[mike160304]

Nothing to add!

Mike

 

[Island made]

http://www.1728.org/energy.htm

Thats the calculator I use.

 

[StringSlap]

The formula is simple. You just have to convert grammes to grains (plenty of converters online).

V(fps)squared X Wt(grains) / 450240

So an 80 grain projectile at 220 fps would be: 220 x 220 x 80 / 450240 = 8.59 fpe

 

[gunslingster]

Now I wish I had these kind of brains!!!

 

[mike160304]

http://www.1728.org/energy.htm

Thats the calculator I use.

Thanks, very nice, I shall use it.

Mike

 

[mike160304]

The formula is simple. You just have to convert grammes to grains (plenty of converters online).

V(fps)squared X Wt(grains) / 450240

So an 80 grain projectile at 220 fps would be: 220 x 220 x 80 / 450240 = 8.59 fpe

Thanks, I'll convert your formula for grammes, from grains, as my mass data are always in grammes.

Mike

 

[StringSlap]

The formula is simple. You just have to convert grammes to grains (plenty of converters online).

V(fps)squared X Wt(grains) / 450240

So an 80 grain projectile at 220 fps would be: 220 x 220 x 80 / 450240 = 8.59 fpe

Thanks, I'll convert your formula for grammes, from grains, as my mass data are always in grammes.

Mike

This should make it easy for you... 1 gram = 15.4324 grains

 

[mike160304]

The formula is simple. You just have to convert grammes to grains (plenty of converters online).

V(fps)squared X Wt(grains) / 450240

So an 80 grain projectile at 220 fps would be: 220 x 220 x 80 / 450240 = 8.59 fpe

Thanks, I'll convert your formula for grammes, from grains, as my mass data are always in grammes.

Mike

This should make it easy for you... 1 gram = 15.4324 grains

Thank you, yes i did know that bit, because I used to struggle with the venerable "Grains" scene when I was shooting black powder replica revolvers, and reloading cartridges for a 44 magnum Ruger Super Blackhawk . . .