Load help for 129 sst's in 6.5 Creedmoor

jr1968 · Dec 22, 2017

Could someone recommend a good load with 129gr. sst's ?

Powders I have on hand is IMR 4350, H4350 and Varget.

Thanks,
jr1968.

Cleveland48 · Dec 22, 2017

I tried them back during the summer with varget. I honestly never got a good group. Don’t know what it was about my combination, but my Howa did not like them. I tried them from .010” off the lands to .100” off the lands with no success. I plan on trying again this summer with imr 4350 and RL16.

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jr1968 · Dec 22, 2017

Could someone run a QL. for me please using

Hornady brass
IMR 4350
CCI-200's
129 gr Hornady sst's
22 in. barrel

Thanks,
jr1968.

TackDriver284 · Dec 22, 2017

Cartridge : 6.5 Creedmoor Hornady
Bullet : .264, 129, Hornady SST InterLock 26202
Useable Case Capaci: 47.908 grain H2O = 3.111 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4350

Code:

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   80    35.20   2257    1459   31442   8335     88.8    1.485
-18.0   82    36.08   2311    1530   33485   8604     90.0    1.446
-16.0   84    36.96   2365    1603   35657   8866     91.1    1.408
-14.0   86    37.84   2420    1677   37968   9121     92.2    1.368
-12.0   88    38.72   2474    1754   40423   9368     93.2    1.329
-10.0   90    39.60   2529    1832   43009   9606     94.2    1.291
-08.0   92    40.48   2583    1912   45747   9835     95.1    1.254
-06.0   94    41.36   2638    1993   48659  10054     95.9    1.218
-04.0   96    42.24   2692    2076   51757  10261     96.6    1.184
-02.0   98    43.12   2747    2161   55056  10457     97.3    1.151  ! Near Maximum !
+00.0  100    44.00   2801    2247   58570  10639     97.9    1.119  ! Near Maximum !
+02.0  102    44.88   2855    2335   62316  10808     98.4    1.088  ! Near Maximum !
+04.0  104    45.76   2909    2424   66313  10963     98.9    1.058  !DANGEROUS LOAD-DO NOT USE!
+06.0  106    46.64   2963    2514   70581  11102     99.3    1.029  !DANGEROUS LOAD-DO NOT USE!
+08.0  108    47.52   3016    2606   75145  11225     99.6    1.001  !DANGEROUS LOAD-DO NOT USE!
+10.0  110    48.40   3070    2699   80029  11332     99.8    0.975  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    100    44.00   2923    2447   68925  10492    100.0    1.043  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    100    44.00   2638    1994   48408  10298     92.1    1.217

jr1968 · Dec 22, 2017

Thank you so much, TackDriver.

jr.1968

35 Whelen · Dec 28, 2017

My cousin shoots 44gr in his with the 129gr SST and he swears it will knock a deer silly.
He has shot a half dozen or so with his and he says its a honey of a deer load.

Cleveland48 · Dec 28, 2017

Those SST are a fine Deer load. They shed a lot of energy inside the Deer. I’ve seen a bunch of Deer just DRT with various calibers with the SST.

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35 Whelen · Dec 29, 2017

Amen to that brother! That is exactly what they do! :wink:
Plus they still come in a box of 100! :mrgreen:

Cleveland48 · Dec 29, 2017

35 Whelen":xzvntlpm said:
Amen to that brother! That is exactly what they do! :wink:
Plus they still come in a box of 100! :mrgreen:

Yep! I like it when bullets come a 100 to a box! Lol. I bought some GMX to try last summer didn’t realize they only came at 50 a box until I got home [emoji57].

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