Ruger Recoil in a spring piston break barrel

[Bear-of-Grayling]

That is confusing, so why then do people advise to get a springer rated scope? They say the recoil and forward movement will destroy a scope.

When a firearm is deployed, the bullets created energy pushes the gun rearward toward the shooter. Scopes are designed to take that sudden burst of rearward motion. The reticle (crosshair wire) is reinforced on the one side so as not to break. When a springer is deployed the massive piston launches forward to slam against the front of the receiver, pushing the gun away from the shooter. Opposite of a firearm. The scopes reticle is not reinforced on the other side for this violent forward snap. Can destroy even high dollar scopes. A true “springer rated scope” is reinforced on both sides of the reticle. Scope manufacturers are moving towards etched glass reticles (as opposed to wires) these days and they seem to hold up quite well on springers. Not to long ago an etched glass reticle was only found on high end scopes. But this is changing.

 

[jkingrph]

Is the recoil changed by using lighter or heavier pellets? Lighter pellets lighter recoil, heaver pellets heavier recoil? Does that recoil change the point of impact from the point of aim? Again, I am shooting a spring piston break barrel. Trying to get tighter and more consistent groups.

Probably, but in the case of an airgun it would most like not be noticeable. In the case of powder burners, discounting weight of the gun, recoil is a function of bullet weight and the weight of the powder charge. The powder charge is also propelled down the barrel as it burns. With a spring air gun the only thing that should change is the pellet weight, the weight of air being compressed is the same, assuming barometric pressure remains the same, but again probably of not much consequense.