by B.B. Pelletier

Today’s report is about mounting the new Bronco Target Sight kit on an Air Venturi Bronco and seeing how it works. The kit consists of a peep sight for the rear and four riser plates with two long screws to raise the front sight high enough to work with the rear.

I tested the Bronco extensively in 2010 and wrote seven reports about it then. If you’ve been a reader for some time, you may remember that I even mounted a Williams peep sight on the rifle and tested it for you. So, today’s question isn’t whether the rifle can shoot with a peep, but rather how this new sight and riser plate set attaches and works with the gun.

The installation is pretty easy. Just unscrew the two front sight screws and attach the four riser plates under the front sight base with the longer screws. It took less than five minutes and there were no tricky parts.

The Bronco front sight as it comes from the factory.

These four riser plates lift the front sight up to work with the rear peep sight.

The installation of the riser plates is quick and easy.

Once the plates were installed, they were rigid and looked like they belonged there. They’re keyed to each other so they don’t slip around once the screws are tightened.

The rear sight
The rear sight is really what this kit is about, both because it is much less expensive than the Williams rear peep sight that is, unfortunately, no longer available and also because it does exactly the same thing. Since this is a cheaper sight that could be just as good, it would would be a find if it proves true.

The sight is made more rugged than the Williams sight and mounts easier. Where the Williams has two very small screws pushing on a dovetail for mounting security, the Mendoza sight is made with larger parts. The screws are also proportionately larger.

Like the front riser plates, the rear sight was a quick installation. Just slip the dovetails into those on top of the Bronco’s receiver and tighten the two screws.

The rear peep sight attaches with two screws. The adjustment knobs are knurled.

Is this a better sight?
That’s a question I’ve heard several times in reference to this sight. What does “better” mean? This sight does exactly the same thing the $60 Williams peep sight did, yet it costs a lot less. It has target knobs, which only the more expensive of the two Williams target peep sights had. Each knob has crisp detents, so you can feel the adjustments as they’re made. Everything works as it’s supposed to, and the machining is excellent — this sight is the equal of the more expensive and now unavailable Williams peep sight.

The one drawback this Mendoza-made rear sight had that the Williams didn’t was the inability to adjust low enough to work with most front sights. The Williams could be modified to go very low and this one can’t. Well, that’s what the riser plates are for, so that problem has been solved.

Testing the sight
Naturally I had to test the new sight set as anyone would, and I expected no problems. We already know about the legendary accuracy of the Air Venturi Bronco, so this sight should help it shoot its best.

I can tell you that the adjustments do move the impact of the pellets in the directions they should. And the movements are small, as you would hope from a 10-meter sight.

Not today!
Unfortunately, I was not up to the task of shooting today. I don’t know what the problem was, but I could not get the new sight set to give results that were even as good as I got with open sights back in 2010. If I hadn’t shot several extremely tight groups at 50 yards with my new Remington model 37 target rifle just last week, I would wonder if my accuracy was slipping, but I know it isn’t. But something is wrong, because I’m not getting the tight groups I got two years ago with the same rifle.

Ten JSB Exact RS pellets made this 1.169-inch group.

Ten H&N Finale Match rifle pellets went into 1.668 inches at 10 meters. Nine of them went into a group measuring 1.114 inches.

These are not good 10-meter groups, yet we know from past experience that this exact rifle is very accurate. So the thing that’s changed is either me or the sights. I re-read Part 3 of the Bronco report and discovered the rifle likes to be shot off the backs of the fingers. That’s an alternative artillery hold that I didn’t try yet, but I’m going to.

So, there’s more to come. But at this point, I can say that the new sight set is a good one and it works as you would expect. It’s a shame I didn’t get the performance we were expecting from the gun in this test, but I remain confident that it’s me and my technique and not the rifle.

That’s why this is Part 1.