Its supposed to shoot to the same poi but alot of older junk scopes didn' t which is why you still hear stuff, mostly from oldtimers about how a fixed power scope is better, more reliable. Thay maybe technically right but seems like most of the good brands worked that bug out long ago. If you have some older scope made by a company not well known for their craftsmanship I would definitely fire a few rounds to verify or stick to magnification that you sighted it in at.