.303" ballistic information

[Simon R]

Kynoch .303" Mark VII ball had a recorded muzzle velocity of 2450 f.p.s, exerting 2330 foot pounds of energy.

At 50 yards velocity was down to 2356 f.p.s. with energy at 2160 foot pounds.

At 100 yards velocity was 2260 and energy at 1985 pounds per foot.

Does anyone have velocity/energy info. out to maximum range?

There must be a handy distance/velocity table - does anyone have it?

[Tim]

Found this on enfieldcollector.com

From the 'Textbook of Small Arms - 1929'

The Mark VII ball round has a 174 grain bullet.

With a muzzle velocity of 2,440 feet per second, the length of time for it to 'arrive' is...

100 yards - .2 sec - 2,200 fps. velocity

600 yards - 1 sec

1000 yards - 2.1 secs

1,300 yards - 3.1 secs - 880 fps. velocity - maximum range on No.4 sight

1,750 yards - 5.1 secs - close enough to one mile

2,000 yards - 6.4 secs - 600 fps. velocity - maximum range on SMLE leaf sight

2,600 yards - 10.8 secs - maximum range on volley dial sight

2,800 yards - 12.8 secs - 340 fps. velocity - maximum range on volley dial sight

3,000 yards - 15.1 secs - 300 fps. velocity - that is nearly 2 miles away!

Hope this is of assistance.

Cheers,

Tim

[Simon R]

Thanks for that.

Do you happen to know the velocity at 1000 yards and 1 mile?

[Simon R]

Oh hold on - distance divided by time.... GCSE maths saves me....

[TonyE]

Velocity a 1000 yds = 1000 fps

Velocity at 1700 yds = 720 fps

Velocity at 1800 yds = 680 fps

Velocity at 1 mile (1760 yds) = 696 fps NADI (that's technical talk for "near as damn it")

according to the range table, from 1000 yds to around 2200 yds decelleration is linear at 40 fps per 100 yds.

Regards

TonyE