ejection charge

i am currently building a 3.9 diameter rocket that is about 70 inches tall, i am building it on the lighter side if that matters and would like to know if the ejection charge from an aerotech g motor is enough to push the nose cone out? i was planning on having the nose cone easy to slide out. i'm not planning on using any type of piston system, it will be a just like a big estes version. any help?

1 to 1.5 grams should be fine.