ORIGINAL: mossy33oak
ORIGINAL: nksmfamjp
I don't really like the 7mm mag because it gives up some killing power to the 30'06 due to bullet diameter,
ahhh the old internet folk lore, gotta love it!
Let me presume we are all trying to get along and learn from one another. I said the 30'06 can have more killing power due to it's diameter. Yes thatt is true and many "stopping power" or "killing power" theorists have tried to show it's impact in the formula's. Now even I will agree that those formulas and ratings are all kind of supbjective. Frankly, WE, all of us, including you, don't totally know what equals stopping power and what equals killing power. Here are my reasons for bullet diameter:
1) If 2 bullets of equalconstruction, weightand velocity hit the same spot on the same animal, the larger diameter bullet slows down moreand expends more energy getting through the animal. Energy expended is creating the wound channel. Energy expended = shock(the quick stopper)This is why dangerous game rifles start at 458 caliber and go up to 600+. Velocity out the back is only a liability. It is no benefit.
2) Animals seem to bleed more out the exit hole in my experience. For a given weight and construction, larger diameter = larger hole. Larger hole = more tissue damage and quicker bleed out.
3) For a given bullet weightand case size, the larger the caliber the more velocity. For example- 150gr 30/284(30'06 equivalent) load, velocity = ~3040fps. For a 284 150gr load, velocity = ~2890fps. For a 6.5x284 150gr load, velocity = ~2680fps. See the trend. Study it yourself, don't take my word for it.
So, I will give you that the 7mm Rem mag and 30'06 are very close in killing performance, but can we agree the 30'06 has the advantage, even if it is so small that it ddoesn't matter all that much?
Now for why to get the 30'06:
1) Ammo available in Two Dot, MT factor. 30'06 ammo is available everywhere.
2) Generally,30'06 bullets will not blow up, even cheap ammo. Remember, need that exit hole.
3) 30'06 usually gives you a one round mag capacity advantage. I used to laugh athis, but now that I'm down to 2 in my 300 WSM, I wonder why it isn't a single shot!
4) Ammo is cheap infinate variations are available from 55gr to 220gr for non-handloader.
5) A 30'06 conld be used on Grizzly or other North American dangerous game with the 220gr RN loads. 7mm just doesn't have a big bruiser bullet available.
If you want the added point blank range of the 7mm Mag, get it. That is what the 30'06 gives up to the 7mm Rem Mag.