3,050 fps in a 6.5 Creedmore

[TackDriver284]

Ran out of H4350, so will the IMR4350 work in close relation as the H4350? I know its a sensitive powder as well, but I am in Texas and its hot as hell so it won't be much of a problem.

I have a Surgeon 591 6.5 Creedmore with a Shilen Match 30 inch barrel #7 taper, A3 stock and Basix trigger, Nightforce ATACR 5.5-25 and trying some ladder tests. I went to try the RL 17 today, 39.5 to 43 grains and pushed the 130 Berger Hybrid to 3,050 fps with the 30 inch barrel. No pressure signs at all, and I DON'T see any diminishing returns at all or any decreased velocities, each grain that I added pushed the 130 Berger an extra 60-75 fps but loads starts opening up when going real fast over 41.5 grains. I stopped at 43 grains. That is damn fast, and faster than my 6.5 x 284. I see some promising loads from 39.5 to 41 grains with .5 moa clusters from 2780 to 2875 fps. Speed is not what I am chasing, its accuracy. But I wanted the H4350 and no one has them in stock. Does anyone know who has them?

BTW, I want to get the Quikload software, which version is currently used? I like to try it. Please send me the link. Thanks

 

[jimbires]

http://www.neconos.com/details3.htm

the link to quickload

 

[TackDriver284]

http://www.neconos.com/details3.htm

the link to quickload

Thanks.

 

[Wincheringen]

You may not be seeing pressure signs, velocity is your pressure indicator. I had good accuracy with RL17 but not as good as Ramshot Hunter.

 

[TackDriver284]

You may not be seeing pressure signs, velocity is your pressure indicator. I had good accuracy with RL17 but not as good as Ramshot Hunter.

How is velocity seen in terms of high pressure signs? Does high pressure signs indicate when velocity stops climbing in speed ?

 

[Wyo7200]

R17 produces faster velocities at lower pressures when compared to H4350. It's been about 100fps faster than h4350 in my 6.5 creed and .260 rem.

 

[Dwh7271]

If you have some H4831 around you might be pleased with the accuracy especially with the 30" barrel.
You'll probably give up a little speed versus the 17 though.

 

[Wincheringen]

You may not be seeing pressure signs, velocity is your pressure indicator. I had good accuracy with RL17 but not as good as Ramshot Hunter.

How is velocity seen in terms of high pressure signs? Does high pressure signs indicate when velocity stops climbing in speed ?

If you're getting higher velocity than a pressure tested load then that is the pressure sign. If you're using Hornady brass it already has a short life, I haven't gotten to my Nosler brass yet and don't know if it has better life or not.

 

[Wyo7200]

just for the heck of it. I am not sure what velocity goes with what powder charge, but I'd say this is pretty close. That extra 6" of barrel really brings out the speed of that powder.

Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 130, Berger Hunt VLD #26503
Useable Case Capaci: 45.421 grain H2O = 2.949 cm³
Cartridge O.A.L. L6: 2.690 inch = 68.33 mm
Barrel Length      : 30.0 inch = 762.0 mm
Powder             : Alliant Reloder-17

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   76    33.20   2434    1710   27890   6268     96.7    1.828
-18.0   77    34.03   2491    1791   29692   6424     97.5    1.781
-16.0   79    34.86   2548    1874   31610   6568     98.2    1.735
-14.0   81    35.69   2604    1958   33655   6700     98.8    1.691
-12.0   83    36.52   2660    2043   35834   6820     99.3    1.648
-10.0   85    37.35   2716    2129   38158   6925     99.6    1.604
-08.0   87    38.18   2771    2217   40637   7017     99.9    1.559
-06.0   89    39.01   2826    2305   43284   7094    100.0    1.515
-04.0   91    39.84   2879    2393   46112   7158    100.0    1.474
-02.0   93    40.67   2933    2482   49137   7219    100.0    1.433
+00.0   94    41.50   2985    2572   52373   7279    100.0    1.395
+02.0   96    42.33   3037    2663   55837   7336    100.0    1.357  ! Near Maximum !
+04.0   98    43.16   3089    2754   59552   7391    100.0    1.321  ! Near Maximum !
+06.0  100    43.99   3140    2846   63539   7444    100.0    1.286  !DANGEROUS LOAD-DO NOT USE!
+08.0  102    44.82   3190    2938   67822   7495    100.0    1.253  !DANGEROUS LOAD-DO NOT USE!
+10.0  104    45.65   3241    3032   72431   7543    100.0    1.221  !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     94    41.50   3089    2755   63883   6968    100.0    1.298  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     94    41.50   2823    2300   42454   7572     98.6    1.524

 

[TackDriver284]

just for the heck of it. I am not sure what velocity goes with what powder charge, but I'd say this is pretty close. That extra 6" of barrel really brings out the speed of that powder.

Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 130, Berger Hunt VLD #26503
Useable Case Capaci: 45.421 grain H2O = 2.949 cm³
Cartridge O.A.L. L6: 2.690 inch = 68.33 mm
Barrel Length      : 30.0 inch = 762.0 mm
Powder             : Alliant Reloder-17

Thanks for checking, glad I stopped at 43 grains thand ough, but isn't the case weight with water at 209.1 grains minus the empty case weight at a weight of 155.2 grains for the final weight of H20 as 53.9 grains? Looks like you have 45.421 grains up there. My OAL length is 2.794. Correct me if I am wrong about the H20 weight. I just ordered the QL the other day and learning this stuff.

Does anyone have a figure if I were to use IMR 4350? It has about the same burn rate as H4350 but I ran out of H4350 and no one has it in stock. Wanted to see how the OBT was with it. Someone said it is 43.2 grains of IMR 4350 with a 130 VLD. He only has the old version 3.6 but not the 3.9 version to check with the new 130 Hybrids. 3.6 Version does not list the Hybrids.

 

[Wyo7200]

The case weight in the results is less the amount of bullet that is seated- the 53.9 gr is entered into one of the (many) parameters. To put it another way, QL calculates the capacity (the 45.4 value) by subtracting the volume of the seated bullet from the measured case (53.9) to get the final h2o capacity you see in that table.

I used imr 4350 with some 123's to fireform some converted .308 lapua cases and was amazed at the accuracy I got with all the inconsistencies I had. It was a mellow load 39.6gr just to blow the shoulder out. I'll check my my books but it is within that burn rate range of H4350.

 

[TackDriver284]

If you have some H4831 around you might be pleased with the accuracy especially with the 30" barrel.
You'll probably give up a little speed versus the 17 though.

The extruded or the SC?

 

[FOTIS]

RL-17 is your huckleberry!

 

[muleman]

42gr of RL17 and 129grABLRs are running 2950fps out of a 26" tube. My variable are different than yours but this load is hitting about 58kpsi according to QL when I've adjusted for case capacity, oal and burn rate. ihave another load with H4350 at 44.5gr it's a little slower but just as accurate. Pressure to pressure H4350 is about 100fps slower for me.

Scott

 

[Horsethief]

I'm getting 3015fps at the muzzle with 46.5gn of Superformance under a 130gn Swift Scirocco II. The Swift manual shows 47.5gn as the max load. The load I'm using is sub-MOA @ 100 yards and sub Minute of Deer (twice) at 390 yards.