6.5 SAUM LOAD DATA

[ramrod79]

So I was in the process of buying TI action for my 6.5 Sherman when I stumbled upon a 6.5 SAUM barrelled action for sale that fits my lighter weight needs so rather than pull my Sherman apart I will go with the SAUM ,and now I am in need of Load data for this round using 140 Berger . I would prefer to use H 1000, Retumbo or N 570 as I am not a RL powder guy so if you have data for me great .
I understand that the 6.5SS may be close to this round so even some 6.5 SS starting data would be appreciated.

 

[Rich Coyle]

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[Rich Coyle]

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[Rich Coyle]

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[Shooter264]

60-61 H1000 or 62-63 Retumbo will get you where you need to be. Fed 215's

 

[jrsolocam]

The GAP 4s / 6.5 PRC forum on Facebook has more load data than you can read in a night....

 

[gilbertc]

My proof barreled 6.5 saum in for sale section likes the 140 berger and loves the new 150 smk!

61.5 H1000 with 140 3125 FPS
59 H1000 with 150 3027 FPS sd 4.2 stupid easy to hit 1000 yards.

Both with Hornady 4s brass
210m primer

 

[Kimber7man]

59-61 grains H1000 with the 140 Berger VLD or JLK
62-63 grains H1000 with the 130 Berger VLD of JLK

 

[Kimber7man]

Note, those Berger loads are for a .081 throat per GAP recommendations. It also depends on brass and the reamer used.

 

[orch]

Berger 140gr hybrid 0.020"off the lands, nosler brass, cci250 primers, h1000 60.5 gr 3045fps

Berger 140gr hybrid 0.020"off the lands, nosler brass, cci250 primers, RL26 59gr 3140fps

Hornady 143gr eld-x, not sure how far off the lands but used the same setting on my seater die as the hybrids, nosler brass, cci250 primers, RL26 3140fps (same POI as the Berger load out to 1000yrds)

Have ramped up to over 3200fps with no pressure signs for either bullet...

Orch

 

[jetbrook]

Cartridge : 6.5 mm RSAUM
Bullet : .264, 140, Berger Hunt VLD Hunt #26504
Useable Case Capaci: 63.913 grain H2O = 4.150 cm³
Cartridge O.A.L. L6: 2.825 inch = 71.76 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon H1000

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 46.40 2218 1530 25505 9486 85.9 1.770
-18.0 82 47.56 2277 1612 27185 9852 87.5 1.725
-16.0 84 48.72 2337 1698 28982 10210 89.1 1.681
-14.0 86 49.88 2398 1787 30903 10557 90.6 1.637
-12.0 88 51.04 2458 1879 32960 10893 92.0 1.595
-10.0 90 52.20 2520 1974 35163 11215 93.3 1.553
-08.0 92 53.36 2581 2071 37525 11521 94.5 1.511
-06.0 94 54.52 2643 2172 40057 11810 95.6 1.464
-04.0 96 55.68 2705 2275 42777 12079 96.6 1.418
-02.0 98 56.84 2767 2380 45698 12326 97.4 1.374
+00.0 100 58.00 2829 2489 48845 12550 98.2 1.331
+02.0 102 59.16 2892 2599 52227 12750 98.8 1.290
+04.0 103 60.32 2954 2712 55885 12923 99.3 1.250 ! Near Maximum !
+06.0 105 61.48 3015 2827 59830 13068 99.7 1.212 ! Near Maximum !
+08.0 107 62.64 3077 2944 64097 13184 99.9 1.174 ! Near Maximum !
+10.0 109 63.80 3139 3062 68723 13269 100.0 1.138 !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 58.00 2986 2772 59512 12263 100.0 1.223 ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba 100 58.00 2618 2130 39653 11955 90.6 1.469

 

[orch]

Jetbrook, where did you get your h2o case capacity spec from?
I'm not familiar with quickload, is "useable" case capacity a calculation of what is left when the the bullet is seated in the case?

63gr of h2o seems low.... my cases and most of the other guys that i have seen post h2o capacities on their 6.5saums are in the 70-72 grain ranges but that would be total case capacity filled to the mouth...

Orch

 

[Crowe284]

Just finished this load today and it hammers.
300 saum Brass necked to 6.5
CCI-BR2
60 gr H1000
2.210 CBTO W/ Hornady Comparator

The two groups below were not hand picked. Rifle does this every time. GAP built, 8.7 twist bartlein on Templar v1 action, Manners mcs-t Elite, triggertech. About to chrono with magnetospeed v3 and Will post results.

 

[Crowe284]

Got the load chronographed. Shot 5 cold bore shots 20 minutes apart.

MV=3,033
ES=7
SD=2.6

With those number on top of groups in the .1's, I think I'll call it good!