First let's establish the settings we are using. The way I typically play is EVERYTHING vanilla when it comes to experience a new build.
On Vanilla settings I hit loot cap on day 4 in a tier 5 POI. Why anyone would stay after is silly.
What day were you on when you did?
How did you possibly get that many magazines in a legit vanilla manner?
(For melee weapons/tools all T3 Q6) you would have to loots several hundreds possible magazine drops. You might get the magazine you want MAX 25% of the time and you'd need 75 magazines for your melee weapon and 100 for your tools. (at an incredibly LUCKY 25% that's 700 magazines!) There isn't even CLOSE to that many lootable containers with magazines drops in the entire forest biome. There might be a generous 400 total POIs in the forest max on many cities and 10k map. You'd have to wait for loot to respawn over and over again which next to no one is going to do.
I hate to say it, but I simply don't buy it. This isn't something you are going to be doing on Vanilla settings. If you are going to get T3 Lvl 6 weapons you would have to spend multiple loot respawns in the forest. I am guessing at least till day 21+ in the forest, because you need all that loot to respawn multiple times.
If you turn loot respawn to daily, sure go for it, but otherwise If you want grind for WEEKS in the forest, then ya you can, but no one is going to grind â– â– â– â– ty loot tables when they maxed them out weeks ago in game. Once they have already looted every mailbox/newspaper stand in the forest people move on for the most part. lol There simply aren't enough POI with possible magazine drops in the forest to do it any other way.
Bottom line is most people aren't going to stay in the forest passed week 1. I was out day 4 because I was already maxing out loot stage/tables in high tier POI. To say this is fine because you might do something maybe 5% of players might do is rather silly.
Basically vanilla except for 2 hour days, currently on day 18. Like I said, I have the biome badges up to snow, which raises the loot cap in the previous biomes. I was maxing out the loot cap earlier, but now that I've gotten the badges, I'm not.
I did accidentally leave loot respawn on the default, but I've only relooted maybe half a dozen containers (not really on purpose, just happened to walk into a house I'd previously looted and was surprised to find the loot had respawned. I haven't even come close to looting everything in the forest, most of one town, and a couple POIs in another. I do take crafting skill magazines whenever possible from quest rewards, and buy magazines that are useful to me when I see them. I also eventually took the Int perk for more magazines/double progression.
Regardless, I've got up to T5 POIs in the forest, and most of the time I've played there wasn't any loot stage bonus in the other biomes, so why would I bother to spend much time in them? Burnt is ugly, Desert has annoying plague spitters, I was going to move to the snow but decided I'd just wait and move to the Wasteland instead.
Anyway, like I said, I don't think Dire Wolves spawning in the wilderness in the forest is fine. I think they shouldn't. But I don't mind them spawning in higher tier POIs in the forest. Heck, when I did the T5 pictured below, I had 2 infernal (whatever the orange ones are called) Frostclaws spawn, that had as much hp as a Dire Wolf, so I don't see why Dire Wolves shouldn't spawn in such a POI.
Note that there is nerd armor and the new perk that can get you more than one point per magazine read. Also, which magazines you find is also determined by where you look and how your perks are spent, so trying to estimate a percentage of how many magazines will be specific ones is very difficult as many things factor into it. Putting all your perk points in the beginning into your weapon could get you a far higher percentage of that weapon's magazines than 25%, for example. I can see getting enough to reach T3 Q6 in the forest, if there are around 4 forest towns, which isn't unusual to have on an RWG map. As far as how they played (maybe doing a lot of questing that could provide a lot of magazines, especially with a Crack-A-Book), I have no idea, of course. Also, they did mention having been in other biomes, and some magazines likely came from those biomes.
Well, I've gotten to the point of having T5 quests, so yeah, I've done a decent amount of questing. I also loot absolutely everything. Did 1 Crack-A-Book, 1 City Daycare and most of a Mo Power (I ran out of inventory space) in the desert. But that certainly wasn't the bulk of the magazines I've gotten.
Anyway, this is what my crafting skills look like

Here's my loot stage in a T5 POI in the forest. Not capped.
