Barnes ttsx data for .308

[Selous]

View attachment 60014

Last year, I shot some Hornady 150-gr Interlocks and 150-gr Barnes TTSX out of three rifles ( one mine, two a friend's, testing loads in his), and all three rifles shot the Interlocks and TTSX to the same spot, and all of them way-sub-moa groups, same brass, primers, powder, same charge. And we shot some other .308 loads before that to get his rifles zeroed. The newer bullets have the driving bands, so lower friction and more like conventional bullets.

just found this target which is representative of the accuracy I get with the 130tTSX. The group is about the same with Norma 150g BT factory ammo and POI is within 1/2 inch with both loads

 

[A Guy Out West]

Srvet,
That's not a bad little group. What kind of rifles did that?

 

[Selous]

Tikka 595 with a sporter weight barrel and zeiss 2.5-10 scope. Basically my normal woodland stalking rig with my preferred stalking load. Group was shot off my belly with a harris bipod. The previous group that day was the same but on someone else's target ... Doh!! Load is 46g H4895 that chronos a smidge under 3000fps

 

[Southern]

That 130-gr TTSX makes a .308 into almost a .270 Win. I must try it.

The three rifles we shot with USGI FMJ, Hornady 150-gr IL, and Barnes 150-gr TTSX were a Steyr Prohunter, a Kimber 84M, and a Savage with a pretty heavy barrel and the Accutrigger - all putting 5 shots touching or overlapping in tight, round groups.

 

[Selous]

I could push it faster but stopped load development as I had an accuracy node I was happy with. The effect on roe deer is demonic but without excessive meat damage.

 

[Alantoo]

I have recently posted this on another copper bullet thread but this seemed to be the most appropriate place.

This is the load data for .308W 130gr TTSX, as yet (Dec 2015) unpublished, that I received from Barnes.

NB. I have altered this document from the .pdf I received. I spotted a typo (confirmed by Barnes) on the case length and have adjusted it to SAAMI spec. I have also added the warning/disclaimer from their email and the S.D. and B.C. figures gleaned from elsewhere.

Barnes have reduced the COAL to 2.785" in this chart. I found the advantage is that it brings the case mouth onto the full size section between the first two grooves/canelures. The standard 2.810" brings the case mouth to the top end of the middle groove.

Alan

View attachment 130gr TTSX edited AE.pdf

 

[Brian243]

I have recently posted this on another copper bullet thread but this seemed to be the most appropriate place.

This is the load data for .308W 130gr TTSX, as yet (Dec 2015) unpublished, that I received from Barnes.

NB. I have altered this document from the .pdf I received. I spotted a typo (confirmed by Barnes) on the case length and have adjusted it to SAAMI spec. I have also added the warning/disclaimer from their email and the S.D. and B.C. figures gleaned from elsewhere.

Barnes have reduced the COAL to 2.785" in this chart. I found the advantage is that it brings the case mouth onto the full size section between the first two grooves/canelures. The standard 2.810" brings the case mouth to the top end of the middle groove.

Alan

View attachment 66923

Alan, many thanks for posting Barnes revised reloading data for the 130 grain TTSX, this has several significant changes to their previous data. For this latest load data a faster barrel twist rate is used along with a different primer and COAL. The most significant change is a reduction in starting and max. powder loads for all recommended powders of between 2.5 to 5 grains which is probably much realistic in my experience. I'm using Varget, previously the most accurate powder where the max. load was 52 grains. I was getting primer flattening at any thing over 48 grains so the revised max. load of 48.1 grains is much more realistic and in line with my load.
Srvet, your load of 46 grains of H4895 is also the new max. load, (previous max. load was 50 gr.)

 

[Sako308]

Surprised to see such a difference in the figures, also use Varget and had tried loads over 50 grains although they were getting fairly compressed by then. Eventually settled on 47.5 grains as the most accurate for my rifle.

Anyone know when this new data for TTSX bullets will be published (new manual or website)? About to start loading 270 WSM (130gr) and don't really want to be over doing it.

 

[Yorric]

It doesn't matter so much what the latest max data prescribes - you still need to work up your load. As long as you don't get pressure signs even the "old" data can work well.
I shoot 130 grain TTSX 308 with 50 grains of Varget - no signs of pressure seen yet & deer don't like them at all.
I will however keep an eye on them as the weather warms up - just in case I'm on the cusp. I developed the load in winter & firing at below 5 degrees C no problems.
I have noticed my Sako 308 seems to be less susceptable to giving pressure signs than some other rifles.

Ian

 

[Alantoo]

Barnes have new reloading data for the 110 and 130grain TTSX in .308W on their website. It differs slightly from the data they emailed to me and I posted here earlier.

130grain COAL now down another 0.050" to 2.735"

Alan

 

[deerwarden]

I've used 130gn TTSXs over H4350 for the last four trips to Africa on plains game cull hunts, my Saur 270 loves them and they perform better, and are more accurate than my previous loads using lead based bullets. Tried the expensive MRX bullet but went back to TTXXs as there was no advantage for the extra cost. I don't use them in the U.K. on some of my smaller/more compact areas, as I have had ricochets off fallen trees on occasion's. But that could happen with any bullet, TTXX's being solid copper don't breakup like lead based ones do, and I have had them go their merry way like an angry bee. I've used them on 80+ warthog, springbok, blesbuck, and black and blue wildebeest, only one huge cow blue wildebeest, was given another TTXX, but on gralloching it, it wasn't needed just insurance. Cant rate them high enough, never once let me down, and reloading for them is simple, loads of data on the Barnes web sight. deerwarden