter rifle and heavier bullet = more free recoil.  In considering the identical make and model of rifle, the 7mm will normally be heavier than a .30. Why? Smaller hole in the barrel - more metal left.  So if anything, loads generating equal pressure and with equal bullet weight could recoil a tad less in the smaller caliber. If you want punch but light recoil, stay away from featherweight rifles.

Offline Chuck White

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Recoil for 7mm-08, and 308
« Reply #6 on: August 24, 2004, 04:51:04 AM »
Quote from: Questor
It's really helpful to own a copy of pointblank software. It's a freeware utiliity that is excellent for answering questions like this. It can be downloaded.


Where would one find this freeware to download?

Thanks;
Chuck White
USAF Retired, Life Member, NRA & NAHC
Don't matter what gun you use,
just get good with it!

Offline quickdtoo

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Recoil for 7mm-08, and 308
« Reply #7 on: August 24, 2004, 05:24:23 AM »
Quote from: Chuck White
Quote from: Questor
It's really helpful to own a copy of pointblank software. It's a freeware utiliity that is excellent for answering questions like this. It can be downloaded.


Where would one find this freeware to download?

Thanks;


Right here....

 :grin: http://www.huntingnut.com/pointblank.html
"Always do right, this will gratify some and astonish the rest" -  Mark Twain

Offline Chuck White

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Recoil for 7mm-08, and 308
« Reply #8 on: August 24, 2004, 12:10:49 PM »
quickdtoo;

Thank You.
Chuck White
USAF Retired, Life Member, NRA & NAHC
Don't matter what gun you use,
just get good with it!

Offline Don Dick

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Recoil for 7mm-08, and 308
« Reply #9 on: August 29, 2004, 04:18:04 AM »
lilabner is right.  My mountain rifle in 7-08 kicks harder then 308`s
I have owned.    Its all a direct result of bullet and rifle weight.
Some people come into our lives and quickly go.  Some stay awhile and leave footprints on our hearts.  And we are never.  Ever the same.   Authur unknown.  In memory of my son Jonathan.