If current trends continue, the U S population is projected to be 438 million in 2050. Assuming all 5500 Registered Magnum revolvers still exist, 438 million divided by 5500 is just under 80,000. Of course 100% of production would not be extant. So, in order for these to remain popular and account for all production out there, this means only about 1 out of 80,000 or 100,000 individuals would have to have an above average interest to account for all still in existence. Of course, some folks will own more than 1, or many, further diluting the ratio. If we cannot round up a population base of about 1 in 100,000 folks having an interest in these in a mere 30 years we are in for bleak times indeed.