I'm not a fan of the 17 Remington, as when they first came out the only round you could get was a 25-grain hollow point running at 4200 feet per second MV. They would sometimes blow apart in flight if they hit a snowflake or rain drop even tall grass or weeds. They often would tumble, and I've had them hit coyotes sideways and explode on the hide not penetrating. For fur saving I like no smaller then 55 grain bullets and the Seirra 55 grain boat tail GK running at 2900 feet per second MV, in my 223-bolt action group well, less than 1/2 MOA penetrate well into the body cavity, then open up and on red fox or jackrabbits only small fragments of copper will exit the opposite side of them, on coyote most times they expend all of their energy in the animal and the hydro shock makes them go stiff legged and tip over, never to wake up. On smaller varmints like your marmots, they will sometimes make a mess or if you have bad shot placement on any animal. If I'm just killing animals any caliber will do the job, it's a matter of how messy or how efficiently I want it done, respecting the animal's life and taking it as humanly as possible is my goal.