I'm loading for 6mm T/CU, which is based on the .223 case. Velocities are lower than the large 6mms. I'm shooting prairie dogs.

I'm not certain, but the Speer TNT does a pretty good job of flying apart in most calibers. I have shot paper with the 70 gr 6mm TNT, but have not used it on PDs, so I can't really say. The .224/50 TNT is a little bomb.

Any of the polymer-tipped bullets -- 55 Nosler B Tip, 55 Sierra Blitzking, or 58 gr Hornady V-Max should do a pretty good job, even at somewhat reduced velocities.

The sierra 60gr. hp is quite explosive on small game. At least in my experience shooting Jack Rabbits, dillos , etc.

The 55gr ballistic tip is like a nuke!

I would suggest you try the 58 grain Hornady V-Max. The Hornady manual says you can get 2800 to 2900 fps with a 14 inch barrel in a Contender.

I found them to be VERY dramatic when fired from a standard 6mm Remington. They are much more impressive than the 55 grain Ballistic Tips.

I have used a few bullets in my 6 tcu, I have done well with the 55 gr nosler, 70 gr nosler, 65 gr vmax and the 70 gr blitzking, all of the bullets have rpoven to be quite accurate with the 70 gr blitzking leading the pack.

The 55 gr nosler is very frangible, on larger rock chucks with good solid body hits it usually doesn't exit. There will be a small drop of blood where the bullet went in and no exit but the chuck will be totally mushed inside kinda like a bag of jello.

The 65 vmax and the 70 gr btip and blitzking will exit and tear the chucks up pretty bad. I have been leaning toward the 70 gr bullets for a little better wind resistance and they seem to shoot a little more consistent for me.

My 6 tcu barrel is a 16" bullberry, it is very accurate and gets very good velocities, the 55 gr will run 3200 fps and the 70 grainers just nicely hit 3000 fps.

H335 and RL10X have been good performers.

You have been given good advice so far, but there's one bullet that I must add to the list: the good ol' Hornady 70 grain SX. It's quite frangible and has always given me stellar accuracy, especially at 6 TCU and 6x45 velocities.

I'm ease dropping here....I've just shot parer with my 6br. The 87gr v-max shoots great. The 58gr is what I want to shoot at closer distances.



Why Johnny...I forgot you were there. You my go now.....

quote:

Originally posted by R Flowers:
I would suggest you try the 58 grain Hornady V-Max. ...... They are much more impressive than the 55 grain Ballistic Tips.

I would agree the BT is not a massive expander - I have no hesitation in using 55gr ballistic tips at a MV of 3,400fps on 55lb roe deer. They do not explode and exit on occasion.

Bobby, et al,
What powder are you using to get the velocities you're getting? I'm using a rifle, so maybe there are better powder choices for a rifle than for pistol loads.

My vote is for the 60 grain Sierra hp.

With bullets of 70 grains and up, I've poured more H335 into the little 6mm wildcats (6mm-.223, 6 TCU, 6x47, 6x47 IMP, etc.) than any other powders combined and have always been rewarded with terrific results -- and that is for both rifle-length tubes of 18-24" and pistols barrels of 13-15" as well. It is far and away my favorite powder for this class of cartridges.

And I use nothing but Rem 7 1/2s as well.

What powder works with bullets lighter than 70 grains?

H-322 and N-135. But don't look past H335. It does best with the 70+ bullets but can do quite well with the lighter projectiles as well. But for me, when I did use the lighter bullets, H-322 seemed to be just the ticket with N-135 coming in a distant second.

Anyone try RL-7? It's all I've ever used for the light bullets.
It's good for accuracy. I just wonder if I can get better velocity with another powder.
I'll look into h-322.