The 1754 pattern was a good musket, but the French Infantry had their complaints, it was long and considered heavy and difficult to shoulder due to the deep butt stock, and the French did a study on the barrels wearing down due to loading and firing and cleaning. The barrels inner walls would loose about .0008 of metal per service year and would need to be redressed and the muzzle or cut down to carbine size, this of course was considered unacceptable by the French Armories. The 1754’s locks were designed with heavier springs, which was very reliable for ignition however one issue, the springs were too strong for the swans neck cock which broke often. So with few wars going on, the French 1754 was more or less of an experimental design produced in much less numbers than its predecessors. Which gave birth to the 1763, in an effort to correct all of the 1754’s the French redisgned their muskets ironically making them heavier but much more durable and reliable.