CAL's book tells that DI Cook didn't wear gloves and moved the rifle by its straps. According to him there would be no chance of removing prints from these locations. This was all checked out by COLP and apparently he followed the correct procedures.
I've previously pointed out that it appears its a misconception that if one touches a surface a print is deposited:
"Firearms are perhaps among the most difficult objects to yield good latent fingerprints. According to Clemens, technicians will typically get prints on only about ten percent of the guns that are inspected".
“Why are guns so difficult? There are a number of factors involved,” said Clemens. “One of them has to do with the textured nature of the area where the gun is being held. That area is not good for prints. Another factor has to do with how the firearm was treated before the crime. If the person took good care of it, then it probably has oil on it—which makes it almost impossible to get a good print. And if they have not taken care of it, the surface might be rusty—and rust is not good for lifting prints.”
http://www.evidencemagazine.com/index.php?option=com_content&task=view&id=22http://www.lawenforcementtoday.com/2013/10/27/why-we-dont-find-fingerprints-on-firearms/Its interesting how stories have been built around the lack of prints: DS Jones interviewing JB put it to him that he wore gloves when he went out shooting bunnies on 6th. JM's testimony refers to a glove falling off when NB was beaten with the rifle. Paul Harrison's 'anonymous' letter claims JB wiped the rifle with the blue socks. Think it was AE who made much of finding Margold gloves in the fields around WHF.
We know JB handled the rifle on many occasions so the fact one print from him was on the rifle was to be expected but why was SC's print on the rifle?