I had never heard of the word "oftener" and thought it was made up. Turns out it is a real word, but its very old fashioned. A better way to phrase it would be "fires 3% more often", or even shorter "fire rate +3%".
First devlog comment, big milestone. Thank you :DI am trying to use old fashioned and retro words in Lowmoor. I have found ''oftener" in old dnd module.