I just ordered some for 30 cal and some for 7mm. What's really going on with them besides good accuracy. Seems like some people that have switched are reporting higer velocity than they got with the regular barnes yet no pressure signs.
To me this just can't be. Can some of you users tell us what velocity you are getting compared with other bullets and the same powder charge. thanks kraky.

I'm shooting 140g Barnes TSX in my 270 WSM with 75g MagPro and getting 3400 fps with no pressure signs.

This is about 175 fps faster than I can get with Nosler Partitions

They are more accurate than the XBT bullets and I get less fouling than the XBT bullet.

For me, Their marketing hype seems to be true.

We will see how their terminal performance this coming week.

I also loaded some 168g 30-06 with 61g RL-19 and get 2900fps.

[ 09-28-2003, 07:23: Message edited by: Painted Horse ]

i use noslers as my standard..... and as soon as i get my barnes 180 gn tsx i will have them pressure tested with the same load as i use for the 180 gn noslers and as soon as that happens i will post the results.....just remember velocity
equals pressure and pressure equals velocity....there are no free rides
daniel

PAINTED HORSE
i have a load in my 06 with a 200 gn nosler that i get 2820 fps with no pressure signs however im running at a pressure of about 70,000 psi according to the pressure gun ...just because there are no pressure signs does not mean you have not crossed the red line
im not saying you are over pressure with your load im just saying pressure signs are not always evident
daniel

Painted Horse ---- something is wrong as you are indicating 3600 ftlbs of ME.

kraky,

My take on the TSX is the same principal as the North Fork's, GS Custom..............They all work the same.....Like piston rings. Less bearing surface, less surface pressure. Now I might be total off base, but that has been GP answer that I've been given by folks in the know. My .02$

[ 09-28-2003, 19:54: Message edited by: CK ]

I have some of the Gs customs and they DEFINATELY seem slower than standard bullets of the same wt.
On the other hand what I've read about Northfork is they seem to make the same pressure or slightly more than other bullets of the same wt.

Less bearing surface is the answer. Just like shooting 80 gr MK's vs 80 gr. JLK VLD's in my 223. You will be blowing primers if you put the Sierra in the same load as the JLK. Same chamber brass powder and weight of bullet but one can be pushed 100fps faster. I too have been having excellent results with the 180gr 30 cal TSX.

Are you guys getting more velocity with the same powder charges or, are you bumping up a grain or two> (in relation to previous loads with barnes bullets?)

I bumped it 8/10ths of grain. Accurate Powder shows the max load at 74.2g with the Hornady bullet. I went to 75.0 grains. I started with Nosler BST and Partitons and worked up to max listed load. I then decided to try the Barnes XBT's and worked them up to the same listed max load ( they are 70 fps faster than the Nosler also). The TSX bullets became available in June and I started playing with them. Barnes suggest the new TSX bullet can handle 1-2 grains more than their older XBT bullet. Less pressure because of the grooves. Since the XBT's had worked fine at 74.2 I worked up and bumped the TSX's to an even 75.0

73.0g = 3309fps
74.0g = 3340fps
75.0g = 3371fps
My groups tighten up as I increase the load and my best group come at 75.0. I have not tried anything higher than 75.0grains. Nor do I intend to.

Load Data for the 270 WSM is limited. MagPro data is even more scarce and the nex TSX bullet data didn't exist this summer. So it's hard to tell what is safe. Hence my asking questions.

I've shot over a chrony all loads. I've mic'd the cases before and after firing to see if they are stretching, Primers look fine and I'm on the 7-8th reload of this brass with no failures.

[ 09-28-2003, 22:23: Message edited by: Painted Horse ]

Kraky,

Using the same powder charge in a bullet without grooves versus one with grooves is going to produce less velocity using the bullet with grooves - same weight and BC bullet. The reason is there is less pressure using the bullet with grooves. You then add additional powder to increase velocity.

When I say "Grooves", not all manufacturers make bullets with grooves. Some are made with "bumps" not "grooves". Using a bullet made with "bumps" versus "grooves" may provide for less accuracy because you can't locate the bullet with "bumps" in close proximity to the lands.

Don