They would need to acquire several technologies before even being able to produce smokeless gunpowder.@RyoSaeba it doesn't matter if gunpowder or the blueprints to make modern rifles were introduced to a medieval society like that. It would take centuries to be able to make gunpower more useful than just a bomb that is more expensive than magic and is harder to use than magic. The medieval society would need to first industrialize to mass-produce rifles, and even then the rifles that would be made are just muskets/bolt action rifles because modern rifles are too complex for a simple industrial society to make. This was tested back in the 19th century; what would happen when a country with only early muskets and close Napoleonic era formations were to be used against a country with Gewehr 98s. Well, due to the superiority of a dispersed army in which the soldiers have bolt action rifles who fire independently from each other, have cover, mobility, and in general, have much better guns will massacre the enemy's formation before they even get into a range in which they can fire. Sadly, even if the empire obtains this knowledge it would take several hundreds of years until it can be put to good use. By then I am sure that the true Earth(the one we live on) would already have colonies in space and the space age would have taken place, allowing for better space mining which would allow for better military technologies, making modern weapons for the 21st-century obsolete against. In conclusion, Introducing gunpowder will not change anything in the fantasy world, as magic is a better alternative compared to early guns and early explosives.
@RyoSaeba it doesn't matter if gunpowder or the blueprints to make modern rifles were introduced to a medieval society like that. It would take centuries to be able to make gunpower more useful than just a bomb that is more expensive than magic and is harder to use than magic. The medieval society would need to first industrialize to mass-produce rifles, and even then the rifles that would be made are just muskets/bolt action rifles because modern rifles are too complex for a simple industrial society to make. This was tested back in the 19th century; what would happen when a country with only early muskets and close Napoleonic era formations were to be used against a country with Gewehr 98s. Well, due to the superiority of a dispersed army in which the soldiers have bolt action rifles who fire independently from each other, have cover, mobility, and in general, have much better guns will massacre the enemy's formation before they even get into a range in which they can fire. Sadly, even if the empire obtains this knowledge it would take several hundreds of years until it can be put to good use. By then I am sure that the true Earth(the one we live on) would already have colonies in space and the space age would have taken place, allowing for better space mining which would allow for better military technologies, making modern weapons for the 21st-century obsolete against. In conclusion, Introducing gunpowder will not change anything in the fantasy world, as magic is a better alternative compared to early guns and early explosives.