You are correct this taperware stock will flex especially when you preload it on the bipod. Few tricks on YouTube and Savge shooters forum on how to strengthen Using carbon arrow shafts and like JB weld but as I mentioned above for under $150 you can get great and solid laminated wood stock. Look at Boyd's.
You will be very happy with you new rifle savage is great shooter.
tonight I recived my new 260 rem 28" bull barrel from CBI to replce my 308 win barrel no gunsmithing needed drop in. Nothing wrong with my 308 have few thousands round througt but I always want to play with 260 exlent performance to past 1500 yard using the new 140 ELD X from hornady and H4350.
Enjoy your new toy
long range shooting just like golf but for men no offence all.