[RedTx]

So I have allready bought some TAC but thought I would ask what was the diffrence, and how much luck yall have with the TAC?

I bought TAC because it seemed like a all around good powder to use in my 6.8 extreme, 6.5 Grendel, and 5.56. I didnt what to have 3 diffrent powders floating around when I could condense.

Anyways if this is a terriable powder let me know that as well.

 

[paulosantos]

TAC is pretty good and will actually work very well for all three. By the way, you suck for having all 3 calibers.

For the TAC powder, just start by using the X-Terminator Powder recommended MAx and just add 1 Gr. and that will be your max.

Since you have the AR15Performance Barrel:
For the 90 Gr. bullets: 34 Gr. of Tac (If you can actually stuff that much in there).
For the 110 Gr. bullets: 31 Gr. of TAC.
For the 115 Gr. bullets: 30.5 Gr. of TAC.

Look for pressure signs and you might be able to go higher.

 

[HTR]

If you don't already have it, H322 will also work well for all three.

My favorite 5.56 load for prairie dogs (in this time of extreme ammo prices) Is:

Winchester brass
Wolf Primer
24.3 grains of H322
55 grain Hornady soft point seated to 2.250"

for 6.8

SSA brass
Wolf primer
110 grain SPH
31 grains of H322 (compressed)
COAL of 2.28"

I don't have a Grendel but I am quite sure H322 will work well in it.

 

[RedTx]

Thanks for the information guys. I already got the TAC on the way, but will keep the H322 in mind for the next round.

HTR, you should get a grendel. Not saying im pickng one over the other just saying its a nice gun. I dont get into the whole 6.8 this or 6.5 that. I shoot them at things and if they kill what im shooting at than im happy cause in the end that hog doesnt know the diffrence nor the piece of paper.

At the very least you could go I got a Grendel and it sucks Ha Ha

 

[babirl]

TAC is pretty good and will actually work very well for all three. By the way, you suck for having all 3 calibers.

For the TAC powder, just start by using the X-Terminator Powder recommended MAx and just add 1 Gr. and that will be your max.

Since you have the AR15Performance Barrel:
For the 90 Gr. bullets: 34 Gr. of Tac (If you can actually stuff that much in there).
For the 110 Gr. bullets: 31 Gr. of TAC.
For the 115 Gr. bullets: 30.5 Gr. of TAC.

Look for pressure signs and you might be able to go higher.

That's "gold" info for bunch of us... I'll dial mine down a bit but I do have "TAC" in house.

Varget sucks in 6.8, so I plan to add some X-Terminator or other soon due to availability/reputation. Wow, this is a great round that approaches "awesome" the more I research....

Probably be "cheaper" to just buy SSA...

 

[freddyp]

HI RedTx, I just started using Tac in my 6.8 with the Sierra 115 mk in a 26" PSS. I seated the bullets at 2.325 which puts the bullet about .025 off the lands. I started at 29.5 for 2550fps. I increased the load one grain at a time and stopped at 32.0gr for 2750fps. No signs of pressure with an outside temp of 80 degrees. I will try the 30gr and 32gr load again when the outside temp reaches 100 degrees. The 30gr and 32gr loads both shot under half inch at 100yds. I think Tac will prove to be a good powder for my PSS.

 

[razzman1]

Is there a preference--Tac or X-terminator? I'm about to pick up a few 8lb kegs, and I want to get it right the first time. I'm going to make a go at major PF in 3-gun with heavy 130 / 135 grain bullets out of a 20" barrel.

 

[paulosantos]

Is there a preference--Tac or X-terminator? I'm about to pick up a few 8lb kegs, and I want to get it right the first time. I'm going to make a go at major PF in 3-gun with heavy 130 / 135 grain bullets out of a 20" barrel.

For the 6.8SPC, you will be better off with the X-Terminator Powder.

 

[Test_User]

That is for sure. Xterm is better than TAC in the 6.8 I could never get anywhere enough in the case with TAC or get the vel when I could. It is a very good powder though. If you own all three of those you really need to drop Constructor a PM or maybe he will drop in on this thread. He has a ton of time with all of those calibers and numerous wildcats off both.

For the Xtreme and ARP barrels the powders for the 6.8 work uo like this:

Rel 10x for everything from 110-130 it can also be used for the 90s and can hit top vel but is very compressed

Rel 7 for 80-100. It has shown to be the best so far and damn near everything had been tried. I think I have every piowder that can relaistically be used in teh 6.8. A whole shelving unit of nothing but 1lb bottles of every powder.

For a one powder ball H335

For cheap and plinking Xterm. It is very dirty powder compared to others. So is 4198 for some reason.

For a powder to use for 5.56 6.8 and 308 H335 is the best hands down. H322 10x xterm all work with all three with lighter bullets in the other two calibers.

H322 is your beginners safe powder. Its easy to get accuracy. You can get decent vel. In some of the lower spec guns this powder may work best as you will not run out of room. You likely can not put enough in the case to blow your gun up from a over charge.

For max vel and accuracy combined 10x and 7 are tops if your barrel have the best specs. H335 is there on vel but not in accuracy although you can get some good loads. Best for when space is a real issue.

Since ui already have a ARP barrel I suggest 10 and 7 if you want the best and again CF can tell you the best for including the Grendel All I know of it is the best powder is 2520 most of the time

 

[DDriller]

Tim did you give up on Norma 200?

 

[Test_User]

No its a very good powder. I got the best 90 gr vel and even 110TSX vel with it from my 1:12 6 groove. The thing that changed is as we have honed what specs work best for the 6.8 barrels we have reduced friction and changed the way the pressure curve happens from what other barrels have. While I still get the same numbers from the newer barrels I can now get more vel from these.

This is actually what happened with H322 and others

When everyone was using SAAMI 6 groove standard rifling or even SPCII and 10 twist the powders with the curve like H322 tended to give the best perf or really most of the powders gave hardly any difference. 10x H322 H335 whatever about the same with the same bullets. This was becasue we could not go higher with certain powders from pressure so density difference did not have much effect. Once we started finding the best specs and the pref potential started going up. The barrels had the bullets farther down the barrel sooner and took less pressure to do that. This started moving the better loads toward faster powder and ones you could fit more in the case. H322 even back then was about maxed and now it was lacking. 10x had a better curve and you still had room to go up. Rel7 always had more room so this allowed it to pull away as well. H has been doing a ton of testing as of late and I woudl say we have almost honed this to the max. But there maybe a new thing on the horizon that may have an effect we are just waiting to hear back. H also found that with the same load the Xtreme and his 12 twist 4 groove barrel both rifling with custom designed buttons produce 50+ more vel than the other barrels with some 100 fps less. This is with only bore changes all using the same chamber. Another switch gave another 30 or so jump. This is how he broke 3200 with the 85 from the Extreme. The 16 was getting the same vel and some other 20s.

We will see but from a 16: 2700 from 115 2800 from 110s 3050 from 90s 3200 from 85 3300 from 80 that is really smoking for a case with only 30 grains of powders

The Xtreme barrels dropped pressure and decrease duration so significantly we had to increase the gas port up a couple steps so it woudl work with factory ammo. Its still not as big as some of the over gassed barrels out there but larger than what was normally used for a middy 16 by H. Some have such over gassing it is comical. I think its .the LMT that has a .110 gas [email protected] the carbine loaction!!!!! This is larger than even over gassed rifle length systems. I almsot think someone made a error and they just went withcasue it was already done and out there befor e they realized it as it is just so far out there its ridiculos.

 

[paulosantos]

Tim, I just ordered an 8LB jug of TAC and I will be trying it again for the 6.8SPC and the 5.56. I remember trying some TAC with my old 20" barrel and with 33.5 Gr. of TAC it was almost the same velocity as 32.5 Gr. of X-terminator with the 90 Gr. bullets. When I recently spoke with the Powder guy from Ramshot/AA, he said to take the reloading info for the X-Terminator and add 1 more Gr. of TAC and the velocities will be similar. I think TAC is very good powder because it is very cheap and it is pretty accurate. It may not produce the highest velocities, but it is a good powder to use.

 

[Test_User]

That is good to know. That is how I look at both x-term and tac as plinking powders. They are cheap usually easy to find. The issue with the extra grain is you run out of room but for a plinking round this may not be an issue. That is good to know though on load data. Thanks

 

[RedTx]

So using this TAC I bought is 1 moa going to be achievable? Yall got me all worried that I bought the wrong powder. I got a 8lb so its going to be a little while before I move on to something else.

All I want to do is shoot moa with all 3 guns using the same powder.

Tim_W who is CF? The guy with experience with the 6.8 and 6.5?

 

[paulosantos]

So using this TAC I bought is 1 moa going to be achievable? Yall got me all worried that I bought the wrong powder. I got a 8lb so its going to be a little while before I move on to something else.

All I want to do is shoot moa with all 3 guns using the same powder.

Tim_W who is CF? The guy with experience with the 6.8 and 6.5?

It is good powder. It should be able t shoot MOA.

 

[type911]

I have been using Tac in my 5.56 and .308 loads. I am looking for a place to start with my110grVmax, 12.5 inch WOA spc2 barrel. Does 29gr sound right? I appreciate the info sharing.

 

[Test_User]

Well no one can say it will be able to get 1 moa groups. That depends on the barrel. With a capable barrel TAC will certainly allow you to achieve even much better than 1 moa groups. Most powder will do that even ones that are way wrong for the 6.8. But what is needed is a balance of accuracy and velocity with proper curve for cycling. TAC should be able to do all of that. It will not get you into the top range for vel but accuracy shoudl be OK. If your gun and you are capable of moa groups I am sure a recipe using TAC will match that. I woudl say once you get thru with TAC there may be better powders that will give you as good or better accuracy with more vel. so you may want to switch but you did not buy powder that will not work.

 

[paulosantos]

I have been using Tac in my 5.56 and .308 loads. I am looking for a place to start with my110grVmax, 12.5 inch WOA spc2 barrel. Does 29gr sound right? I appreciate the info sharing.

29-30.5 Gr. should be good.