I own a gun range. I also like to save money & build stuff as much as I can. We shoot USPSA matches here.
The OP needs a swinger (or more than one,) for matches. That adds a certain level of demands upon a target of any type.
It has to be sturdy. It has to be capable of withstanding a lot of errant shots to portions of the frame, activation pieces, base etc. AND still be perfectly functional. Otherwise,, if a group of shooters have already shot a stage, and then an errant shot damages the target beyond immediate & perfect repair, then the entire target must be replaced with an identical target or the stage gets thrown out. No competition shooter who shoots a stage very well likes to see a good stage thrown out because of mechanical failure.
The cost of $295 for a swinger may seem steep,, but ask what GRADE of steel is used? More likely,, AR500 or AT500. That stuff is expensive. Then factor in fabrication, and of course,, a business has to make a profit. That's why prices are where they are.
The above hand built swinger looks GREAT! I like it. And I can see it working for matches with a few modifications. Mainly, to protect the framework from errant hits upon weak points. And if the wooden uprights are replaceable,, then it must be capable of QUICK replacement parts already assembled, so that a squad isn't standing around 30 minutes or more while a "Mr. Fixit" is trying to replace or repair something.
I have built steel target stuff,, including swingers for my range from stuff I had "laying around." But I also build them with an eye on the main thing; "What if it takes a direct bullet hit right here?"
Just last weekend, at our monthly match. A shooter was looking at my Texas Star, and saw the obvious hit in the very center of the star. he made a comment on that. We are talking 2-1/2 FEET away from where any of the steel plates were at in any direction. And you can look at the arms of the Star & see other hits as well. My Star has a AR500 plate in the center to protect the roller bearing parts, as do all moving targets of competition quality.
My points are simple. While PVC or wood is an easy, less expensive option for casual plinkers, a competition target system must be built to withstand errant hits and NOT fail. Plus, any parts on a good system must be easily & quickly replaced with identical stuff to prevent any differences in the stage from the first shooter to the last shooter. I have seen several good stages where the props failed due to this and the stage get thrown out.
I completely understand where you're coming from, but the OP wasn't asking for a USPSA approved target stand.
So let's look at what you get for the $295 "commercial grade" swinger.
The main upright is made from 5/16" angle iron.(mild steel)
The cross bar for the target mount looks to be stamped steel, with lots of exposed bolts and open areas where a stray bullet could get through to the bearings.
In this picture you can actually see one of the bearing assemblies from the front view. It may be just me or the way the picture was taken, but the bearing mounting plate looks like it is flexing just from the weight of the swing assembly....
The upright pockets are only partially welded instead of a full length weld.
Although they say on their website "In our research, broken welds were the leading quality problem and frustration cited by the police and private range officials we interviewed.", they still use
partially welded joints.
Their website also says "Our target assemblies use hardened, round head carriage bolts". Those pictured with 3 marks are regular grade 5 bolts...
All of those bolts can take a direct hit from a stray bullet since they are exposed.
Their adjustable counterweight has 2 positions available, upper and lower for fast or slow swing.
They are bolted to brackets, so tools are required for adjusting.
Also in this picture you can see how exposed the bearings are.
To adjust the width of the target from 18 to 24 inches you have to remove 4 bolts and put the arms in different holes.
I searched their website and no where could I find where they were made, so that usually means "made in China", or some other foreign factory. Manufacturers of this type of equipment usually tout the fact they are made in the USA, if they are.
They claim this target will swing over 2 1/2 minutes after activation.
I am not nor do I claim to be a professional builder. I enjoy the challenge.
So here is what I came up with.
The upright is a 1 3/4" hardened chrome plated solid steel shaft. The bearing support is 3" x 4" solid steel and was drilled for the upright to go into it and then welded in place. The swinging assembly can be removed by pulling one cotter pin. No tools needed. The bearings used are easily replaced and are a very common size.
The cross plate is doubled 4" wide steel that is 1/2" thick.
I used knobs on the back side to clamp the targets in place. You can use whatever width target you want, up to 36" wide. You could even just use plywood without furring strips since I made the back plate clamp full width. I used some 1 1/2" square deck rail spindles screwed to 1/4" luan I had left over from another project.
Here also, no tools needed to change target styles. It takes about 30 seconds to replace the target with a fresh one.
For the counterweight, I casted some lead "cupcakes" and then machined them down so they are all the same exact weight. I put 5 holes so the swing speed can be fine tuned.
Here again, the weights can be adjusted by pulling a pin. No tools needed. I guess I could add a steel plate in front of the counterweight to prevent stray bullet hits.
I timed it and with the weight in the bottom position, it still had about a 10" swing, measured at the weight, at the 4 minute mark.
The whole target stand can be disassembled in just a couple of minutes if needed,
without tools....
(The picture above shows a bolt at the bottom of the upright but that has been replaced with a thumbscrew.)
Here are the 2 target stands disassembled. (minus one base)
The base legs have holes so they could be anchored to the ground if needed, but since they weigh probably over 100 pounds assembled, I doubt you would need to.
Completed swinging target.
The shaft mount plate that everything is mounted to is the beefiest part of the assembly. 3/8" steel.
From the front there is no where a stray bullet can get to operational parts.
I have not tested this stand with different calibers yet, but I have a 3rd identical one in the works that I plan to brutally test. These 2 are for
@Tim
The last target stand I did test after building was this spinner target. You can't imagine how fast those little plates will spin when hit with a 50 Beowulf. Lol
And by the way, they survived the 50 Beowulf and my 460 magnum.