I have a Murata Type 22 rifle so I recognized it. The carbine is uncommon as is having the bolt head with your bolt. Most of these rifles were used pretty hard during the 1894 Sino-Japanese War and also during the Boxer Rebellion. All of the ones I have seen have had the bolt head removed and have the three concentric rings stamped over the mum. The concentric rings mean it was deemed unfit for service and was relegated to being a training or "school" rifle. I couldn't tell from the glare on your picture if the mum is stamped with the rings, if it is you shouldn't shoot it. It was a pretty amazing rifle for the late 1800's because it was a tube fed bolt action. Mine is a first series and was made the same year we were still using the Trapdoor Springfield, 1889.