AR-Comp + Barnes 100 grain TTSX

[Jakal]

Ok need some help here.

Scoured the internet, have original Vol. 1 and 2 of the 6.5 reloading series but not the updated vol.2, membership to ammoguide.com and my search-fu is fairly strong.

I cannot find a good loadrange for AR-Comp and the 100 grain Barnes TTSX. Normally I don't ask for load info but cannot find a trustworthy source for this load.

I do see loads for the 120 grn TTSX and AR-Comp, just not seeing the 100 grn.

Thanks!

[SDguy]

AR - comp and bullets under 120 grain have not come past my radar either. you may need to move on.

http://barnesbullets.com/files/2017/...ndelForWeb.pdf Based on this link and my gut I would give Benchmark IMR8208 & RL 15 a serious look.

[Jakal]

Sdguy,

Thanks for the link. I do have that info and XBR and Benchmark.

Already have my XBR charge ladder built. Was wanting to test AR-Comp and XBR head to head with the TTSX. Not really wanting to use Benchmark but may have to give it a go.

[Djgrendel]

Send an email or call barnes. Hopefully they have done some testing with that powder, and just never posted it to their load data.

[6.8 klr]

AR-Comp. may be a little too slow of a burner for the 100 G. That is why there is a listing for the 120 G. and not the 100.....Just Sayin'

[Jakal]

I have started development on this. 16" Alexander Arms barrel.

1st CL: 1 round each of AR-Comp and the 100 grain TTSX. This was just to check how high of a charge I could go without pressure signs.

CCI 450
Virgin Lapua brass
AR-Comp
Barnes 100 grn TTSX
COAL 2.260

1st round: 26.5 grains 2529 fps
2nd round: 27 grains Not Captured
3rd round: 27.5 grains 2599 fps
4th round: 28 grains 2641 fps
5th round: 28.5 grains 2672 fps
I would not go above 28.5, would say this is MAX. Had powder coming up into the case neck past 28.5 grains.

All primers looked good. The 28.5 grain primer looked comparable to Factory 123 SST loads. Still rounded edge, no primer flow, cratering, or piercings.

The web only grew about .001 to 0015. To be expected with new brass.

Will try to upload pictures later.

[Kilco]

Those are actually damn fine velocities from a 16" pipe! I might have to try that myself! How was accuracy?

[LRRPF52]

I have started development on this. 16" Alexander Arms barrel.

1st CL: 1 round each of AR-Comp and the 100 grain TTSX. This was just to check how high of a charge I could go without pressure signs.

CCI 450
Virgin Lapua brass
AR-Comp
Barnes 100 grn TTSX
COAL 2.260

1st round: 26.5 grains 2529 fps
2nd round: 27 grains Not Captured
3rd round: 27.5 grains 2599 fps
4th round: 28 grains 2641 fps
5th round: 28.5 grains 2672 fps
I would not go above 28.5, would say this is MAX. Had powder coming up into the case neck past 28.5 grains.

All primers looked good. The 28.5 grain primer looked comparable to Factory 123 SST loads. Still rounded edge, no primer flow, cratering, or piercings.

The web only grew about .001 to 0015. To be expected with new brass.

Will try to upload pictures later.

Looks really similar to how things went for me with 8208XBR under a 100gr NBT.

With a practical 30gr case capacity average, you might want to use 1% case capacity increments and go with .3gr rather than .5gr, especially as you get up there, since a lot can happen with .5gr in this cartridge.

[Jakal]

LRRPF52,

Yeah, the .5 grain was just to get my MAX range.

2nd CL: 5 rounds each. I have these ready to shoot, will report back with LabRadar results once complete.
27.6
27.9
28.2
28.5

Kilco,

I just shot one round of each, accuracy will be determined during my second and third charge ladders. I think velocities are well within range and are better than I thought they would be.

I am actually running these 4 loads. Found load info for all but the TTSX/AR-Comp, so here we are!

100 grn TTSX / AR-Comp
100 grn TTSX / XBR 8208

129 grn ABLR / AR-Comp
129 grn ABLR / XBR 8208

[Kilco]

Do you have any CFE223? I'm wondering if the increased drag of the 100 TTSX will let CFE223 work it's magic and see what kind of velocities it produces.

[Jakal]

Yes CFE223 is in the powder stable. That is up next after ARC & XBR. TAC may be up after that, pending an accurate load from the previous. Looking to work with more temp stable powders (extruded) as this load will be for my dedicated nightvision upper. So this will be used in the colder temps.

[ActionDiver]

This is great! I'm eager to see where this goes. Any specific big game you plan to hunt with your final load?

[Jakal]

Mainly this load will be for coyotes out to about 300 yards w/ an Armasight Nemesis scope. If any of these loads work out, I may tweak them for my Lilja pistol. At that point Indiana Whitetail will be on the list!

2 years ago in a half hour, I had 4 big coyotes cross in front of me at about 200 yards. I was using a 458 Socom and didn't want to launch a 300 grn TTSX that far, so now after deer hunting, switch my upper and ammo and do a little night coyote hunting.

[Bobke]

Why not just use the 100gr TTSX for both deer and coyotes? With the right load, should be good to 300 for either.

[ActionDiver]

Very cool. I have seen where people are considering using the same bullet for elk inside of 300 yards.