Sirri, the short answer is no, it can't be changed. There are two problems. First your 17HMR is a rimfire, probably made in Canada. The Target AccuTrigger is only offered to my knowledge on the centerfire Savages made in the USA. While they both use the same principle of the center safety blade, the triggers are actually different in overall design. Not interchangeable. Also, I hear Savage will not sell them (only replace them if you send the gun in).
The second problem is that the centerfire AccuTrigger is not really different than the standard AccuTrigger on the centerfires. It is just tuned better, and I suspect has lighter springs.
The good news is that if you are reasonably handy you can tune your rimfire AccuTrigger to give less than 1 lb pull, and with care 10-12 oz. may be possible. Here is how I got mine down to about that level.
Savage Rimfire AccuTrigger Tuning