Considering strap vests but need it to hold 3 big rooster pheasant or a limit of cottontail.
Don't want a cumbersome backpack style with bells and whistles.
You may wish to consider the following ....
The Orvis vest will serve fine if you are shooting at game farms mainly. Has just one zippered pocket at the back though. Shell pocket mouths are spring loaded and secure - convenient but may wear out and protrude from the edges after prolonged use (mine hasn't reached that point yet). Very well built overall. May not be comfortable for long walks with a fully laden game bag. Fine for short distance hikes.
https:// ww w. orvis.com/p/waxed-cotton-strap-vest/6y15
The next two are designed after backpacks but not bulky or cumbersome at all as those may seem from initial appearance - the trick is not to succumb to temptation and fill all the pockets with "essentials."

Both are very well built and designed for comfort. Plenty of organization. Very suitable for long hikes (15-20+ kms) in the grouse woods.
The Badlands vest is the most comfortable in every aspect. However, IMO, the magnetic ammo pockets although secure suck otherwise, particularly if you carry a compass. The shell loops between each pouch and the waist belt are useless. Too large and loose for sub gauge cartridge unless they have presently redesigned that feature. I believe even 12ga shells will fall off after some use. Looks like Badlands got rid of the useless shallow mesh pockets hugging the surface at the back of the vest.
https: // ww w.badlandsgear.com/products/upland-game-vest
The Tenzing vest is similar to the Badlands in terms of both form/function. IMHO, the shell pockets have the best design. Depending on individual physique, the waist belt may or may not fit 100% during early season.
https: // ww w.amazon.ca/Tenzing-962207-Upland-Orange-Medium/dp/B01B66YLPG
None of the above hamper in any way with fast gun mount or have "obstacles" that might scratch up the wood during movement. At least for me, all three offer great ease of one-handed reach behind into the game bag.