You could look at getting Tikka T1x's, which is pretty much just a .22lr of that rifle but it has no iron sights. But you can use full size T3 stocks so it would handle similarly.
+1 for the Tikka T1X MTR, it's a great rifle and has the same footprint as the Tikka T3 (which I believe is the same as the C-19) if a bit pricey. Using .177 pellet rifles at 10m is another really great option, plus it can be shot indoors all year round.
I'd also echo the above comments made by Chanrobi though, marksmanship training should be done by practicing fundamentals, equipment used makes no difference. The basics are the basics after all.
I see guys show up to matches all the time with 5k+ wonderguns and it doesn't make a hoot of difference if they have no fundamental practice or training. The old saying that "practice makes perfect" really is true. That and "volume breeds accuracy"....you can't learn to shoot without shooting
- Position and support of the firearm
- Natural Alignment of the body
- Aim and correct sight alignment
- Shot and consistent follow through
- Breathing, develop proper breathing and control
I'm currently heading up the RCAF marksmanship training program, having attended CAFSAC for the past 6 years alongside many of your fellow Rangers who, quite frankly, never cease to impress upon me how good you guys are with open sights. I'm just in the process of standing up a precision rimfire training program as part of our prep for CAFSAC 2022, if you're interested in being part of this pilot program please PM me for more details, I'd be happy to include you guys/gals!
~ Teller