.308 Barnes tsx in 180 grn

150gr TTSX shot very accurate out of my 1:9.5 twist 280 Rem @ 2900 fps. Im sure they will be fine out of a 7x61 unless it's a 1:12 twist, then I would get it rebarreled because not many 7mm bullets of any useful sort will stabilize in that twist

details on the expanded bullet - 8mm 200gr tsx impacting @ 20 yards through the shoulder of an elk, muzzle velocity 3000 fps. 198.6 grs retained weight and one dead elk
 
todbartell said:
150gr TTSX shot very accurate out of my 1:9.5 twist 280 Rem @ 2900 fps. Im sure they will be fine out of a 7x61 unless it's a 1:12 twist, then I would get it rebarreled because not many 7mm bullets of any useful sort will stabilize in that twist

details on the expanded bullet - 8mm 200gr tsx impacting @ 20 yards through the shoulder of an elk, muzzle velocity 3000 fps. 198.6 grs retained weight and one dead elk
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Thanks for the additional info. Again the expansion of your bullet couldn't get much better. It speaks well for todays bullet technology, holding together that well, especially considering the velocity and the range.

My 7x61 has a 1:10 twist and with some of the more traditional constructed bullets, it shoots well. As I mentioned previously, crunching the spread sheet figures for the 150gr TTSX, the SF didn't look to good so I was a little concerned on the down range longer distance accuracy. So, something I was looking for is to see if anyone else has used this spread sheet data and whether or not they found it to be credible.

I'm hoping I'll be successful for an AB Antelope draw in the next few years and if so, I plan on using the 7x61. Wondering about the credibility of the spread sheet info and how it actually relates to down range or longer range characteristics of a cartridge and bullet performance is why I was concerned with the results I 'crunched' for the 150gr TTSX in 7mm.
 
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Satain said:
My triple shocks after 50 meter's would open up due to the extreme muzzle velocity and after 100 would completly seperate. But once I dropped the speed they worked great.
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Pardon? Are you indicating with this post that you were driving TSX's so super-extremely fast that they come apart in the air?

If so, I would dearly like to know what you are pushing them with to obtain this kind of velocity....As I'm sure would Barnes...
 
Johnn Peterson said:
My 7x61 has a 1:10 twist and with some of the more traditional constructed bullets, it shoots well
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should be fine with a 150, if not try a 140 or 120gr, or even the new for 2010 110gr 7mm. All will work just fine on medium sized game and the 140s & 150's will shine on moose and elk
 
todbartell said:
should be fine with a 150, if not try a 140 or 120gr, or even the new for 2010 110gr 7mm. All will work just fine on medium sized game and the 140s & 150's will shine on moose and elk
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That's pretty well the selection of 7mm TTSX I did pick up, 120's, 140's and 150's. I would like to try some heavier ones later on but these will keep me occupied for the time being. My '06 is a 1:12 twist so what would you think would be an 'ideal' bullet weight? Something lighter and faster like 130 or 150?
 
My triple shocks after 50 meter's would open up due to the extreme muzzle velocity and after 100 would completly seperate. But once I dropped the speed they worked great.
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Do you mean to say that the groups opened up,or that the TSX bullets actually opened up in the air?And what is your definition of extreme muzzle velocity?I have driven the tsx at 3500fps and they group well and perform great on game.
 
in my limited experience with them TSX's don't seem to out penetrate Nozler Partions. I have never recovered a partion from an animal, TSX's I have.

The TSX or any X bullets definitely out expand everything, and have really changed the hunting bullet forever.
 
in my limited experience with them TSX's don't seem to out penetrate Nozler Partions. I have never recovered a partion from an animal, TSX's I have.
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I have recovered several partitions.From my experiences the TSX has penetrated more.

The TSX or any X bullets definitely out expand everything, and have really changed the hunting bullet forever.
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They do expand quite nicely,but not as much as the ballistic tip.
 
buckbrush said:
in my limited experience with them TSX's don't seem to out penetrate Nozler Partions. I have never recovered a partion from an animal, TSX's I have.
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It is funny you say this. I have quite a few years experience with Partition and have never recovered a bullet. I switched to TSX three years ago and I have recovered my 200 gr 300WM bullet from a bull moose. One shot one kill.

As I haven't used the TSX long enough, I can't say it can't penetrate as deep as Partitions.

I like TSX and will keep using them.
 
Gatehouse said:
So is a higher number supposed ot be better? Or?:confused:
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Yes. A defination of SF levels is part and parcel of the sperad sheet I offered to e-mail you. Anyway, they are;
  • SF < 1.0 Bullet not stabilized
  • SF > 1.0 Bullet is marginally stabilized
  • SF > 1.3 Bullet is fully stabilized
  • SF > 1.5 Bullet is maximally stabilized
The results I obtained in my 'number crunching', using the 150gr Barnes TTSX in my 7x61 came out at SF 0.91. That result, if the info is reliable, is what had me questioning the 'possible' down range accuracy as I'm planning on using the 7x61 for an AB Antelope should I be lucky to get a draw within the next couple of years. Also this is why I've asked if anyone out there has used this info/spread sheet and found it to be reliable. Looking for a little hands on experience with it if possible.
 
So anything over 1.5 is good, I presume. Or the higher it goes the gooder it gets.

If you mail me the spreadsheet, I will run other TSX bullets from various cartridges through it, see what is says in relation to what the actual group size is.

gatehouse@uniserve.com

thanks
 
Gatehouse said:
So anything over 1.5 is good, I presume. Or the higher it goes the gooder it gets.
If you mail me the spreadsheet, I will run other TSX bullets from various cartridges through it, see what is says in relation to what the actual group size is.

gatehouse@uniserve.com

thanks
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I assume so. The 130gr TTSX in my 308NM comes out @ SF 3.55. When you get the spread sheet, it just a matter of changing your bullet details in place of what is on the sheet already.
 
Gatehouse said:
In a .308, I'd go with the 150gr TTSX or even the 130gr TTSX.

180gr TSX is a bit too heavy and slow for a .308, you will get better expansion and penetration wiht one of the lighter Barnes bullets.
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You forgot too long as well.

I agree with Clarke, a 150 TSX/TTSX would be a better choice. Barnes claims that you can make the 180 go 2600 with 44 gr of BL-C(2) or 43.5gr of RL15, but I wonder how long a barrel they used. Seems like they're faster than I would anticipate. That bullet has to sit deep in the case to function through the mag of a 308.
 
I just paid $74.95 + tx for a box of 50 180g TSX's for my M305 Norinco, and then I read this thread :( Does anyone with a 30-06 or higher want to trade a box of 150's of 130's? I also can't seem to find much in the way of load data for these things, I use H380 for my .308 reloading, damn accurate @ 43 grains powder 180g speer hotcor bullets.
 
Mudflapper, ball powder is pretty forgiving with long bullets, and according to the Barnes manual, Win 748 backing the 180 gr TSX has a loading density of 88% and produces 2570 fps. All the same, I would try working up a load of H380 with the 180 TSX. The Barnes manual lists 200 gr TSX data for the .308 with a heavier charge of 760 (99% load density) for a velocity of 2322, than you've been using with H-380 and the 180 gr Speers. Win 760 and H-380 are quite similar.
 
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