You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Use of wadding in a smooth bore gun rifle 'produces all except - and explain in detail?
Functions of wad are:-

(i) It separates the projectiles from propellant.
(ii) It seals the bore effectively.
(iii) It prevents expanding gas from escaping, and
(iv) It allows optimum pressure to develop.

The felt wad is impregnated with grease and this lubricates the bore.