458 Lott - 400g vs 450g monometal projectiles

[Hunter4752001]

I've been impressed with the performance of all copper projectiles for general hunting. I'm preparing for an upcoming hunt which may involve both plains game and possibly a buff. A local company makes all copper .458 projectiles in both 400g and 450g weight. Both projectiles have an excellant BC (.363 and .368 respectively). The 400g can probably be driven a bit faster than the 450g (loads still to be developed and tested).

My only question is whether a 400g all copper projectile would have enough reliable penetration for buff.

 

[Frederik]

You are not specifiying if these bullet are expanding or solids?

If solids I don't think you need a solid at all most mono expanding bullets expand and penetrate enough that an solid is obsolete.

Then I would rather stick with 450gr to the lighter 400gr as the added weight will help with penetration.

 

[John Telford]

An all copper will have the penetrating potential for Buff. Is it red copper?
I’ve used Peregrine, and Dzombo which are solid copper and the old PMP 286g solids in a .375.
It should have a flat meplat and not a round nose.

 

[John Telford]

450 or even 480 gns if you can get them.

 

[Hunter4752001]

@Frederik these are an expanding hollow point design. Somewhat similar to the Barnes TSX.

 

[Frederik]

I assume these bullets have been tested on buffalo and big animals in Australia so there is load data and performance bar being set??

 

[Hunter-Habib]

450Gr (or even 500Gr if you can find it).

 

[analog_peninsula]

Shoot a couple with each then let us know. I doubt there’s much real world difference in terminal performance, assuming identical construction.

 

[Grumpy gumpy]

They look like atomic29 pills, if so they have been tested on numerous small and large game
Gumpy

 

[Grumpy gumpy]

And I should add, atomic29 will custom make any size you want.
Gumpy