Teacher:Generate a correct and concise answer for the question based on the words in the context.
Teacher: Now, understand the problem? Solve this instance: Context : The Ross Mk.II (or ''model 1905'') rifle was highly successful in target shooting before WWI, but the close chamber tolerances, lack of primary extraction and overall length made the Mk.III (or ''1910'') Ross rifle unsuitable for the conditions of trench warfare and the often poor quality ammunition issued.
Question : What year was the service entry date for Ross rifle?
Student:
1905