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Thread: New 308W 110 and 130 grain TTSX loading data from Barnes recently published.

  1. #1

    New 308W 110 and 130 grain TTSX loading data from Barnes recently published.

    Barnes have new reloading data for the 110 and 130grain TTSX in .308W on their website. It differs slightly from the data they emailed to me and I posted here earlier.

    130grain COAL now down another 0.050" to 2.735"

    Alan
    Last edited by Alantoo; 17-11-2016 at 01:34.

  2. #2
    Much obliged!

  3. #3
    I may have another go with the Barnes then as the 130 wouldn't group at all in any powder weight so maybe the new shorter length will help.

  4. #4
    Quote Originally Posted by nun_hunter View Post
    I may have another go with the Barnes then as the 130 wouldn't group at all in any powder weight so maybe the new shorter length will help.
    I am still going around and around with them.

    I had some 5 shot groups between 0.6" and 0.7" with 2.8 grammes (43.2grains) of H335 and 0.8" with 3.08 grammes (47.5 grains) I went with 3.08 load in order to keep the speed high (it was 3007 to 3024fps)

    I have subsequently had occasionally larger 5 shot groups averaging 1.4" with that load which although fine for deer at the range I am shooting has been irritating me, so my next trip to the range will be with some of the 2.8 grammes loads... which are still running 2875fps-ish so quite fast enough for my distances.

    I have also just picked up a tub of N135...could not find any more H335... to try with both the Barnes and the 125g GMX.

    Alan

  5. #5
    Attachment 76415Attachment 76416Attachment 76417Attachment 76418

    Can't work out any of the groups that I should try again at the new COAL or abandon the Xterminator and try a new powder!! It's a 243 case for size reference but 308 that I was shooting.

  6. #6
    Quote Originally Posted by nun_hunter View Post
    Attachment 76415Attachment 76416Attachment 76417Attachment 76418

    Can't work out any of the groups that I should try again at the new COAL or abandon the Xterminator and try a new powder!! It's a 243 case for size reference but 308 that I was shooting.
    I had the same sort of groups from my .222 with the 45gr TSX and Xterminator at 2.130" recommended COAL. I ended up trying 2.170" COAL (roughly .020" from rifling) which improved groups quite a bit.

  7. #7
    Varget works for me behind 130grn 308 TTSX. I use a top end charge weight & big jump to the lands & get over 3000ft/sec with good groups.
    Ian

  8. #8
    Quote Originally Posted by nun_hunter View Post

    Can't work out any of the groups that I should try again at the new COAL or abandon the Xterminator and try a new powder!! It's a 243 case for size reference but 308 that I was shooting.
    What with factoring in the odd flyer and the jerk on the end of the trigger, analysing these things is really problematic! I have come to the conclusion that on a good day I am about 0.5MOA capable and the rifle and ammunition is about 0.5MOA so if I am to the right and the rifle is to the right it will end up 1" to the right and if both to the left it will be 1" to the left...most will come somewhere within the 0.5" from POI. But the group size is likely to be up to 2".

    Great article here... http://www.rifleman.org.uk/Fuller_group_diagnosis.htm

    And here...http://www.6mmbr.com/verticaltips.html


    These were my load development shots at the tunnel range.
    Click image for larger version. 

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    But the next two targets were off quad sticks and seemed to be following a vertical stringing pattern...Barrel warming up?..jerk on the trigger being consistently inconsistent?

    Click image for larger version. 

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    The last seemed to confirm the barrel warm up because the cold barrel first shots on 5 consecutive days were okay.

    Click image for larger version. 

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    Be interesting to see what the new COAL and the slower speed does.

    Alan
    Last edited by Alantoo; 17-11-2016 at 12:28.

  9. #9
    I think I'll try some of the lower charges and vary the seating depth. I had read that article before and although very good and explained things very well it gave me less confidence in my ability! Which probably isn't such a bad thing.

  10. #10
    I tried some 125gr SST through my blaser and had similar results to nun hunter. I loaded to 2.8 oal. I believe a larger jump will benefit from reading this information. I will pick up TTSX if I can find them in stock locally.
    Last edited by scotch_egg; 17-11-2016 at 17:17.
    "If you can't see it, you can't shoot it"

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