Thank you CanuckCooper for starting this thread!
Thanks to this thread I have become very interested in the rimfire "Sporting Rifle" and "Hunting Rifle" disciplines. Unfortunately there are no organizations or competitions for these two disciplines anywhere near where I live, so my interest is currently theoretical, studying for maybe starting a club here one day. (My club here only has Benchrest discipline).
Up until now, I did not know the technical differences between rimfire "Target" and "Sporting" rifles. I skimmed through the SFC "Sporting Rifle Rules and Hunting Rifle Rules" linked on the SFC website. I think I now know the key differences, such as limits on trigger pull weight, rifle weight, stock features, hand stops and rails, etc.
A few years ago I purchased my first competition grade rimfire, the Anschutz 1907, with the benchrest wedge for the forearm, and a 45x45 BR scope. My intention was: (1) to be able to compete with the best of the benchrest shooters in my club, most of which had Anschutz rifles, and (2) to later, with aperture sights, practice 3 position "target" rifle on my own for maybe one day in retirement, doing long road trips to far away places to compete. I did not know about the discipline of "Sporting Rifle". (I also discovered online "Silhouette Rifle" which looks like alot of fun, but again no range anywhere near where I live that provides it).
After reading the SFC rules, I now know that my 1907 is not legal for Sporting Rifle for several specs's (trigger pull, stock, maybe weight but I have not weighed it).
Re CC's statement about rifles which are legal for Sporting, I had a question:
.... There’s only one Anschutz that meets the weight requirements out of the factory for this sport as it stands and that’s the 1903kk junior. Don’t let the word junior lead you to believe the rifle would be small. I’m 5 foot 9 and 215lb, and it fits perfect with adjustment to spare. It’s more the weight on that Anschutz that’s different from its bigger brothers. It’s lighter by 2 plus kilos (shorter barrel and lighter stock).
I looked at the rifles listed under "Rimfire" on Nordic Marksman's website, and I noticed that several models of Anschutz 1710, 1761 and 1416 come in a "heavy trigger" option set at 1000g at the factory, and adjustable to 1100g or 1200g, depending on model. I was wondering if these models are legal for "Sporting Rifle"?
My current budget will not allow me to purchase another rimfire to meet the "Sporting" rules. But I do own two CZ Lux rifles that I am wondering if I could use for Sporting, and Hunting disciplines. The critical problem with these CZ's is the lack of a globe front sight dovetail mount. (They have the 11mm dovetail on the receiver for a rear aperture sight mount).
My CZ 452 Lux has a soldered on front sight ramp, and it would need major gunsmithing to convert it to be able mount a globe front sight. I do not want to destroy the factory front sight. The old BRNO globe mounts that fit into the sight post groove where the sliding sight post is, are now unobtanium, to my knowledge. What I need is an adapter to securely fasten over the ramp that has a dovetail on top for a globe sight mount, but I have not found such a thing that is available.
Below is a photo of my CZ 452 Lux front sight with the hood and front sight post removed. I need an adapter to clamp onto this to provide a dovetail mount for a globe sight.
My CZ 455 Lux front sight ramp looks a little different than the 452, and has a removable screw for attaching/detaching the entire front sight assembly, but I don't know what replacement part is available to mount a standard inline dovetail on it for a modern globe sight mount. I have seen in catalogues the ramps with the 3/8" crossways dovetail for sight posts and the older globe designs with that dovetail (Lyman still makes them for the steel aperture inserts).
Anyways, I sure could use some advice for how to mount a front globe sight onto the 452 and 455 Lux CZ's. My preference would be for the 452 because it has the longer 24 inch barrel.