I wish the 300 WSM would get it's relaunch (300 PRC 2?) Every caliber got remade but the 30 cal...

[doverpack12]

I’m using 65.5gr of H4350 with ADG brass and fed 210Ms. Mine is throated long and converted to long action.View attachment 1043079

That’s about where I am. Maybe a grain less powder. It wanted to shoot where I’m at but I ran a ladder quite a bit higher.

I’m a long action bolt stop and HCA mag user as well. No throat modification on mine

 

[streamerfish]

You can shoot 180's at 3,000fps in a 300WSM and 300SAUM in a short action.

You don't need a updated twist rate to shoot 180's.

Realistically, your not going to get any real improvement on those in a short action for a .30cal. It takes powder capacity to move big bullets. The 300 SAUM real world is dang near a creedmoor case, dimensionally very close, but a bit fatter. Your not gonna squeeze anything more out of a short action case....especially a standard bolt face, short action.

This is the same reason why their isn't a 7mm creedmoor. The case capacity just isn't there to push the big bullets.

Hornady actually talked about it in one of their podcasts. 7mm and 30 cal got the PRC case because the short action (creedmoor) case just wasn't gonna bring the goods for the heavy for caliber bullets.

 

[nm.otter]

Mine is throated long and converted to long action.

...pretty much the Super WSM recipe (plus a faster twist barrel).

 

[Aussie Dan]

Search up thr 300 super wsm projects on the vortex nation podcast.
Basically running a 300wsm in a medium/long action, 1/8 twist barrel and 200+ grain projectiles.

To "update it" the ammo manufacturers would probably have to re-do the Sammi spec before the gun manufacturers got on board and they probably couldn't do that simply because some people can't be trusted not to mess up and try to use the up spec version of factory ammo In the "old spec" rifles.
**think 6 arc factory ammo being downloaded to suit AR pressures despite a decent bolt gun market.

Your best bet if youre really keen might be to find a bunch of 300wsm lapua brass- several barrels worth, then do a custom build, get a couple barrels chambered at the same time.
It's a substantial investment for maybe not a lot of gain over something else that has factory ammo support and likely to have tons of components available long term.

**It seems that a lot of people are shying away from heavy hitting 30 cal magnums and maybe the market can't support that

 

[Dark timber]

...pretty much the Super WSM recipe (plus a faster twist barrel).

The cartridge really shines in this configuration. As far as the super wsm, I think it’s actually a Saami chamber. I could be wrong though. I just know I don’t really want anything to do with Barnes lol

 

[nm.otter]

Correct -- SAAMI chamber, faster twist, long action. Not particularly difficult on a T3x.

 

[Geewhiz]

My factory tikka 300wsm has a 10 twist and is throated long enough to seat a berger 215 at 3.25 coal. I chopped it to 20" and am planning on shooting the 215s but I haven't actually done any load development yet.

 

[MallardSX2]

Love my 300 WSM. I wouldn’t change it.