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Quickload Request 6.5x55 vs 6.5 Creedmoor #14289830 11/18/19
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PaulBarnard Offline OP
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Can anyone with Quickload run something for me?

H4350
22" Barrel
130 grain bullets
Make it for Sea Level if that matters

I had someone do this for me a few years back on one of the forums and for the life of me I cannot find it.

Thanks

300 BP

Re: Quickload Request 6.5x55 vs 6.5 Creedmoor [Re: PaulBarnard] #14293751 11/19/19
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Azar Offline
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You need to be more specific. Are you asking for QL results for BOTH 6.5x55 and 6.5 Creedmoor with every 130 grain bullet in it's database?

Because there is no way anyone is going to run that, lol.

The more data you can provide, the better. Actual measurements of bullets (length) & cases (capacity) is important if you want anything resembling accurate results. QuickLOAD's default values are often a bit off (sometimes quite a bit off).

Cartridge:
Cartridge over all length:
Bullet touching/jammed into lands at C.O.A.L. (Y/N):
Bullet:
Measured bullet length:
Powder type & charge weight:
Case length:
Case water capacity (measured level to case mouth):
Barrel length:
Barrel twist rate:


“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.”
― Patrick Rothfuss, The Wise Man's Fear
Re: Quickload Request 6.5x55 vs 6.5 Creedmoor [Re: PaulBarnard] #14296550 11/20/19
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PaulBarnard Offline OP
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Thanks for clearing me up! I want to do a side by side comparison between the Creed and Sweed with H4350 over the span of charges from minimum to beyond max.

The purpose is to give as apple to apple comparison as possible for the two rounds. I am most curious how they perform at fills between 96-100%. Let me give it a whirl here.

COL 3.15 Swede 2.8 Creed

Case length 2.15 Swede 1.92 Creed

130 gr Nosler Accubond 2/1000 off the lands

Bullet length 1.32

Case capacity 57.9 Swede 52.5 Creed

Barrel 24" 8 twist in both.


If I have overlooked anything, just equalize it as much as possible between the two.

Thanks!

Re: Quickload Request 6.5x55 vs 6.5 Creedmoor [Re: PaulBarnard] #14302637 11/22/19
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Azar Offline
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Are you looking for SAAMI pressures on both rounds or are you hot-rodding the Swede to Creedmoor pressures?

Also, 6.5x55 trim-to-length is 2.155". Did you intend to list that or do you actually want 2.150" for the case length?


“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.”
― Patrick Rothfuss, The Wise Man's Fear
Re: Quickload Request 6.5x55 vs 6.5 Creedmoor [Re: PaulBarnard] #14302700 11/22/19
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Azar Offline
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With how close to the lands you are loading, I treated it as if you are touching the lands (i.e. adding 7,200 PSI to the shot start initiation pressure). The recommended max load is 2.5g below Hodgdon's recommended max. However, the predicted velocity between the two corresponds closely. Don't take the charge weights or the predicted velocity / pressure from QuickLOAD as gospel. It's a calculated guess.

At Creedmoor equivalent pressure level it looks like you could gain about 160 FPS.

USE THIS DATA AT YOUR OWN RISK.

Code
Cartridge          : 6.5 x 55 Swedish
Bullet             : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 53.618 grain H2O = 3.481 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.136% 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

-11.4   81    39.00   2499    1802   43525   8938     95.6    1.311
-10.2   82    39.50   2526    1842   44654   9053     96.0    1.297
-09.1   83    40.00   2554    1883   45820   9166     96.3    1.283
-08.0   84    40.50   2581    1923   47022   9277     96.7    1.270  ! Near Maximum !
-06.8   85    41.00   2609    1964   48263   9386     97.0    1.256  ! Near Maximum !
-05.7   86    41.50   2636    2006   49543   9492     97.3    1.243  ! Near Maximum !
-04.5   87    42.00   2663    2047   50864   9596     97.6    1.229  ! Near Maximum !
-03.4   88    42.50   2690    2090   52227   9697     97.9    1.216  ! Near Maximum !
-02.3   89    43.00   2718    2132   53632   9796     98.1    1.203  ! Near Maximum !
-01.1   90    43.50   2745    2175   55081   9892     98.4    1.191  !DANGEROUS LOAD-DO NOT USE!
+00.0   91    44.00   2772    2218   56576   9984     98.6    1.178  !DANGEROUS LOAD-DO NOT USE!
+01.1   92    44.50   2799    2261   58118  10074     98.8    1.165  !DANGEROUS LOAD-DO NOT USE!
+02.3   93    45.00   2826    2305   59709  10161     99.0    1.153  !DANGEROUS LOAD-DO NOT USE!
+03.4   94    45.50   2853    2349   61349  10244     99.2    1.140  !DANGEROUS LOAD-DO NOT USE!
+04.5   95    46.00   2880    2394   63042  10325     99.4    1.128  !DANGEROUS LOAD-DO NOT USE!
+05.7   96    46.50   2907    2439   64788  10401     99.5    1.116  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     91    44.00   2830    2312   60400   9940     99.7    1.149  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     91    44.00   2705    2112   52828   9922     96.7    1.210  ! Near Maximum !

Last edited by Azar; 11/22/19.

“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.”
― Patrick Rothfuss, The Wise Man's Fear
Alpha

Re: Quickload Request 6.5x55 vs 6.5 Creedmoor [Re: PaulBarnard] #14302716 11/22/19
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Posts: 1,634
Azar Offline
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Here's the 6.5 Creedmoor. Again, with how close to the lands you are I increased the shot start initiation pressure to be "touching the lands" (i.e. add 7,200 PSI). Looks like 41.5g is recommended max for 2,787 FPS. This is still about 2g higher than what's recommended by Hodgdon.

USE THIS DATA AT YOUR OWN RISK.

Code
Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 46.579 grain H2O = 3.024 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.22% 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

-12.2   86    36.00   2457    1743   44011   7956     94.1    1.312
-11.0   87    36.50   2487    1786   45342   8071     94.6    1.296
-09.8   88    37.00   2517    1829   46713   8185     95.0    1.280
-08.5   89    37.50   2547    1873   48127   8296     95.4    1.265
-07.3   90    38.00   2577    1918   49585   8404     95.9    1.249
-06.1   92    38.50   2607    1962   51089   8511     96.2    1.234
-04.9   93    39.00   2637    2008   52640   8614     96.6    1.219
-03.7   94    39.50   2667    2054   54241   8715     97.0    1.205  ! Near Maximum !
-02.4   95    40.00   2697    2100   55897   8813     97.3    1.190  ! Near Maximum !
-01.2   96    40.50   2727    2147   57616   8908     97.6    1.176  ! Near Maximum !
+00.0   98    41.00   2757    2194   59399   9000     97.9    1.161  ! Near Maximum !
+01.2   99    41.50   2787    2242   61250   9089     98.2    1.147  ! Near Maximum !
+02.4  100    42.00   2817    2290   63172   9174     98.5    1.134  !DANGEROUS LOAD-DO NOT USE!
+03.7  101    42.50   2846    2339   65167   9256     98.7    1.120  !DANGEROUS LOAD-DO NOT USE!
+04.9  102    43.00   2876    2388   67238   9334     99.0    1.107  !DANGEROUS LOAD-DO NOT USE!
+06.1  104    43.50   2906    2437   69389   9408     99.2    1.093  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     98    41.00   2818    2292   63605   8985     99.4    1.132  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     98    41.00   2688    2085   55210   8919     95.7    1.194  ! Near Maximum !


“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.”
― Patrick Rothfuss, The Wise Man's Fear
Re: Quickload Request 6.5x55 vs 6.5 Creedmoor [Re: Azar] #14304796 11/23/19
Joined: Oct 2004
Posts: 6,763
PaulBarnard Offline OP
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Originally Posted by Azar
Here's the 6.5 Creedmoor. Again, with how close to the lands you are I increased the shot start initiation pressure to be "touching the lands" (i.e. add 7,200 PSI). Looks like 41.5g is recommended max for 2,787 FPS. This is still about 2g higher than what's recommended by Hodgdon.

USE THIS DATA AT YOUR OWN RISK.

Code
Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 46.579 grain H2O = 3.024 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.22% 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

-12.2   86    36.00   2457    1743   44011   7956     94.1    1.312
-11.0   87    36.50   2487    1786   45342   8071     94.6    1.296
-09.8   88    37.00   2517    1829   46713   8185     95.0    1.280
-08.5   89    37.50   2547    1873   48127   8296     95.4    1.265
-07.3   90    38.00   2577    1918   49585   8404     95.9    1.249
-06.1   92    38.50   2607    1962   51089   8511     96.2    1.234
-04.9   93    39.00   2637    2008   52640   8614     96.6    1.219
-03.7   94    39.50   2667    2054   54241   8715     97.0    1.205  ! Near Maximum !
-02.4   95    40.00   2697    2100   55897   8813     97.3    1.190  ! Near Maximum !
-01.2   96    40.50   2727    2147   57616   8908     97.6    1.176  ! Near Maximum !
+00.0   98    41.00   2757    2194   59399   9000     97.9    1.161  ! Near Maximum !
+01.2   99    41.50   2787    2242   61250   9089     98.2    1.147  ! Near Maximum !
+02.4  100    42.00   2817    2290   63172   9174     98.5    1.134  !DANGEROUS LOAD-DO NOT USE!
+03.7  101    42.50   2846    2339   65167   9256     98.7    1.120  !DANGEROUS LOAD-DO NOT USE!
+04.9  102    43.00   2876    2388   67238   9334     99.0    1.107  !DANGEROUS LOAD-DO NOT USE!
+06.1  104    43.50   2906    2437   69389   9408     99.2    1.093  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     98    41.00   2818    2292   63605   8985     99.4    1.132  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     98    41.00   2688    2085   55210   8919     95.7    1.194  ! Near Maximum !



Thank you very much!


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