Let's take a break from harmonics and look in detail at ways to sling airguns.
As a custom gunsmith, I am often requested to put sling swivels and add a sling to the package.
When I ask the customer HOW he would like his rifle slings installed, the answer is always: "As always", or "The only way you can do it".
In reality there are two major ways of installing slings in sporting rifles and within those two ways or locations, you can choose between two hardware styles
The first location and indeed common to the edge of being the only one seen commonly in the USA is what we will term the "American Way". And it is basically en evolution of the military form of slinging the bolt actions: Slings go on the bottom of the stock because rifle is always carried muzzle up
When the rifle is carried up and down 99% of the time, the rifle lies flat against the back and provides a much more comfortable "carry".
A slightly better installation (and more expensive), is the "Pachmayr Flush Mount" swivels, not always easy to obtain:
The bronze inserts on the left were made to use the tool to locate more conventional swivel holes.
Of course, you can mix and match, as you see fit:
But, ¿what can you do with breakbarrels?, some may ask.
Well, in essence you can choose how to install the rear swivel in any of the two ways: bottom or side, but the front?
I like to install it as far to the rear as possible, because in that way it interferes the least with the shooting itself.
It does need some care in the installation because there is a hollow screw that attaches the two sides.
I always recommend a muzzle down carry with this method, but it is not always possible to do it comfortably if the customer chooses the bottom installation of the rear swivel.
The other option for break barrels is to simply replace one of the front stock screws by a stud.
As you can see, it is not difficult to sling an airgun, you just need to be a little ingenious.
Keep well and shoot straight!