Everything about it. Every 700 pattern actions Achilles heel is the trigger and the way the sear works.
There is no 700 trigger that gets around this. The are two main issues:
1). Drop safe. There are no triggers for a 700 that passes one of the military’s drop requirements. None. The Geissele two stage is the “best”, but it still goes bang when it shouldn’t.
2). Reliability in adverse weather, primarily sleet, ice, snow, and sand. They freeze up in wet, freezing weather more than any other mainline trigger system. Same for dust and sand. That is all of them. Trigger Techs are not immune in any way. As an anecdote- the last time I used a Remington patterned action hunting it locked up- both the trigger and the action, and it is a Trigger Tech.
It’s literally the worst mainline trigger system, and other than laziness and pure ignorance it’s baffling why even good companies/people use them (such as ARC). They are akin to some scopes- it’s laughably easy and simple to show anyone that they fail.
Reliability of most “custom” R700 actions is garbage.
1). Most suffer from poor primary extraction, ejection and compromised feeding (ARC notable exception)
2). Almost all bind when racking quickly.
3). Most suffer feed/function issues in sand and ice.
Before anyone wants to jump in and say “but my ______ has never failed” nonsense, ok sweet. Your granddad smoked three packs a day and lived to 99- that does not mean that when seen in large numbers that the vast majority of people won’t die of lung cancer early from cigarettes.
These companies “making” these actions/triggers/rifles did not test them for feed and function in adverse weather. APR did not conduct actual testing when designing the Maverick in snow, ice, sand, mud, etc. They produced another copy of a subpar design because the market buys it.
The only thing you get when buying a “custom”, and it’s in quotes because R700 customs are just screwed together now; is saying you have a “custom”. In comparison to other rifles, it’s a subpar action system, subpar triggers, and unless it has an integral rail- a subpar mounting system. Yes, I’ve owned and used most of the custom actions and rifles. A lot.
Now, let’s contrast that with some other rifles mentioned here.
The Scandinavian companies and most European companies actually do conduct legitimate testing and validation for feed, function, and precision during design of their rifles. A Tikka T3 was literally designed to feed smoothly and reliably in deep winter, snow and ice conditions. Ditto for Sako’s. And Sauers. And Blasers.
With a Tikka directly compared to any of the “custom” 700 actions or rifles you get-
1). One of the best actions for reliability, durability, and function is bad conditions.
2). An anti bind bolt, extremely smooth feeding with singe stack, single feed polymer mags that work extremely well in snow and ice.
3). One of the most reliable triggers systems on the market, that breaks and feels like most aftermarket triggers, and is adjustable to 2.2-2.5lbs without modification.
4). Very good barrels that are properly stress relieved and consistent. Having seen hundreds of “custom” barrels shot, there is a very small, to no notice difference on average between lightweight custom barrels and factory Sako/Tikka barrels. A number 1 or 2 contour barrel will average around 1 moa for multiple ten round groups for both. Same for Sauer, Blaser, etc.
3). Not a carbon fiber stock, however one of the stiffest if not the stiffest polymer stocks on a factory gun. This is easily seen by going to a gun store, grabbing rifles by just the forend and torquing to see it move.
The cons of the T3x, which don’t apply to the OP’s use are limited magazine COAL for magnums, and twist rate for the longest bullets available for 7mm and 30cals. However, this is way overblown. An 11” twist 30cal will stabilize 208gr ELD-M’s without issue.
One can kill animals with about anything. Yet objectively: stock Sako/Tikka, Sauer, and Blasers are better in every way in feed, function, and feel (except for a couple notable exceptions) than all “custom” R700 based actions and rifles. You’re getting duped into “better” when they are not.