Question about felt recoil

[chevyman181]

How does a person calculate felt recoil?

Say all things are the same except the cartridge... 8 Pound rifle, 162 gr 7mm bullet, at say 2900fps, is the felt recoil the same no matter what cartridge is pushing the projectile?

7-08, 280ai, 7mag, 7saum, if they are all in an 8 Pound rifle shooting the same 162gr projectile at the same speed, will the felt recoil be that much different?

I know the 7rum uses way more powder than 7-08 just curious if the powder charge has any effect if it's pushing the same projectile at the same speed.

Thanks

 

[Fire_9]

There are calculators that do it. Of course the 7 RUM is going to have more recoil than the 7-08.

 

[noharleyyet]

The size, duration, and color of the bruise near the insertion of the anterior deltoid.

 

[BackofBeyond]

In what world would a 7HT and 7RUM be shooting the same projectile at the same velocity?

 

[Carl]

How does a person calculate felt recoil?

Say all things are the same except the cartridge... 8 Pound rifle, 162 gr 7mm bullet, at say 2900fps, is the felt recoil the same no matter what cartridge is pushing the projectile?

7-08, 280ai, 7mag, 7saum, 7 rum, if they are all in an 8 Pound rifle shooting the same 162gr projectile at the same speed, will the felt recoil be that much different?

I know the 7rum uses way more powder than 7-08 just curious if the powder charge has any effect if it's pushing the same projectile at the same speed.

Thanks

The powder charge weight also effects recoil as all the powder is pushed out of the barrel as well.

I often include recoil calculations when I'm bench racing options, I use JBM's calculator:

JBM - Calculations - Recoil

www.jbmballistics.com

Input looks like this:



Output looks like this:

 

[p_ham]

Powder charge does have an effect, velocity aside. Gasses do have weight. More gas equals more weight. You can calculate recoil energy. Felt recoil will vary by stock design and action type.

 

[Forkyfinder]

In what world would a 7HT and 7RUM be shooting the same projectile at the same velocity?

Maybe a 300 wsm and 300 win mag would be a better example.

 

[BackofBeyond]

Maybe a 300 wsm and 300 win mag would be a better example.

Absolutely, those two have a very similar case capacity. But to translate the original question to .30 caliber, what would recoil be like for a .308 and a .300 RUM pushing the same projectile at the same speed? We’re comparing volume (powder capacity) of a kumquat vs a watermelon.

 

[Forkyfinder]

Absolutely, those two have a very similar case capacity. But to translate the original question to .30 caliber, what would recoil be like for a .308 and a .300 RUM pushing the same projectile at the same speed? We’re comparing volume (powder capacity) of a kumquat vs a watermelon.

300 wsm has like 10% less capacity and has similar speed with light bullets from factory ammo. Or .30 tc to .30-06

I think the original question is an exaggerated example but you could compare it with other practical examples too.

 

[chevyman181]

Yeah, the rum was exaggerated. I edited the question. I'll play with the calculator posted.

I googled a couple of calculators and they didn't show much difference in recoil with change the size of the cartridge and all other factors staying the same. Weight of rifle and projectile, velocity, and so on. I was a little surprised.

Thanks for input.

 

[noharleyyet]

I've heard comments regarding 300WSM & 300WM...one that the short mag pushes rather than hits. IMO, not true, both crack ya about the same.