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50BMG
Horse Plains Drifter
Forums Admins, Member, Moderator Posts: 39,389 ***** Forums Admin
I was looking at ballistics on the 50BMG round. On the Barrett site they say their ammo is 11098 ft. lb. muzzle energy.
Somebody on the Barrett forum said 12600 ft. lb muzzle energy.
Over on our GD forum somebody said 16000 ft. lb. muzzle energy.
Can any of you experts pin that down any closer?
Thanks in advance.
Somebody on the Barrett forum said 12600 ft. lb muzzle energy.
Over on our GD forum somebody said 16000 ft. lb. muzzle energy.
Can any of you experts pin that down any closer?
Thanks in advance.
Comments
It could be all three muzzle energies are correct depending upon the load in question.
Muzzle energy depends upon the following formula:
0.5MV^2
Where:
M=Mass of bullet (grains) This isn't weight by the way.
V^2 = Velocity of the bullet squared
Therefore, depending upon the particular mass and velocity of the bullet all three muzzle energies could be correct. To know for sure you have to know the details of the load which would be the weight of the bullet and the velocity.
With these two factors the muzzle energy can be calculated.
Hope this helps.
Heavyiron
Not everyone considers all of the variables but they look instead for the largest amount of energy or velocity. Besides the velocity and mass, the barrel length can have an impact on the velocity. There are some newer bullets that will show increases over these figures except that they are highly specialized and very expensive even when compared to today's prices.
Ballistic performance
Bullet weight/type Velocity Energy
647 gr (41.9 g) Speer 3,044 ft/s (928 m/s) 13,144 ft?lbf (17,821 J)
655 gr (42.4 g) ADI 3,029 ft/s (923 m/s) 13,350 ft?lbf (18,100 J)
700 gr (45 g) Barnes 2,978 ft/s (908 m/s) 13,971 ft?lbf (18,942 J)
750 gr (49 g) Lapua 2,618 ft/s (798 m/s) 11,419 ft?lbf (15,482J)
800 gr (52 g) Barnes 2,895 ft/s (882 m/s) 14,895 ft?lbf (20,195 J)
Best.
I was looking at ballistics on the 50BMG round. On the Barrett site they say their ammo is 11098 ft. lb. muzzle energy.
Somebody on the Barrett forum said 12600 ft. lb muzzle energy.
Over on our GD forum somebody said 16000 ft. lb. muzzle energy.
Can any of you experts pin that down any closer?
Thanks in advance.
I can guarantee you that what ever you hit isn't going to notice the difference between 11098 and 12600 or even 16000 for that matter.[:D]
Tim