Re: 300 winmag vs 7mm mag
I know this is an old thread but I ran across it and thought I would put in my 2 cents, there are very large differences between these to cases and what they will do, bullet weights being equal the 7mm mag have the advantage due to their inherently high bc bullets for long range say past 5-600 yards even when comparing bullets of different weights between the 2 you still end up with the bc being higher for the 7mm line than the 30 cal. for example, a 180 grain swampworks bullet has a bc of .735 while their 210 gr 30 cal bullets have a bc of .665 so depending on your intended range of use will dictate which caliber would be best suited for the job. On the flip side of this the 300 win mag has it's advantages as well, a fair abundance of good factory match ammo is available should you ever find yourself in a pinch and need ammo right then, federal and black hills 190gr match come to mind. And the last and probably the biggest deciding factor in this whole debate for most people is barrel life, for a 7mm mag you'll be looking at between probably 900-1400 rounds of peak accuracy from the barrel before it begins to go south, with the 300 win mag you would likely make it to 2000 or more rounds, this is due to the bore to case volume capacity, mind you it sounds like a lot of rounds but in the off season there will likely be a lot or practicing going on and honing your skills at long ranges so there will be quite a few rounds down the tube and if you aren't very well off and don't want to send your gun to the smith very often to have a new barrel installed then this would be something to keep in mind.