I was near to being rid of this rifle, I have had this now for a long while, and really dont get to use it more than a few hundred rounds a year, but I upgraded the stock some time ago, to a GRS (to which many now) and was finding it hard to get a bolt handle upgrade, which for a 527 and others alike is quite easy, so we went to work and did the following.
The bolt handle has a hole in it, from manufacture, and we threaded that to insert a stud of a very tight fit.
Then after getting the correct angle we made an Ali extension to which was knurled and threaded to place on the Stud, and tight to the profile of the original ball.
Fitting the handle to the bolt was easy, then placed a locking pin in it after seeing if its in the right place, so as it does not turn off unwanted. Painted it black, as good as could be to match.
The finished job was great, the room below the handle was fine, and the handle distance from the scope was just right.
Attachment 47669Attachment 47670Attachment 47671Attachment 47672
The advantage is it can always be removed without serious damage to the original Bolt Handle, and the rifle lives on!