Cabela's Tactical Gun Case works just fine for my 102. Both the main zipper and the external side pockets can be secured with a small lock. At 42"L on the inside, the 102 just fits with the stock fully collapsed.
BTW I have an 18.6 barrel with an
M4-72 Tactical Compensator.
I also have a
Vault Double Rifle Case which is nice for two rifles, however, the Vault series of cases are not up to the standard Pelican specs, which is reflected in the lower price.
The V800 specs, length and wide, are a good guide for the Stag as well. Interior: 53" × 16" × 6" which is plenty for a Troy/102 with a fixed stock.
I also have an
SKB I Series 4217 Mil-SPEC Double Bow / Rifle Case for my shorter Tactical rifles.
This is also a double rifle case for transporting two rifles. However, at only 40" in length, it is almost too short, unless you are willing to break down your .308, which I would do for flights with the rifle.
Build quality goes from Pelican (Great) SKB (very good) to Vault, which is just ok, IMHO.
However, the Vault is a much better build quality than anything from Canada Tire. Flambeau, Plano, Huntshield, etc.
I also have both Robinson Arms and CPD (C Products Defense) XCR-M 10 round, 308 WIN Pistol Magazines which work just fine.
As for a BiPod, I have a couple of
FAB Defense Tactical Rotating Bipod & Foregrip T-POD G2s. They are a little heavy, but I like the functionality of having both a forward grip and bipod. I was able to pick up both at a good price, and they can be quickly removed as needed.
Magpul's new bipods are also getting good reviews if you are looking for just a bipod.