John - many inlines will throw a shower of sparks from the 209 primers. While I have never shot a sidekick in low light conditions, I have shot a few other brands and I am sure the sparks were just as impressive. Not as impressive as a flintlock mind you, but as for being safe, I am sure it is. You might try a cooler primer like the Remington Kleenbore or the Winchester Triple Se7en I have heard about. Whether that will reduce the light show I do not know.