Hard to beat the tikka. (Fighting words on this forum)😂 they did start making the 300 win mag in 1:10 twist. But I have not seen the 300wsm in it yet.
I’ll have a look at that calculator.
Could be, also there’s a lot of recoil to contend with. I found them frustrating to work with. Best three shot group was one hole group and most of the time I would be able to keep it to 1-1/4” but when the group opens up to over 3” something is off. Cleaning the barrel would fix it.
Maybe time...
Just from my own observation. Hornady does recommend 1:10, but I developed a load regardless. And it did indeed work but after a bit of barrel fouling I started getting fliers. Come to learn that a friend of mine had the same problem his would also only work on a newly cleaned barrel. Mine being...
Tikka t3 300wsm (work up your loads very carefully)
178eldx h4350 2950 just about full mag length very accurate (my go to)
200grain eldx h4350 2900fps full mag length very accurate but required a very clean barrel with a couple of fouling shots. 200 grains were marginal stabilized in the 1:11...