458-338 lapua? Anyone done this?

[CoElkHunter]

To clarify, the B&Ms are improved and constructed using RUM brass, not WSM. Not to derail the OPs thread.

You're right. My mistake. The B&Ms are designed to be used in a Winchester M70 .300WSM action but use the RUM cases.

 

[kfreeze]

To clarify, the B&Ms are improved and constructed using RUM brass, not WSM. Not to derail the OPs thread.

I was thinking of stuff off of an 300 ultra case too. Mostly 416 or 375 is what I had pondered. But I really want something in .458 for some reason.

 

[jwp475]

Isn't the 450 Rigby the 338 Laupa necked to .458

 

[Jefferry404]

The Rigby case is 170/1000” longer and psi rating
Is 15% lower. It’s OAL is 3.75 vs the 458/338 would be at 3.429, I guess trying to get rigby performance in a shorter package.

 

[Jefferry404]

@kreeze
if okay iwth you, thinking to start another thread on the 458/338LPM in a Ruger Hawkeye platorm

 

[CoElkHunter]

@kreeze
if okay iwth you, thinking to start another thread on the 458/338LPM in a Ruger Hawkeye platorm

Would the OAL 3.429 fit into the long action Hawkeye platform? And, can the .532 bolt face be opened up to the .588 of the Lapua case? Thanks!