Barnes tsx & ttsx COL and seating

[TheSwede]

Im about to load 150 grain ttsx in .30-06. Barnes recommend using their tsx bullet data for the ttsx bullet (ttsx bullet have a plastic tip making the bullet longer than the tsx). BUT i dont know where to seat the bullet becouse the TTSX is longer than the tsx. COL for tsx bullet is 3.2 inch, if im going with that COL I have to seat the ttsx bullet deeper and that means I probebly cant use the max-data for the tsx becouse the ttsx bullet steal space...

 

[TNBilly]

IIRC Barnes recommends setting OAL at .050 off the lands for starters. I would check what that gives me a length that works all right in you r individual rifle then go with it. I would only start shorter if it'll cause feeding problems. If you're starting 10% down to start that will cover most problems volume/length might cause.

 

[Muddydogs]

I am loading the same bullet in a 3006 using TSX data, work up your load and you will be fine. As for COAL I have no idea what mine is. I measured the max magazine length and the max Comparator length where the bullet touches the rifling and adjusted accordingly.

 

[steve4102]

Reducing OAL in a bottle necked rifle round like the 30-06 is not going to "steal space" and cause an increase in pressure. If fact reducing OAL increases the "jump" to the lands thus Reducing pressure, not increasing it.

Seat your bullets to whatever works for you and your rifle.

 

[TheSwede]

Thanks alot! Great forum with great answeres.

 

[M7025-06]

I load the TSX for 2 different calibers (280 Rem & 25-06) and found my best accuracy with these bullets seated pretty darn deep (0.100'' off the lands which puts the top ring of the bullet right at the case mouth) with very good velocities.

My advice would be start them 0.05'' off the lands and keep seating them a little deeper until you find the accuracy you want.

 

[hatwerinrednek]

as said in the other post, make sure your at least the distance barnes recommends you be from the lands and make sure the load has enough room to work in your mag and your bullet can be seated anywhere in between those two points. just remember bullets closer to the lands produce higher velocity and higher pressure and when seated farther away they produce less. i used to worry about wringing out every bit of speed i could but the velocity gain isnt that much. the big idea is to get them close to the lands to improve accuracy but i have a 7 mag that actually shoots better seated to the book specs. my opinion,,for what its worth.

 

[scottishkat]

I have tried numerous bullet COAL with the Barnes TSX bullets. My best luck has been obtained in 3 different rifles when I apply a slight crimp in the last channel. I have not been worrying about getting close to lans and success has been excellent especially with my 257 WBY. I started loading them short and crimped and have not looked back. Did'nt care for the appearence of loaded rounds with all the channels exposed.

Make sure you get some Boretech eliminator and clean the rifle after 15 rounds or so depending on the rifle the copper fouling was my biggest issue with the TSX and TTSX and accuracy is affected badly by it.

 

[TheSwede]

Ok thanks for sharing the fouling problem. Ive heard it before but somehow it seems like its different from barrel to barrel.

 

[TheSwede]

Ok!