kilotanker,
The animal won't know the difference. That is less than 10% more energy retained for over 10% more powder used. The problem with the big magnums is that you run into the point of diminishing returns where incremental increases are just that, incremental.
And where ballistics are concerned, incremental increases are functionally meaningless. As bullet mass increases (something that you will lean towards for long range shooting) the differences get smaller.
300 Win Mag, 220 gr projectile, 2810 fps. 81 gr Retumbo
300 RUM, 220 gr projectile, 2905. 101.5 gr Retumbo
So is the extra 20.5 grains of powder (which is 25% over the Win Mag) worth 95 fps? That depends on your priorities and your wallet I guess.
That extra 95 fps isn't going to turn a miss into a hit for you, you still have to know your dope and have a good wind call.
Jimro
Example according to hodgdon a 300 win mag with a max load of 84 Grains of retumbo and a 200 grain accubond their velocity is 2962 And muzzle energy of 3900 ftlbs. And your retained energy should be around 2200 at 500 yards. Also according to hodgdon same bullet and powder for the rum at 95 grains for a muzzle velocity of 3096 with muzzle energy of 4200 and retained energy of 2442 at 500 yards. Maybe i am wrong but an extra 200 ftlbs of energy is alot.
The animal won't know the difference. That is less than 10% more energy retained for over 10% more powder used. The problem with the big magnums is that you run into the point of diminishing returns where incremental increases are just that, incremental.
And where ballistics are concerned, incremental increases are functionally meaningless. As bullet mass increases (something that you will lean towards for long range shooting) the differences get smaller.
300 Win Mag, 220 gr projectile, 2810 fps. 81 gr Retumbo
300 RUM, 220 gr projectile, 2905. 101.5 gr Retumbo
So is the extra 20.5 grains of powder (which is 25% over the Win Mag) worth 95 fps? That depends on your priorities and your wallet I guess.
That extra 95 fps isn't going to turn a miss into a hit for you, you still have to know your dope and have a good wind call.
Jimro