243 70 TNT 3800 FPS

[urbanrifleman]

Speer TNT 70 grain. N160 50 grains. +20 in from touch. See velocities. Gotta love N160.

 

[Geno C]

They’re screaming coming out of my 243ai too!

 

[urbanrifleman]

They’re screaming coming out of my 243ai too!

I did a test at 3600 with that bullet on a water bottle. It literally disintegrated. I found the plastic in a sheet like a sheet of paper and it had jumped back toward me 10 yards.

 

[Zeke 225]

Have shot that bullet out of a 6mm284 case 12 twist at that speed or little faster, it is devastating on coyotes, will lift the hair off them and throw chunks of meat all over. On prairie dogs They still cast a faint shadow on the ground, while the pieces are still falling to the ground.

 

[urbanrifleman]

Have shot that bullet out of a 6mm284 case 12 twist at that speed or little faster, it is devastating on coyotes, will lift the hair off them and throw chunks of meat all over. On prairie dogs They still cast a faint shadow on the ground, while the pieces are still falling to the ground.

Ouch....

 

[Zeke 225]

Called in a coyote, he winded me and took off, he made his mistake on looking back at me about 140 yards away over his shoulder in some tall blue stem grass. All I could see was his rear half of him, that bullet ripped his left leg completely off his hip joint except for some skin attached, that still held it on and about 3 pieces of meat laying in front of him size of 1/4 lb chunks. They stop coyote in there there tracks and stay down on my experience.

 

[AckleymanII]

70g TNT are very, very accurate in my 12T 243 AI, and 6 BR.

I shoot them at 3850 in the 243 AI with 48.5g of Win 760, Rem 7/08 case neck turned, and cci 250 gets the sd down in single digits.

There is a wide accuracy node with 760, from 47-50.5g in the Hart 243 AI's that I have had many of. I never got into trouble with 48.0-48.5g in 95* temps.

AA2700 is an excellent choice with the same powder charges, check the heat index on 2700, get ready for a shock.

I have NEVER full length sized a 243 AI case shooting 48-48.5g of 760 with a 250 primer in a rem case...never.

Suburbanrifeman, that is some fantastic velocity for a 243!!!

 

[urbanrifleman]

I have 24 lbs of N160. For 243 there really isn't another powder required.

 

[urbanrifleman]

check the heat index on 2700, get ready for a shock.

What does this mean?

 

[urbanrifleman]

70g TNT are very, very accurate in my 12T 243 AI, and 6 BR.

ACKMAN2 turned me onto the TNTS.

Here are two targets shot from my 13.5 twist 6BR. One is the 68 Avengers from Barts. The other is the 70 TNT I bought in the bulk pack. Interestingly, they both tune at 4 thou into the lands.

 

[AckleymanII]

What does this mean?

Powder burn rate or heat produced

 

[Downhill]

Shhhhhhh!!!!!! If everyone finds out how well the 70 TNT shoots the prices will go up!! I run them in both a 10 twist and 8 twist 6br's. Was amazed at group sizes given it is not a match bullet.

 

[urbanrifleman]

Powder burn rate or heat produced

What does it compare too?

 

[snert]

I am a fan of the TNT in 224, and it makes me hapy to hear the 243 is good too...next up, a 6mm of some sort.

 

[urbanrifleman]

I am a fan of the TNT in 224, and it makes me hapy to hear the 243 is good too...next up, a 6mm of some sort.

What were your findings?

 

[snert]

In the 224 I use it in a 222. I run 23 grains of BM and it shoots pretty well from a "used up" BR barrel. Great economy bullet. Splatters PD, kills groundhogs just fine, lots cheaper than Vmax