Merits of 7mm Rem Mag Vs 338 Win Mag for long range Elk/Moose/Bear cartridge?

pathfinder76 said:
Are we comparing 18” 7 magnums to 28” ackley’s? Lol.
Click to expand...

Likely. Couple that with the "just put more powder in" type of reloads. Etc. It's simple case capacity. All else being equal (barrel length, pressures, etc), bigger case will produce more velocity. Physics are physics (with a little chemistry thrown in). - dan
 
Remember all the articles when the WSM's came out about how the short, fat case was more efficient and got higher velocities?
 
MiG25 said:
Remember all the articles when the WSM's came out about how the short, fat case was more efficient and got higher velocities?
Click to expand...
A coworker tried to tell me his 300 wsm was in fact ballistically superior to a 300 win mag. A physics impossibility. You can arguably say it is more efficient but not superior.
 
Mike Webb said:
A coworker tried to tell me his 300 wsm was in fact ballistically superior to a 300 win mag. A physics impossibility. You can arguably say it is more efficient but not superior.
Click to expand...

Due to diminishing returns, the 22 BB and CB are the most efficient cartridges in existence.

If ten grains of powder breaks the Bank in a hunting rifle one should make themselves a bow and arrow.
 
MiG25 said:
Remember all the articles when the WSM's came out about how the short, fat case was more efficient and got higher velocities?
Click to expand...

Yes I do
and the fact is the 300 wsm factory load was a Winchester special blend of powders . No reloader at the time could match it .
the less recoil is subjective
All of you know that certain powders will obtain higher velocities than others , of course
Factory loadings have come a long ways and if you have never tried them in the last 15 years or so how would you know
Reloading rooms now are sometimes where you go to "match" factory for hunting purposes
All things equal , yes more powder ( of what kind) means more vel in the right barrel
Try some Norma or Sako
 
Last edited:
Seems that the easy answer to 338wm vs 7rm is recoil tolerance.
If you can shoot a 338 win mag well, then that's the better one to take. I don't subscribe to the "too much gun" myth.
Most people top out around the 30-06/7RM for recoil tolerance, so for alot of people the 30-06 or 7 is the better tool. If you cant shoot it well you shouldn't hunt with it IMO.
 
The factory loadings for a 1962, and 1958 cartridge are going to be conservative compared to rifles for a cartridge from about 2005. Old rifles, customs often made with even older actions.

The 300wsm is really close to 308nm. I can get the 308nm to the bottom of 300wm factory ammo performance with handloads. I'm not much of a drop tube and put the loading block on a running jigsaw guy. I find a accurate load, if more performance is needed use a different rifle. Really though comparing max handloads to bargain factory ammo from a more powerful cartridge? Apples and oranges.

Back to original posted question. Either rifle caliber is fine. The 7mag for deer option elk, moose; 338wm for larger....option deer.
 
I agree ,
the 7RM is good for all but the 338 is just bigger and with more thump, if a shoulder off shot is needed .
Also keep in mind is where hunting .
If you need to drop on the spot, 338 WM , has more of a chance
Its all about recoil and if you can shoot it
 
Spruster said:
Yes I do
and the fact is the 300 wsm factory load was a Winchester special blend of powders . No reloader at the time could match it .
the less recoil is subjective
All of you know that certain powders will obtain higher velocities than others , of course
Factory loadings have come a long ways and if you have never tried them in the last 15 years or so how would you know
Reloading rooms now are sometimes where you go to "match" factory for hunting purposes
All things equal , yes more powder ( of what kind) means more vel in the right barrel
Try some Norma or Sako
Click to expand...

Thing with those magic modern new powders is that they can use them in the larger case as well, and the velocity differential will still be there. So it goes.- dan
 
nowarningshot said:
The factory loadings for a 1962, and 1958 cartridge are going to be conservative compared to rifles for a cartridge from about 2005. Old rifles, customs often made with even older actions.

The 300wsm is really close to 308nm. I can get the 308nm to the bottom of 300wm factory ammo performance with handloads. I'm not much of a drop tube and put the loading block on a running jigsaw guy. I find a accurate load, if more performance is needed use a different rifle. Really though comparing max handloads to bargain factory ammo from a more powerful cartridge? Apples and oranges.

Back to original posted question. Either rifle caliber is fine. The 7mag for deer option elk, moose; 338wm for larger....option deer.
Click to expand...

300 wms is more a 300hh but without the panache ...
 
nowarningshot said:
The factory loadings for a 1962, and 1958 cartridge are going to be conservative compared to rifles for a cartridge from about 2005. Old rifles, customs often made with even older actions.

The 300wsm is really close to 308nm. I can get the 308nm to the bottom of 300wm factory ammo performance with handloads. I'm not much of a drop tube and put the loading block on a running jigsaw guy. I find a accurate load, if more performance is needed use a different rifle. Really though comparing max handloads to bargain factory ammo from a more powerful cartridge? Apples and oranges.

Back to original posted question. Either rifle caliber is fine. The 7mag for deer option elk, moose; 338wm for larger....option deer.
Click to expand...

My 308 norma was getting 3300fps with 76 grains of imr4831 and 165 grain bullets.
 
You must log in or register to reply here.
Back
Top Bottom