Me too. I used the led pucks from Canadian Tire. These were $5.00 when I bought them and they
included Batteries.
.

I just acquired one of the $25.00 chronographs from AliExpress which appears to function indoors as well as under other lighting conditions.

Then I got the Chronograph. Amazing! Super cool unit, huge enabler of learning. Love it. Absolutely necessary for any mid-level hobbyist or expert, in my mind. However, it took a good deal of time and effort, and a ton of patience, to figure out how to make it work consistently. I can understand why a good number of people are dissatisfied with them and bail. Figuring out how to light it was the trickiest part. I tried to light it with a LED work lamp I had. Hung it this way, that way. I certainly didn’t want to buy the proper accessory lamps; I didn’t want to spend another 60 bucks and I didn’t want a couple power cords hanging off that I had to plug in. And I had read reviews where plenty of people struggled to make them work, too. With more research I read lots of success stories using little LED lamps. The first store I went to had little headlamps, cheap to begin with, they were on sale for like 3 bucks each. And they were bright enough, I can’t remember, 200 lumens or something. I got good batteries on sale, still a bit expensive, quite a bit more than the lamps themselves. But LEDs don’t use a lot of power, the batteries will last. I don’t use the Chrony every time I shoot. I didn’t use the headbands from the lamps, I used a couple small, heavy elastics from broccoli, those blue ones. Put them around the diffusers. Clipped the lights in. Perfect! Super minimal, portable, plenty bright. Then it was finding the sweet spot to shoot through, alignment and how close to the sensors. I still get the odd error, it sometimes doesn’t like the first 2 shots or I’m struggling with alignment on a top target, I might miss 3 or maybe 4 even. But I’ll have multiple sessions of 10 shots and it reads every one. I set the Chrony on a small tripod on a table in front of my bench rest. But I also got a good, adjustable, tall tripod from the thrift store for 12 bucks. I haven’t done it yet but I would be confident taking it outside or to the range.

But the learning you get with improvements and pellets is astounding! Some other models were sold out so I got the Alpha Master, it has the wired display unit. Super cool! Having the display and control right there while shooting, and putting it on my knee after the session while I make notes is amazing! Love it!

I paid regular price for this, totally worth it. I see that it’s just gone on sale at D&L for $170.

Cheers