What you have looks to me to be Military ball (FMJ) ammo (In your case manufactured by Kynoch (Spelling?) in England in 1967) that was modified to sporting, soft point ammo. This was usually done by simply trimming the nose from the copper jacket and reshaping the tip.
As for worth, not worth all that much, Berden primed means reloading is a no go, more then likely corrosive, and these reshaped projectiles tended to have a problem. Which is, the FMJ projectiles tend to have an exposed lead base, so by cutting the tip off of the jacket you basically have a lead filled copper tube. Some people have reported that the lead sometimes can melt out leaving quite a bit of lead and copper in the bore, which is bad.
You probably could shoot it off without incident, as The issue i described above is rare, but don't expect it to group very well, or perform well as a hunting round. Although better to just hang onto it for interest purposes, at least thats what I would do.