QL Request 6.5, 143 eldx 2.898 coal

zcoop13 · Oct 9, 2018

I don’t have brass capacity.

Norma Brass
Fed215GM
143 eldx
20” Bbl

H4350, RL26, RL16 are the powders i’m looking at.

48 gr of RL26 magneto’d at 2739 avg. Very, very lightly compressed. A kernel break every few loads

Redding micrometer seating dies, say not to compress, so..looking for faster burning powders as an option to avoid compression.

Thanks in advance.

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BruceP · Oct 9, 2018

I don't have QL to run but they will need the cartridge. I'm assuming 6.5 Creedmoor but could be 260 Remington or maybe even 6.5-284 but with your load and velocity I'm think one of the former. Oh and barrel length would also be helpful. I left that one out myself the last time I ask for help.

Bruce

zcoop13 · Oct 10, 2018

Yes, you’re right! Creedmoore.

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DrMike · Oct 10, 2018

Code:

Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 47.633 grain H2O = 3.093 cm³
Cartridge O.A.L. L6: 2.898 inch = 73.61 mm
Barrel Length      : 20.0 inch = 508.0 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    39.33   2406    1839   45792  10849     95.5    1.244
-09.0   93    39.77   2432    1878   47222  10975     95.9    1.226
-08.0   94    40.20   2458    1919   48697  11098     96.3    1.209
-07.0   95    40.64   2484    1959   50217  11218     96.7    1.191
-06.0   96    41.08   2510    2000   51785  11335     97.0    1.174
-05.0   97    41.52   2535    2041   53400  11449     97.3    1.157
-04.0   98    41.95   2561    2083   55067  11559     97.7    1.141  ! Near Maximum !
-03.0   99    42.39   2587    2125   56785  11665     98.0    1.125  ! Near Maximum !
-02.0  100    42.83   2613    2167   58558  11768     98.2    1.109  ! Near Maximum !
-01.0  101    43.26   2638    2210   60387  11867     98.5    1.093  ! Near Maximum !
+00.0  102    43.70   2664    2253   62274  11962     98.7    1.078  ! Near Maximum !
+01.0  103    44.14   2690    2297   64222  12054     98.9    1.063  !DANGEROUS LOAD-DO NOT USE!
+02.0  104    44.57   2715    2341   66233  12141     99.1    1.048  !DANGEROUS LOAD-DO NOT USE!
+03.0  105    45.01   2741    2385   68309  12223     99.3    1.034  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    45.45   2766    2429   70453  12302     99.5    1.019  !DANGEROUS LOAD-DO NOT USE!
+05.0  107    45.89   2791    2474   72668  12376     99.6    1.005  !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    43.70   2773    2441   73033  11694    100.0    1.006  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    43.70   2516    2009   51704  11683     93.6    1.171

DrMike · Oct 10, 2018

Code:

Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 47.633 grain H2O = 3.093 cm³
Cartridge O.A.L. L6: 2.898 inch = 73.61 mm
Barrel Length      : 20.0 inch = 508.0 mm
Powder             : Alliant Reloder-16

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   91    38.97   2455    1914   44161  11464     99.2    1.266
-09.0   92    39.40   2481    1955   45635  11561     99.4    1.247
-08.0   93    39.84   2508    1997   47150  11654     99.5    1.228
-07.0   94    40.27   2534    2039   48707  11740     99.7    1.209
-06.0   95    40.70   2560    2081   50310  11822     99.8    1.191
-05.0   96    41.14   2586    2123   51963  11897     99.9    1.174
-04.0   97    41.57   2612    2166   53670  11967    100.0    1.156  ! Near Maximum !
-03.0   98    42.00   2637    2209   55432  12030    100.0    1.139  ! Near Maximum !
-02.0   99    42.43   2663    2252   57250  12088    100.0    1.123  ! Near Maximum !
-01.0  100    42.87   2689    2295   59128  12144    100.0    1.106  ! Near Maximum !
+00.0  101    43.30   2714    2338   61066  12200    100.0    1.090  ! Near Maximum !
+01.0  102    43.73   2739    2382   63068  12254    100.0    1.074  !DANGEROUS LOAD-DO NOT USE!
+02.0  103    44.17   2764    2426   65136  12308    100.0    1.059  !DANGEROUS LOAD-DO NOT USE!
+03.0  104    44.60   2789    2470   67273  12360    100.0    1.044  !DANGEROUS LOAD-DO NOT USE!
+04.0  105    45.03   2814    2514   69480  12412    100.0    1.029  !DANGEROUS LOAD-DO NOT USE!
+05.0  106    45.47   2839    2559   71762  12463    100.0    1.014  !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    101    43.30   2815    2515   73818  11720    100.0    1.010  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    101    43.30   2561    2082   48648  12503     97.9    1.199

DrMike · Oct 10, 2018

Code:

Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 47.633 grain H2O = 3.093 cm³
Cartridge O.A.L. L6: 2.898 inch = 73.61 mm
Barrel Length      : 20.0 inch = 508.0 mm
Powder             : Alliant Reloder-26

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   95    44.82   2505    1992   42322  13078     97.8    1.278
-09.0   96    45.32   2537    2044   43939  13213     98.2    1.255
-08.0   97    45.82   2570    2097   45623  13338     98.6    1.232
-07.0   98    46.31   2603    2151   47382  13455     98.9    1.211
-06.0   99    46.81   2635    2205   49219  13562     99.2    1.189
-05.0  100    47.31   2668    2260   51140  13660     99.5    1.168
-04.0  101    47.81   2700    2315   53147  13747     99.7    1.147
-03.0  102    48.31   2733    2371   55247  13824     99.8    1.126  ! Near Maximum !
-02.0  103    48.80   2765    2428   57446  13890     99.9    1.106  ! Near Maximum !
-01.0  104    49.30   2798    2485   59747  13945    100.0    1.086  ! Near Maximum !
+00.0  105    49.80   2830    2543   62158  13990    100.0    1.067  ! Near Maximum !
+01.0  107    50.30   2862    2601   64686  14031    100.0    1.048  !DANGEROUS LOAD-DO NOT USE!
+02.0  108    50.80   2894    2659   67337  14069    100.0    1.029  !DANGEROUS LOAD-DO NOT USE!
+03.0  109    51.29   2926    2718   70119  14106    100.0    1.010  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    51.79   2958    2778   73043  14142    100.0    0.992  !DANGEROUS LOAD-DO NOT USE!
+05.0  111    52.29   2990    2838   76112  14175    100.0    0.974  !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    105    49.80   2969    2799   79228  13322    100.0    0.971  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    49.80   2617    2174   48234  14123     96.0    1.192

zcoop13 · Oct 10, 2018

Awesome! Thank you. I’ll report back on actuals for future reference.

Was thinking a little more was there from the H4350 and RL16. But i suppose it’s pretty close considering the 20” bbl.

Looks like i can try a drop tube on the 26, as there is still some room to go.

Again, thanks for your time.

zcoop13 · Oct 11, 2018

Here is a little data from the initial RL26 workup about a month ago.

2.898 aol
2.250 comp
0.050 off the lands.
143eldx
20” bbl
That’s as close as i can get to lands, boattail just past the shoulder junction. (all of it).

Interestingly, these are pretty dang close to the QL DrMike provided.

Only 3 shots per.

46.0
2608
sd30
es54

47.1
2676
sd13
es25

47.4
2706
sd7
es14

47.7
2710
sd13
es26

48.0
2739
sd8
es16

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zcoop13 · Oct 11, 2018

These are in order from 47.1 to 48. 48 was best, 47.7 worst.

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DrMike · Oct 11, 2018

You do have some admirable groups. Definitely on the right track.

SJB358 · Oct 15, 2018

That 48 grain load looks danged good to me! I am running 46.5 in Alpha cases with RL26 with the 147 ELD and getting 2775 with the load and great accuracy. It is a might crunchy, but it loads fine and shoots awesome so I have resisted messing with it.

QL Request 6.5, 143 eldx 2.898 coal

zcoop13

Beginner

BruceP

Beginner

zcoop13

Beginner

DrMike

Ballistician

DrMike

Ballistician

DrMike

Ballistician

zcoop13

Beginner

zcoop13

Beginner

zcoop13

Beginner

DrMike

Ballistician

SJB358

Ballistician

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