What caliber

[Fronty Owner]

Yeah, BC is ballistic coefficient. its a measure of aerodynamics using factors of mass, diameter, length and drag coefficient (hmmm a coefficient of a coefficient). anyway. the higher the number, the more stable the bullet will fly. More stability translates to better downrange performance, less bullet drop, more energy downrange.
Everything I read, it seems like the 30 caliber is has the most options in weight. and the .308 cartridge is one of the optimal designs when you start looking at the amount of powder burned to produce the velocity.
That said, alot of times when most people start talking velocity, the difference in two cartridges may only be a couple hundred feet per second.
The .25-06 with a 120 gr flat based bullet .394 BC is 2963 ft/sec with 50.5 gr of IMR 4350 powder.
the .270 with a 130 gr boat tail bullet .436 BC is 3032 ft/sec with 54.5 gr of IMR 4350 powder.
The .270 (with the same powder) will put a heavier bullet down range faster with about 8% more powder (read a bit more recoil)

The 7mm Rem Mag I shoot will get a 120gr flat based bullet .365BC moving at 3300 ft/sec with 61.5 gr of IMR 4064 powder.

[IAhunter87]

thats if ur shooting at a buck but u cant shoot bucks during the rifle season unless they have dropped there antlers. Ok then somebody explain to me why a 270 is better then a 25-06 besides heavier bullets.

[IAhunter87]

Next ? front what does increasing the powder charge do for a 25-06 would it achieve the same fps and dowrange energy

[annabelle]

Originally Posted by IAhunter87

Next ? front what does increasing the powder charge do for a 25-06 would it achieve the same fps and dowrange energy

You will get into some stability and accuracy issues if you try to push the .25-06 too fast. If you can call, you won't need anything but a 12 ga. for yotes anyway.

[annabelle]

Originally Posted by IAhunter87

thats if ur shooting at a buck but u cant shoot bucks during the rifle season unless they have dropped there antlers. Ok then somebody explain to me why a 270 is better then a 25-06 besides heavier bullets.

What does it matter if they have antlers.......you want a one shot clean kill.

[Fronty Owner]

Originally Posted by IAhunter87

thats if ur shooting at a buck but u cant shoot bucks during the rifle season unless they have dropped there antlers. Ok then somebody explain to me why a 270 is better then a 25-06 besides heavier bullets.

the .270 being better by giving you a heavier bullet that is going to retain more mass. small, high velocity rounds are designed to fragment quickly in a light skinned target.

Originally Posted by IAhunter87

Next ? front what does increasing the powder charge do for a 25-06 would it achieve the same fps and dowrange energy

since I listed the max recommended charge, you risk over pressuring your rifle.

A little more powder may induce an instability.

[IAhunter87]

ok well thanx u guys i believe i may go with the 270 since i can also buy ammuntition over the counter around here and i haven't seen a single box of 25-06 ammo in any sporting goods store

[Fronty Owner]

I think the .270 is a fine choice.
Since this is your first rifle, you're making compromises. When you figure out its weaknesses in what you do the most, you'll buy another rifle that will be a bit more specialized.