? For those who load ttsx bullets

[crapshoot]

...especially in multiple calibers.

Do they normally like some jump or do they like it relatively close to the lands?

Speaking in generalities. I know each barrel is different.

 

[hornet112]

Yes a lot of jump. Load them to the middle of the last ring on the bullet closes to the tip. Check Barnes website.
I've loaded a lot of these that way and the load development ends with the first load I try.

Pulled from Barnes Website

​

When loading a Barnes TSX, Tipped TSX or LRX bullet, your rifle may prefer a bullet jump of anywhere between .050” up to .250” or more. This distance off the lands (rifling), aka “jump” may be limited to the rifles throat length, magazine length and bullet length.
When selecting the cartridge overall length (COAL) we recommend starting with a minimum “jump” of .050” off of the lands. You can test different seating depths and find a “sweet spot” that your particular firearm prefers. We suggest working in at least .025” increments as follows seating the bullet deeper to allow a further jump. Your test plan could look something like this:
1st group- .050” jump
2nd group- .075” jump
3rd group- .100” jump
4th group- .125” jump
5th group- .150“ jump
6th group- * see below

*In rifles that have long throats you may be limited on how close you are able to get the bullet to the lands. In these instances, it is not uncommon to find the best accuracy with a jump of .200” or more.

This jump may possibly stay the same regardless of powder or charge weight within a given rifle. If preferred accuracy is not obtained, we certainly recommend trying another powder, for the powder type and charge greatly affects the overall accuracy of each individual firearm.

FYI- An accurate load requires a bullet with the proper consistent case neck tension which leads to more constant pressures and velocities.

 

[Sgt_Mike]

Not uncommon for Sierra MK's to do the same, of course that is throat dependent. Just my 2 cents YMMV

 

[crapshoot]

Sound like i need to set these back a bunch before even starting since I'm only. 005 off starting a ladder test. With the price and only 50 per box, i don't want to waste any.

 

[hornet112]

What caliber are you loading?

 

[crapshoot]

7mm rm

 

[hornet112]

Scan with your phone

 

[crapshoot]

Thanks. Already been there.
I set them all back another .045 for an overall .050 jump to start.

 

[DesertRam]

Barnes recommends .030-070", so I start at .050". Generally, that distance works great and I don't try anything else.

 

[DiRTY DOG]

Barnes recommends .030-070", so I start at .050". Generally, that distance works great and I don't try anything else.

This. Set it and forget it. TTSX like to jump at least 0.05" and be run fast, don't bother testing minimum loads.

 

[crapshoot]

I started at 65gr of h1000 and up to 69.5 in .5 increments.

 

[hm1996]

This. Set it and forget it. TTSX like to jump at least 0.05" and be run fast, don't bother testing minimum loads.

Probably why I could never get them to shoot in any of my rifles. Oh well, too soon old, too late smart.

 

[WyoBull]

I have all of mine set at .050 and they are all very accurate.

 

[K22-hornet]

I've loaded Barnes since about 1992, starting with the X, then XLC (blue coated), TSX and TTSX, in multiple calibers and multiple rifles.

The X and XLC were very sensitive to seating depth, and those I started deep.

For the TSX and TTSX, I start with the published COL and have not had to change COL to get excellent accuracy. A friend has two Hart customs, one in 243 the other in 300Win. With those rifles, we did adjust seating depth, but did not see any improvement so we're back to published COL.

One thing I did find, and DirtyDog already mentioned it, is the TSX and TTSX like to be pushed fast. I start at the highest powder charge and work back maybe 2 grs from Max.