WHEELY NEAT FIX
I have just read your reader’s letter, Where There’s a Wheel. I had exactly the same problem when I fitted the sidewheel of my Nikko Stirling Diamond 6-24 x 50 to my Air Arms S410. Firstly, I cut out a section of the wheel with a hacksaw and then filed off the burr, and rounded the edges. The magazine fitted in easily.
The main problem now was that the wheel could not rotate because it was too wide and struck the magazine; the wheel was 12mm wide and I needed it to be 9mm so that the wheel had clearance to rotate.
I measured 9.5mm and used masking tape as a guide, and then out came the angle grinder. I put the wheel into the wooden jaws of my WorkMate and by using the side face of the angle grinder, I ground off the excess aluminium, moving the wheel in the jaws so that I was left with 9.5mm of rough metal .
The next stage was filing the last .5mm by hand, de-burring and smoothing out, using my digital vernier to ensure a uniform 9mm wheel thickness.After a successful test fit, I degreased the wheel and used Halford’s grey primer and matte black on it. It now works perfectly.
I have ordered a sidewheel for my MTC Cobra FFP scope that is on my Ultimate Sporter. No doubt, I shall have to modify that as well. JULIAN WEBB
Great job, Julian, and very professionally done. Thanks for letting us know. – Ed
Julian Webb knows how to overcome sidewheel access problems – and how.