Interested in Comments on 70 Grain 6mm Speer TNT -

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Forums > Varminter & Hunting Forum > Interested in Comments on 70 Grain 6mm Speer TNT

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MQ1

10/18/09

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Folks,

I have been using the 70 grain speer TNTs for fireforming my .243 AI because they were about as inexpensive a bullet as I could find.

I was surprised to find that the fireform loads easily put out half inch groups, and the velocity was in the neighborhood of 3600 fps.

Tonight, I read on the box that the TNT should not be used in excess of 3400 fps.

(

Now, of course,

after horsing around with more expensive varmint bullets, I'm thinking that the TNT is probably my best choice for all around varminting...and I want to know what I can expect if I push this bullet a bit faster (which I believe that I easily can in this rifle).

BTW, my rifle has a 1-12" twist Hart barrel that is finished at 26"

What are your experiences with the 70 grain Speer TNT? What are your experiences with the reasonable upper limits in velocity, and what can I expect the terminal performance to be?

MQ1

Dave223

10/18/09

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I've been shooting some 70 TNT's out of my 6BR. There is nothing wrong with them at all. I have used them on rabbits, hares and crows so far and they are a devastating projectile and accuracy is very good.

WOLF2

10/19/09

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i used the 70 grain tnt in my .243 rem 700 vls sending them at 3600 and some did'nt reach the target. i now use the 58 grain v-max sending them at 3900 with no problems.

soldierofchrist

10/19/09

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With your barrel twist you may be able to push them a little faster since most factory barrels are 1 in 10" while yours is 1 in 12". I'm guessing the velocity that your pushing is about on the edge of what the bullet can take before it throws it jacket off from spinning to fast.

MQ1

10/19/09

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soldier,

That is what I was thinking...that I may be able to get away with a bit more velocity because of the twist...

I'm hoping that some persnickity, data loving rifle nut with a chronograph will pipe up and share what they know in regards to how fast this bullet can be pushed before it disintegrates in flight

Not that I can't find that out for myself...of course I'll have to do that anyway...but it is always helpful to have an understanding from others who have tread the path before me...

MQ1

Ogre6br

10/20/09

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6BR no turn varminter setup
reloader 10-x
70 TNT
turns rabbits, hares, foxes and pigeons into paddock pizza

P

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