55gr Nosler BT, Vit N140 - .243 Load

[TimFuller]

Got hold of some Nosler 55gr BT in .243. I also have N140 powder.
Was just looking to see if anyone has any load data.

Have done some research and was thinking of starting at 39gr and working up to 44gr.

First time using N140, have previously used H414.

Thanks

 

[Sierra]

I used h380 in my 243 behind a 55gn nosler. I have got rid of the rifle so it was a few years ago but if I remember correctly n140 is more suited to the mid-heavier range of bullets in that cal.

 

[25 Sharps]

Rifle reloading data | Handloading | Rifle calibers | Centerfire Rifle bullets | Reload your own ammo - Vihtavuori

Vihtavuori offers rifle reloading data for numerous calibers and bullets for match and hunting purposes. Never exceed maximum loads.

www.vihtavuori.com

Use the 58 gr data, start at the bottom and work up.

This will be a destructive round

 

[PeterH]

.

This will be a destructive round

On the barrel??

 

[25 Sharps]

On the barrel??

barrels are consumables like break pads on your truck

 

[25 Sharps]

I used h380 in my 243 behind a 55gn nosler. I have got rid of the rifle so it was a few years ago but if I remember correctly n140 is more suited to the mid-heavier range of bullets in that cal.

Perfect for 55s in 22-250 and .243, you may be thinking of N160

 

[Rhys68]

Vit N140 generally too fast a powder for .243
Better off staying with H414 or Vit N160,
Reloader19

 

[25 Sharps]

Vit N140 generally too fast a powder for .243
Better off staying with H414 or Vit N160,
Reloader19

Not for light bullets it isn't, in fact N160 is far too slow for the OP's application which is why viht list 140 and not 160 for 58 gr bullets

Rifle reloading data | Handloading | Rifle calibers | Centerfire Rifle bullets | Reload your own ammo - Vihtavuori

Vihtavuori offers rifle reloading data for numerous calibers and bullets for match and hunting purposes. Never exceed maximum loads.

www.vihtavuori.com

 

[Rhys68]

Fair shout..
Only ever bothered with 87gn bullets and above for .243
Always used .22-250 for lighter stuff.
(No one powder will perform well on all bullet weights)

 

[25 Sharps]

Fair shout..
Only ever bothered with 87gn bullets and above for .243
Always used .22-250 for lighter stuff.
(No one powder will perform well on all bullet weights)

Very true, wasn’t suggesting it would, 140 would be good in your 22-250 though for the heavier end (assuming you shoot a 1:14)

 

[Rhys68]

H380 Best in .22-250
50gn vMax
2 groups of three shots

 

[25 Sharps]

H380 Best in .22-250
50gn vMax
2 groups of three shotsView attachment 158221

Until it runs out.......

Nice group, I shoot the 50s in my .223 AI, great bullet

 

[hedge hunter]

Until it runs out.......

Nice group, I shoot the 50s in my .223 AI, great bullet

Wot velocity are you getting out off the 223 Ai .barrel length. Thanks

 

[25 Sharps]

Wot velocity are you getting out off the 223 Ai .barrel length. Thanks

juts over 3600 fps with exterminator and lapua brass

 

[Milligan]

From my notes I was using 41gr N140 with a 60gr Sierra Blitzking. accurate and no signs of pressure but then I only put 3 or 4 through the rifle as an experiment.
Seemed accurate enough but hardly a quantitative study.

 

[TimFuller]

Thanks all for your responses. I ran up a few loads 40, 42 & 44 grains of N140. Best result with 42 grains. 5 shot group at 100yrds - 0.56in.