I dipped my toes into precision rimfire with a 457 Provarmint and a 5-25 Strike Eagle. It's been a great rifle out of the box and it shoots extremely well. The stock is very functional except the comb height is a little low, the trigger was very nice out of the box and the action on my rifle is really smooth and fast. I don't have time to shoot many matches, but I made it out to a rimfire PRS match late last summer and shot it with this rifle basically stock. I had swapped the bolt knob and added a stock pack to bump up the comb height on the stock, but those were the only changes and I didn't feel the rifle held me back at all. All my misses were squarely on me, not the rifle. I need to spend some more time on the 400 yard line with it working on data, but its pretty solid out to 300 so far. From 200 and in, it seems like it's hard to miss with this rifle.
If your budget is all in (including rings and a rail, not just optic and rifle), it kind of limits your optic choices, but I've been really pleased with my rifle, enough so that I'd drop a few features from my optic to stay with this rifle and hit the budget.
The amount of aftermarket support available for the 457 is pretty significant if you think you might eventually tinker with your rifle. Changing barrels on the 457 is ridiculously easy too.