Trying H4350 in the 6.5CM

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Anonymous

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So I'm finally trying some vaunted H4350 in my 6.5CM...

Starting with a middling load of 41gr behind a 130 AccuBond. Book data gives it 2750fps in a 24" barrel, any ideas on what I might expect out of an 18"?
 
Code: 
Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 47.584 grain H2O = 3.090 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 18.0 inch = 457.2 mm
Powder             : Hodgdon H4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   86    36.90   2230    1435   35875  10841     88.5    1.264
-09.0   87    37.31   2255    1468   36942  11002     89.1    1.248
-08.0   88    37.72   2280    1500   38046  11161     89.7    1.230
-07.0   89    38.13   2305    1533   39184  11319     90.2    1.213
-06.0   90    38.54   2330    1567   40350  11475     90.8    1.196
-05.0   91    38.95   2355    1601   41546  11629     91.3    1.179
-04.0   92    39.36   2380    1635   42772  11782     91.8    1.162
-03.0   93    39.77   2405    1670   44029  11932     92.3    1.146
-02.0   94    40.18   2430    1705   45321  12080     92.8    1.130
-01.0   95    40.59   2456    1741   46651  12226     93.2    1.115
+00.0   96    41.00   2481    1776   48020  12369     93.7    1.099
+01.0   96    41.41   2506    1813   49430  12510     94.1    1.084
+02.0   97    41.82   2531    1850   50881  12648     94.6    1.069
+03.0   98    42.23   2557    1887   52376  12783     95.0    1.055
+04.0   99    42.64   2582    1924   53915  12916     95.4    1.040  ! Near Maximum !
+05.0  100    43.05   2607    1962   55501  13046     95.7    1.026  ! Near Maximum !

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     96    41.00   2614    1972   56558  12682     98.4    1.019  ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    41.00   2317    1550   39682  11548     85.8    1.200

For sure, that is a mild load. You certainly have room to expand your charge, according to QL.

Code: 
Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 47.584 grain H2O = 3.090 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 18.0 inch = 457.2 mm
Powder             : Hodgdon H4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   94    40.14   2428    1702   45193  12065     92.7    1.132
-09.0   95    40.59   2455    1740   46638  12224     93.2    1.115
-08.0   96    41.03   2483    1779   48129  12380     93.7    1.098
-07.0   97    41.48   2510    1819   49667  12533     94.2    1.082
-06.0   98    41.92   2538    1859   51256  12683     94.7    1.065
-05.0   99    42.37   2565    1900   52896  12829     95.1    1.050
-04.0  100    42.82   2593    1941   54590  12972     95.5    1.034  ! Near Maximum !
-03.0  101    43.26   2620    1982   56339  13112     95.9    1.019  ! Near Maximum !
-02.0  102    43.71   2648    2024   58147  13247     96.3    1.004  ! Near Maximum !
-01.0  103    44.15   2675    2066   60014  13379     96.7    0.989  ! Near Maximum !
+00.0  104    44.60   2703    2109   61943  13507     97.0    0.975  ! Near Maximum !
+01.0  105    45.05   2731    2152   63938  13630     97.4    0.960  !DANGEROUS LOAD-DO NOT USE!
+02.0  106    45.49   2758    2196   66000  13750     97.7    0.946  !DANGEROUS LOAD-DO NOT USE!
+03.0  107    45.94   2786    2240   68132  13865     98.0    0.933  !DANGEROUS LOAD-DO NOT USE!
+04.0  108    46.38   2813    2285   70338  13975     98.3    0.919  !DANGEROUS LOAD-DO NOT USE!
+05.0  109    46.83   2841    2330   72621  14080     98.5    0.906  !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    104    44.60   2829    2311   72903  13477     99.8    0.906  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    104    44.60   2539    1861   51185  12930     90.6    1.062
 
Thanks!

at 2483fps....that's certainly no speed demon. My guess is the 4350 is better with 140+gr bullets.
 
It does appear that it would work reasonably well with 140 grain AB.

Code: 
Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 46.918 grain H2O = 3.046 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 18.0 inch = 457.2 mm
Powder             : Hodgdon H4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   92    38.97   2344    1709   45146  11928     93.8    1.171
-09.0   93    39.40   2370    1747   46564  12080     94.3    1.154
-08.0   94    39.84   2396    1785   48026  12228     94.7    1.136
-07.0   95    40.27   2423    1824   49534  12374     95.1    1.120
-06.0   96    40.70   2449    1864   51089  12517     95.6    1.103
-05.0   97    41.14   2475    1904   52693  12657     96.0    1.087
-04.0   98    41.57   2501    1944   54348  12792     96.4    1.071  ! Near Maximum !
-03.0   99    42.00   2527    1985   56055  12925     96.7    1.056  ! Near Maximum !
-02.0  100    42.43   2553    2026   57817  13054     97.1    1.041  ! Near Maximum !
-01.0  101    42.87   2579    2067   59636  13179     97.4    1.026  ! Near Maximum !
+00.0  102    43.30   2605    2109   61513  13299     97.7    1.011  ! Near Maximum !
+01.0  103    43.73   2631    2152   63452  13416     98.0    0.996  !DANGEROUS LOAD-DO NOT USE!
+02.0  104    44.17   2657    2194   65454  13528     98.3    0.982  !DANGEROUS LOAD-DO NOT USE!
+03.0  105    44.60   2683    2238   67522  13636     98.5    0.968  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    45.03   2709    2281   69659  13740     98.7    0.954  !DANGEROUS LOAD-DO NOT USE!
+05.0  107    45.47   2735    2325   71867  13839     99.0    0.941  !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    102    43.30   2721    2302   72255  13180    100.0    0.941  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    43.30   2451    1868   50960  12814     91.7    1.101
 
Wasn't H4350 recommended by Hornady with the first commercial 6.5 Creedmore loads? As I recall the loading data was even printed on the ammo box.

Could be wrong.

Guy
 
Back from the range....it's easy to see why the Creedmoor guys love H4350. This is literally the "Nosler Most accurate load" from Nosler 8 with this powder and bullet combo. No fiddling, just a straight book load. This rifle is not some chassis gun either- it's a 5 pound Barrett Fieldcraft with a SWFA 10x scope.
 

Attachments

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Guy Miner":2ivyke42 said:
Wasn't H4350 recommended by Hornady with the first commercial 6.5 Creedmore loads? As I recall the loading data was even printed on the ammo box.

Could be wrong.

Guy
Click to expand...

I believe you're right. As easy as H4350 meters, it's going to be a favorite.
 
Hodge, I came from the range a few mornings ago, used the 6.5 Creedmoor - 42 grains of H4350- 140 grain bullets and 5 shots @ 300 yards with 5 to 10 mph headwind. I cannot explain the flyer and H4350 is indeed my go to powder for the 6.5 Creed.

LNzdXMBl.png
 
More love for H4350 from the range....this time with the 143ELD-X bullet.
 

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That’s some amazing shooting. I’ve been running 17 and 26 in my 6.5... H4350 is pretty danged good. I’m a bit of a speed demon so the 17 usually gets a nod. 26 with the 147’s.




 
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