Yes, it is true. And yes, I'd hunt with them anyway.
Bear Razorhead History:
In 1956, Bear Archery formally introduced the Razorhead to the public. Known today as the "Bubble-Head" by many collectors because of the rounded ferrule tip, this broadhead was an instant success. Good quality steel, easily sharpened and aligned to the arrow, the Razorhead was on it's way to becoming the largest selling broadhead of all time.
But Fred found a small problem with this original design. The "Bubble" on the tip of the ferrule was affecting penetration. So in 1959, Bear began flattening the ferrule tip to improve this situation. However, the vents on the 1959 Razorhead remained large as with the original 1956 model.
In 1960, a new die was made, with the vents made smaller and the ferrule tip even flatter. Lastly, in 1964, the vents were changed again, looking much like a die-cut parabolic feather shape now.
The Super Razorhead was introduced in 1978, and the era of the old lime-green Razorhead came to a close. However, these new Super Razorheads did not have a reputation for holding up under use and lost favor with the masses of bowhunters in time. However, Bear Archery’s ability to market better than anyone else kept this broadhead in tackle boxes. Finally, in 1981, the Stainless steel version of the Razorhead came out, but it is the old lime-green Razorheads that remain popular with bowhunters today both as collectors, and as shooters.