Re: new here thought id post a few pics of my rifles
Yep, the number of grooves does vary by the bullet length.
The original TSX concept was adding three grooves to the bearing surface to reduce the surface area...cuts down on the fouling quite a bit. That's where the triple shock part of the name comes from and all of the original bullets released in the TSX lineup had three grooves.
As they went through the whole lineup replacing X with TSX, they found that they needed to add either more or less grooves to the bullet according to the bearing surface length.
The nose profiles vary by caliber and weight as well. Some are secant ogive, some tangent ogive, and some hybrid, depending on the weight per diameter. The 115gr X and the 115gr TSX have the same profile, the TSX is longer though due to the weight displaced from the grooves.
The copper alloy is unchanged from X to TSX.
Some guys claimed the alloy was changed and that the new TSX was a harder alloy and that is what was reducing fouling, but it is just the reduced surface area from the grooves.
I visited with Dan and even Randy himself from Barnes several years ago and got this straight from them.
Originally, I started out with a complaint about excessive fouling I was having when I switched a .270 load from X to TSX...naturally I was kinda worried because the TSX was supposed to have less fouling. Wound up swapping about a dozen emails and a few phone calls getting to the bottom of the problem.
I've just been so totally impressed with the service I got from them that I'm a die-hard fan. Yeah, they're spendy (like all premium bullets) but they work fantastic.
Last edited by Bindernut; 09-13-2011 at 05:57 AM..