CoElkHunter
AH ambassador
World's most popular community & resource for hunting in Africa since 2007
458-338 lapua? Anyone done this?
- Thread starter kfreeze
- Start date
kfreeze
AH member
Jefferry404
AH enthusiast
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.
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
AH enthusiast
@kreeze
if okay iwth you, thinking to start another thread on the 458/338LPM in a Ruger Hawkeye platorm
if okay iwth you, thinking to start another thread on the 458/338LPM in a Ruger Hawkeye platorm
CoElkHunter
AH ambassador
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!
Jefferry404
AH enthusiast
the OAL is just at max (Ruger mag box is at ~3.45". With Hyd 480 DGX is 3.439" and with Bar 450 TSX at
3.367". The case might need to be trimmed a hair, depending upon the length after fire forming (I used 26/1000" case shrink per the wildcat wizard).
The Ruger bolt is 0.690" diameter, so would think the 0.588" fits (CZ550 magnum has 0.700" bolt and the 0.640 case head of the 505 Gibbs fits that, abeit with little margin.
3.367". The case might need to be trimmed a hair, depending upon the length after fire forming (I used 26/1000" case shrink per the wildcat wizard).
The Ruger bolt is 0.690" diameter, so would think the 0.588" fits (CZ550 magnum has 0.700" bolt and the 0.640 case head of the 505 Gibbs fits that, abeit with little margin.
Jefferry404
AH enthusiast
kfreeze
AH member
That was my goal, but with using lapua brass being a bonus.
kfreeze
AH member
That sounds interesting too. Could always use a 300 norma mag case to shorten a little more too. I wonder how that case improved would do? And with a bullet seated out a little more.
Jefferry404
AH enthusiast
A more accurate comparison is the 458/338LPM to the 416 Ruger in that similar pressure, OAL, velocity but with a 0.458, 500gn bullet.
Jefferry404
AH enthusiast
Or a 458 winmag, same pressure and length but with a vel. of 2350!
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