doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com A5 Felt Recoil Tester

an interesting experiment would be to fire various rst loads in an a5 to identify those that failed to cycle the action...

my hunch is that few or none would cycle the action...

Recoil is weight x speed

Don’t waste the ammunition

clap, felt recoil is a result of energy...in relation to weight...

that is why firing a load in an eight pound gun feels better than firing the same load in a six pound gun...

the point of all this is to find factory loads that produce relatively low felt recoil...

Ke is 1/2m (vxv)
Velocity change has a much greater effect on the recoil than the change of the charge weight.

Lots of people know that obviously you don’t

Recoil increases with the square of the velocity increase

You cannot reliably use whether or not an A-5 will cycle as a reliable determinant of ammunition suitability for an old shotgun

If you keep everything constant except for the ammunition you can use and A-5 to compare the various loads

But because of the complexity you are better off to use an old H&R single shot.

again, loads that do not produce enough energy to cycle an a5 also produce less felt recoil...than loads that do cycle an a5...

it is felt recoil that damages old gons...so the less the felt recoil, the less the potential for damage to your old gon...

tell me why this theory is false...

You cannot illuminate for the blind, what they refuse to see.


Ed, you are trying to use the A5 as a go/no go, gauge.

How do you know that nothing else is changing except the recoil of the cartridge?

How do you account for things like friction

Hang an A-5 on a string, put a string around the trigger and touch one off.


The math of recoil is clear.
The time element varies

Test it for yourself.

Jig up an A-5 against a tree so that nothing can move and start touching off ammunition.

You have a formula, so use it. Start with a 900 ft./s trainer load and see if it ejects them.

The speed of the load has the greatest impact on recoil.

Since you have two variables, test four loads at increasing velocity‘s, and then test four different payloads at the same velocity.
Otherwise, you won’t know which is which. Is it the load or is it velocity? the world doesn’t really want to know, lol.

About the best you will be able to come up with is that your particular A-5 needs at least X amount of recoil to eject a shell.
You won’t even be able to use the word reliably, because your universe of testing will be so small.

I doubt you were going to use $200 worth of RST ammunition to find out that kinetic energy equals 1/2 MV squared.

Yet you have spent a day and seven posts trying.

"Never wrestle with a pig. You both get dirty and the pig likes it." ― George Bernard Shaw

clap...you continue to suggest the quanitative approach to theoretically determine those advertised light factory loads that would produce low felt recoil...in order to validate your calculations, you would still have to test fire factory loads that theoretically fit your calculated criteria...without using a test platform, like an a5, you would have to go by feel only...

what i propose is a qualitative approach, that ignores calculated expected outcomes...instead, utilize a test platform to rule out those factory light loads that will cycle an a5... the idea being that those loads produce too much recoil energy to be suitable for use in old doublegons...and that those factory loads that produce too little recoil energy to cycle an a5, may or may not be suitable for use in old doublegons..,.

how else would one practically determine which factory loads produce the least felt recoil?

an stan, you remind me of one of those guys who steadfastly declared that it is theoretically impossible for man to fly...so why bother trying...

and when all is said and done, perhaps there are no advertised light factory loads that will fail to cycle an a5, held to ones shoulder in the normal shooting position...

but, it would be educational to find out via actual test firing...