Using Alchemy to Make Guns Is Perfectly Reasonable, Right?

My name is Claude, and I transmigrated. After the usual incident of getting hit by a truck to boost its numbers, I arrived in a Japanese-style fantasy world and was born into a family of alchemists. I thought transmigrating would make me a genius destined to reach the pinnacle of life. But for some reason, I can't make traditional alchemical products. The only things I'm any good at are changing the shape and composition of objects. After observing other alchemists at work, I concluded that the problem was that I wasn't chuuni enough. Fortunately, my memories from my previous life became unusually clear after I transmigrated. Since I can't manage traditional alchemy, I guess I'll just have to give the people of this other world a little taste of firearms!