Questions About Bolt Locking Lug Length and Strength

[Trapaddict]

I have a model 112 Stainless long action action originally chambered for 338 Win Mag. I also have a brand new small shank barrel chambered in 300 WSM that someone turned down from a large shank barrel. The locking lugs on 300 WSM CRF actions I have seen are noticeably longer than the ones that came on the 338 WM but since SAAMI specs show that the chamber pressures for both these calibers are within 1000 PSI of one another, 338 Mag at 64,000 PSI and 300 WSM at 65,000 PSI, why in the world do you need that much more steel on the lugs? I also have a Model 12 BVSS-S that I would like to mount this barrel on and I already had someone cut down the tailpiece on a Magnum bolt head for me and I fit it to the short action bolt without issue. Is anyone out there running anything similar to these and am I worrying unnecessarily?

Thanks!

Jeff