Bore Diameter relative to Recoil in SAME WEIGHT bullets

[98s1lightning]

If you take Surface Area of bullet
Multiply
π • radius squared (can't write it on my keyboard)

Then apply Force
Use a constant of whatever it may be to launch said bullet to 2800fps is it something like 50,000psi (I could be way off here I'm attempting to communicate)

Will bullets of SAME WEIGHT recoil more in larger diameter caliber if rifles weighed the same and applied force was the same? (or maybe this is where I don't understand it may take different amounts of force since surface area is different?)

I don't know how to word it exactly, but I think a 100gr 22cal, and 100gr 30 cal at same speeds will recoil differently if rifles weigh the same.

At the risk of sounding like a dummy, I've wondered about this. There's some incredibly smart people on here that will set me straight!

 

[98s1lightning]

There's a lot more friction-to-rifling on a long 22 bullet then a short 30

So that's a factor

 

[jebel]

Recoil energy is a function of the weight of the rifle on the one hand (full weight includes everything attached to it) versus the weight of what you're forcing down the barrel (weight of bullet plus weight of powder) and how fast you're pushing it (velocity).

The caliber of the bore doesn't come into it directly. Though as mentioned above, like weight bullets will be longer in a smaller caliber, requiring more pressure to get it to the same velocity.

Not sure if this gets to what you were asking.

 

[ARlife4me]

Seems like once engraving starts the force isn't as much? I'll state this, having 2 guns with 2 different bores 458 and 30cal creating the same muzzle energy, the 458 (45-70) has less recoil felt or not than my 300wm.

 

[doug2080]

I would think it may pertain more to the amount of powder in said cartridges maybe? Say for instance a120-125 grain bullet out of a 25-06 your max powder charge is gonna be around 50 grains depending on the powder. Same grain bullet in say a 300 RUM is gonna be closer to 110 grains max load. The more powder the bigger the boom?

 

[Gary in MD]

No where in the equation for calculating recoil will you find "bore diameter"