What do I buy?

Whichever one has the most readily available ammo and components. Kinda splitting hairs between those choices. If all are readily available pick the rifle that suits you best.
 
I'd look to buy a very lightweight .308 rifle, makes for easy carrying.
 
500 Jeffery
Was it Elmer Keith who once said, "the 375 H&H makes a nice little deer rifle"...so you would be moving it to medium bore and 500 Jeff to the biggie!
 
A 286 gr 9.3 bullet fired at 2450 will have a near identical ballistic arc as a 180 gr 308 Win. That'll easily get you to 300 yards with very little to no holdover adjustment on larger species like gemsbok and wildebeest and still pack quite a thump when it gets there. Hornady SPRP is a great bullet for that kind of shooting.

If you measure the chamber on just about any 9.3x62, you'll find the SAAMI spec COAL of 3.291" laughable. You'll likely find you can go to 3.32 or even 3.34'.

Not familiar with somchem powders, but I'm sure they have one similar to big game or 2000MR, where 62 - 64 gr of powder will get you 2400-2500 fps with no pressure signs. That's 375 energy in a standard size rifle
 
.300 win mag. It is well above the .25/06 and not too much below the .375. And ammo is common. And suppressors will be easier to come by.

I love the 9.3x62, it is traveling with me to Namibia in 2 weeks. But it is so close to your .375 that a flat shooting .300wm makes more sense to me.

The real deciding factor will be a rifle that comes available and happens to be in one of the calibers that you like.

Final thought: If you put the best scope on it (in relation to your other rifles) you will normally pick up the rifle with the best glass for hunting.
 
If you want to put a suppressor on it, I would stay at .30 caliber or smaller just because the can gets so big and heavy over that. So why not go back to the venerable 30-06? Or a 308 if you wish but the 30-06 is so much more flexible and so close to a magnum.

This makes the most sense to me for a few reasons, particularly if you go with the .30-06. A bit more killing power than the .25-06 and 7x57 to start with. I'm not sure what the 9.3's or .338 offers you that the 375 Ruger does not cover. And I would NOT sell the 375 Ruger if DG hunting is on your horizon. You'll be legal anywhere you go with that caliber.

With the ability to handle 180gr or 200gr projectiles, the .30-06 seems the best choice given your list. If I were could add another consideration it would be the .300WM.
 
8x68 does best with a longer barrel.
Adding a suppressor will make it unwieldy for carrying.
9.3x62 does well with a shorter barrel.
30-06 with a 22” barrel will always be a good choice in Namibia.
Ammo is available from Keetmans to Katima.
 

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Grz63 wrote on Werty's profile.
(cont'd)
Rockies museum,
CM Russel museum and lewis and Clark interpretative center
Horseback riding in Summer star ranch
Charlo bison range and Garnet ghost town
Flathead lake, road to the sun and hiking in Glacier NP
and back to SLC (via Ogden and Logan)
Grz63 wrote on Werty's profile.
Good Morning,
I plan to visit MT next Sept.
May I ask you to give me your comments; do I forget something ? are my choices worthy ? Thank you in advance
Philippe (France)

Start in Billings, Then visit little big horn battlefield,
MT grizzly encounter,
a hot springs (do you have good spots ?)
Looking to buy a 375 H&H or .416 Rem Mag if anyone has anything they want to let go of
Erling Søvik wrote on dankykang's profile.
Nice Z, 1975 ?
Tintin wrote on JNevada's profile.
Hi Jay,

Hope you're well.

I'm headed your way in January.

Attending SHOT Show has been a long time bucket list item for me.

Finally made it happen and I'm headed to Vegas.

I know you're some distance from Vegas - but would be keen to catch up if it works out.

Have a good one.

Mark
 
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