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Discussion Starter · #1 ·
Trying to do some research here for a project/presentation we're working on and I need a little help.

Do you know the differences in speeds between the current SAAMI/SPC"I" factory ammo and some of the "Tac" ammo that was being sold by various manufacturers?

For example:

Current factory manufacturer X 85MPG is going Xfps from a X" barrel, and Company "Y" was offering a Tac version that went Yfps from a Y" barrel?


Thanks!
 

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I will check my old box of WC "SPCII barrel only", but I think it was published at 2700 for their 110 HPBT. They still say SPCII, but back down to 2600 for HPBT and 2500 for Accubond. My chrony said even less.

SSA's old ballistics, "Tactical" was for SPCII:
 

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Discussion Starter · #3 · (Edited)
I will check my old box of WC "SPCII barrel only", but I think it was published at 2700 for their 110 HPBT. They still say SPCII, but back down to 2600 for HPBT and 2500 for Accubond. My chrony said even less.

SSA's old ballistics, "Tactical" was for SPCII:
Extremely helpful, thank you. WC did a 95TTSX Tac load too I believe. I'll go digging for that.

Thanks!

Edit: the Current 96TTSX offering for WC in a 16" barrel is 2600fps.

This link says their old loads were 2850? Can anyone confirm that?

https://blog.hsoi.com/2011/03/29/wilson-combat-6-8-spc-factory-ammo-using-barnes-95gr-ttsx/
 

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Roughly 100fps...1 gr of powder.
Different powders avail over the last 8 years, should be a whole new ballgame especially if not confined to a short OAL.

Help him out here guys, favorite bullets favorite loads.
 

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Nosler SSA load - 110 Accubond

Factory SSA NON TAC load for 110 AB out of my 18" ARP TC was 2580fps.
My load is 28.7gr of AA2200 w/ CCI 41 and FC cases - 2662 fps.
 

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My 95 TTSX load of 30 grains AA2200 in SSA brass, with CCI41 primer has always given me 2860 FPS from a 16" barrel. WC used that load for some time, but apparently has reduced it.

I sent that load to Barnes and it tested around 56,500 PSI so take that FWIW.

The original SSA tactical 85 TSX load used a non-commercial St Mark's powder (not AA2200, but very similar). That load produced 3010 FPS in my 16" barrels but you can get very close to that with Re 7. A 29.5 grain load of Re 7 is about max, gives near 3000 FPS, and will be lightly compressed, in SSA brass.
 

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Discussion Starter · #7 ·
My 95 TTSX load of 30 grains AA2200 in SSA brass, with CCI41 primer has always given me 2860 FPS from a 16" barrel. WC used that load for some time, but apparently has reduced it.

I sent that load to Barnes and it tested around 56,500 PSI so take that FWIW.

The original SSA tactical 85 TSX load used a non-commercial St Mark's powder (not AA2200, but very similar). That load produced 3010 FPS in my 16" barrels but you can get very close to that with Re 7. A 29.5 grain load of Re 7 is about max, gives near 3000 FPS, and will be lightly compressed, in SSA brass.
Thanks Chris. I heard WC used 10X in their 95TTSX load - can you confirm?
 

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I have several boxes of older (pre-Nosler) SSA tac loads and non tac loads with a variety of their bullet offerings. All this ammo was purchased in 2013 or before. I don't have actual chrono data for all of it, but can give you what's written on the box. Would this help?
 

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Discussion Starter · #9 ·
I have several boxes of older (pre-Nosler) SSA tac loads and non tac loads with a variety of their bullet offerings. All this ammo was purchased in 2013 or before. I don't have actual chrono data for all of it, but can give you what's written on the box. Would this help?
Yes please, thanks.
 

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Well as it turns out, many of these boxes no longer have the ballistic info on them. Here is some data of what I have, however.

If I remember correct, all of their 6.8 data was gathered from a 16" barrel
SSA Nosler 110gr Accubond Tactical: 2630 fps (on box data). This same box was chrono'd out of my 12.5" ARP at 2521 fps at sea level.
SSA Nosler 110gr ProHunter Tactical: 2600 fps (on box data).
SSA Barnes 95gr TTSX Tactical: 2580 fps (on box data).
SSA 115 gr Open Tip Match standard pressure: 2478 fps (actual chrono data from 12.5" barrel at sea level).

Wilson Combat 95gr Barnes TTSX Tac: 2600 fps (on box data that was purchased in 2012).


Hope this helps, sorry I don't have more.
 

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Its hard to pin down an exact amount of velocity difference. From what I can tell, pressure is the determining factor, but since different powders have different pressure profiles, you can end up with a spc1 and an spc2 load at nearly the same velocity using the same bullet.

That said, my go-to load has always been 28.5 2200 in Rem brass, #34 primer, and the 110 Hornady HPBT w/c. That runs 2650 in my 18" ARP barrel. According to Harrison, that load runs at about 58K pressure.

The other load I use is the 90 GD (any lead core 90 actually) over 30.5 2200, #34 primer. That runs about 2850 fps in the same barrel.
 

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Thanks Chris. I heard WC used 10X in their 95TTSX load - can you confirm?
We used H322, Re10X, and then AA2200. I believe that the longest run they did with WC factory 95 TTSX was with AA2200.

I have also used RE7 with this bullet with excellent results. There is an accuracy node (as is for almost all 90-95 grain bullets) with Re 7 around 29-29.5 grains.

The only advantage with AA2200, is that the spherical powders are easier to compress with a more even pressure excursion at max case fill, than is the case with stick powder.
 

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Discussion Starter · #13 ·
We used H322, Re10X, and then AA2200. I believe that the longest run they did with WC factory 95 TTSX was with AA2200.

I have also used RE7 with this bullet with excellent results. There is an accuracy node (as is for almost all 90-95 grain bullets) with Re 7 around 29-29.5 grains.

The only advantage with AA2200, is that the spherical powders are easier to compress with a more even pressure excursion at max case fill, than is the case with stick powder.
Excellent; thanks HTR.
 
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