.338 Winchester Magnum or .338-06 Improved.

Which .338 cartridge would you build?


  • Total voters
    63
I agree, except one will likely always (?) be able to scrounge 30-06 brass to neck up to .338.
Try finding Weatherby .338-06 A-Square brass today. Or .338 RPM in 10 years.
Just being real.
That is why I went with a 6.5-06. 30-06, 270, and 25/06 brass can be used. Plenty of the first two around
 
I know the brass would be a bit high, but if you only hunt, and hand load, I would go with 338 RPM, it's recoil would be like the 338 WM and still right behind it! In speed on same bullet weights. And wouldn't be a big difference on recoil to the 30-06.
 
I'm running a standard Whelen with a 225 Accubond at 3030. Long action Remington, seated way out to 3.53" under light compression with a case full of CFE223. Very good accuracy. Primer pockets tight after 10 firings.
I also run a 35 Whelen with 200 TTSX at 2950 seated way out, can do that due to the long throat SAAMI spec, with 60 gr XBR. Primer pockets tight after 5 firings. It will shoot 3/4" all day long. I chose that over the 338. It will kill anything in NA out to 500yrds +. And worse case, I can find underpowered factory ammo on the shelf fairly easy.
 
I'm running a standard Whelen with a 225 Accubond at 3030. Long action Remington, seated way out to 3.53" under light compression with a case full of CFE223. Very good accuracy. Primer pockets tight after 10 firings.
What kind of brass are you using for your 35 whelen?
 
Depending what you are using it for...my father in law owns a 338-06 rifle and it is pretty nice. I own a 338 Win Mag Ruger M77 All Weather and it is one of my top 3 favourite rifles. 45-70, 7mm WBY and my 338. The 338 has more horsepower but if you'd a little more recoil shy, the 338-06 might be your choice. It's easy to find ammo for the 338 and it is a fun round to shoot. Stick a good recoil pad like a limbsaver nitro and you're good to go.
Put a muzzle brake on it. Makes a lot of differences. I use to shoot my friends Ruger Mark 11 in a 338WM chamber. It kicked🤣! Later he offer it to me and I purchased it. Sat in the gunsafe for years. Got a muzzle brake on it, and now it's my go to rifle for big game. We develop a load for it using a 200gr Nos BT with 75.5 grs of W760. No you won't find that in a manual either. It groups like no toworrow. 5 @ 100yds under 1/2" at that time. I haven't recross that bridge yet to recheck the velocity, but going to.
 
Absolutely......NEITHER !!! Especially if I already had everything I needed....either way.....NEITHER.....just me

Then why not go with a real .338... Lapua or Rum because the 338-06 SUCKS
Way back when I was young, gun writers extolled the virtues of the .333OKH saying it hit like the "Hammer of Thor"! They talked about how it was such a great elk, moose & grizzly cartridge and the 338-06 is essentially a 333OKH except that one was .333 diameter bullets and the other uses .338 diameter bullets. Since both are based on the same 30-06 cartridge, no game animal will be able to tell the difference! If you still think the 338-06 SUCKS, you're probably too young to have read those articles!
 
Way back when I was young, gun writers extolled the virtues of the .333OKH saying it hit like the "Hammer of Thor"! They talked about how it was such a great elk, moose & grizzly cartridge and the 338-06 is essentially a 333OKH except that one was .333 diameter bullets and the other uses .338 diameter bullets. Since both are based on the same 30-06 cartridge, no game animal will be able to tell the difference! If you still think the 338-06 SUCKS, you're probably too young to have read those articles!

While I prefer my 338WM's, I do have to admit my witnessed effectiveness of the 338-06, at least in my brother's hands. Typically, he pushed 180's around the 3,000fps mark for deer and similar, and there was no arguing on how well it put game down. Switching to the 210's, and within reasonable distances, elk and other showed no real difference between his shots and my 338WM. Stretch it out a little farther or up the bullet weights to 225 or more, and sure, the 338WM ruled the day.

Thus, I couldn't say the 338-06 sucks, for like all calibers/cartridges, it works within its parameters. More or less so for some.
 
I have had both, I sold my 338WM. I shoot my 338-06. With factory 185g CX in the 338WM the 338-06(handload) was 200fps slower with a 4 inch shorter barrel. I have Weatherby brass for it...still virgin as I use 30-06 brass all the time. 160's@3060, 200g Trophy Coppers are over 2800.
 
To give a little more data, 200gr TBT's from my RPM, 20in barrel run 2900fps, 230ELDX at 2700fps.
From my WM, with the same bullets I get 2915 and 2730 respectively, same barrel length. So not a lot of distance between the two.
Right up against max pressure for all of those loads.
But also to give some idea of how much/little you gain over the -06 with similar bullets from other people's data.
 
The 35 Whelen SUCKS!

I have pretty much all the big .30's covered.
We have a bunch of 35 Whelens, what makes them suck in your opinion? Depending upon the application the .35 Whelen is a formidable cartridge. I consider the Whelen to be a 300 yard cartridge, after that the cartridge turns into a mortar round in my opinion. It loses a lot of horsepower after 300 yards.

If I had to make a choice between the .338 WinMag or the .338-06 AI, I wouldn't take the .338-06 AI hands down for me. The .338 WinMag for me has too much recoil. I once swapped out my 30-06 for a .338 WinMag for a bear hunt. I put three rounds through the .338 WinMag and asked to get my 30-06 back.
 
Good to know. What didn't you like about it ?
It may keep me from going down the wrong rabbit hole.
We have three .35 Whelens that we hunt with, all three are rebores from JES. I wrote another reply in this thread where I consider the .35 Whelen to be a 300 yard cartridge because after that the cartridge turns into a mortar round. If you are looking to get a better selection for high BC bullets then the .338-06 is a better choice in my opinion. I can hit 12 inch steel plates at 300 yards with authority all day long with the Whelen. What is the particular application that you intend to use the .35 Whelen? If I want to shoot distance I have a .270 AI , or a 30-06 out to 500 yards. After 500 yards I do not want to chance an unethical shot, plus I probably cannot walk that far to begin with.
 
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