Reloder 26

[parshal]

In my 22 Creedmoor and 6.5 WSM, my max charges are nearly the same with 4831SC, H1000 and R26. I'd find a load with the other two powders and work up similarly.

 

[Bowfishn]

Here is a 215 gr. Berger Hybr. with RL26

Cartridge : .30-378 Weath. Mag.
Bullet : .308, 215, Berger Hybr #30429
Useable Case Capaci: 118.305 grain H2O = 7.681 cm³
Cartridge O.A.L. L6: 3.655 inch = 92.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.526% 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

-05.3 77 90.00 2803 3750 53123 14979 100.0 1.433
-04.7 77 90.50 2816 3786 53958 15030 100.0 1.422
-04.2 78 91.00 2829 3821 54805 15081 100.0 1.411 ! Near Maximum !
-03.7 78 91.50 2842 3857 55663 15131 100.0 1.401 ! Near Maximum !
-03.2 78 92.00 2855 3892 56533 15181 100.0 1.391 ! Near Maximum !
-02.6 79 92.50 2869 3928 57415 15231 100.0 1.380 ! Near Maximum !
-02.1 79 93.00 2882 3964 58308 15281 100.0 1.370 ! Near Maximum !
-01.6 80 93.50 2895 4000 59214 15331 100.0 1.360 ! Near Maximum !
-01.1 80 94.00 2908 4036 60133 15380 100.0 1.350 ! Near Maximum !
-00.5 81 94.50 2921 4072 61064 15429 100.0 1.340 ! Near Maximum !
+00.0 81 95.00 2934 4108 62008 15478 100.0 1.330 ! Near Maximum !
+00.5 81 95.50 2946 4144 62965 15526 100.0 1.321 ! Near Maximum !
+01.1 82 96.00 2959 4181 63935 15575 100.0 1.311 !DANGEROUS LOAD-DO NOT USE!
+01.6 82 96.50 2972 4217 64918 15623 100.0 1.302 !DANGEROUS LOAD-DO NOT USE!
+02.1 83 97.00 2985 4254 65915 15671 100.0 1.292 !DANGEROUS LOAD-DO NOT USE!
+02.6 83 97.50 2998 4290 66925 15718 100.0 1.283 !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 81 95.00 3026 4371 73659 15084 100.0 1.229 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 81 95.00 2795 3730 49992 16045 100.0 1.469

 

[Bowfishn]

Here is the same thing with Retumbo

Cartridge : .30-378 Weath. Mag.
Bullet : .308, 215, Berger Hybr #30429
Useable Case Capaci: 118.305 grain H2O = 7.681 cm³
Cartridge O.A.L. L6: 3.655 inch = 92.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon Retumbo

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.481% 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

-04.8 90 99.00 2841 3854 53202 15583 100.0 1.409
-04.3 91 99.50 2854 3890 54041 15626 100.0 1.398
-03.8 91 100.00 2868 3926 54892 15669 100.0 1.388 ! Near Maximum !
-03.4 92 100.50 2881 3962 55756 15712 100.0 1.378 ! Near Maximum !
-02.9 92 101.00 2894 3998 56631 15754 100.0 1.368 ! Near Maximum !
-02.4 93 101.50 2907 4034 57520 15797 100.0 1.358 ! Near Maximum !
-01.9 93 102.00 2920 4070 58421 15839 100.0 1.348 ! Near Maximum !
-01.4 93 102.50 2933 4107 59336 15881 100.0 1.338 ! Near Maximum !
-01.0 94 103.00 2946 4143 60263 15922 100.0 1.329 ! Near Maximum !
-00.5 94 103.50 2959 4180 61204 15964 100.0 1.319 ! Near Maximum !
+00.0 95 104.00 2972 4216 62159 16005 100.0 1.310 ! Near Maximum !
+00.5 95 104.50 2985 4253 63127 16046 100.0 1.300 !DANGEROUS LOAD-DO NOT USE!
+01.0 96 105.00 2998 4290 64110 16087 100.0 1.291 !DANGEROUS LOAD-DO NOT USE!
+01.4 96 105.50 3010 4327 65107 16127 100.0 1.282 !DANGEROUS LOAD-DO NOT USE!
+01.9 97 106.00 3023 4364 66119 16167 100.0 1.273 !DANGEROUS LOAD-DO NOT USE!
+02.4 97 106.50 3036 4401 67145 16207 100.0 1.264 !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 95 104.00 3076 4518 75275 15545 100.0 1.207 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 95 104.00 2813 3777 48969 16671 100.0 1.451

 

[Bowfishn]

That may give you an Idea of how it may work in your .30-378 weatherby

 

[ctw]

Thank you Bowfish for the info. That gives me a place to start. CTW

 

[hidesert]

I finally got ahold of some RL26 for use in my .280 Rem Ruger No.1A. I had to jack up the Ba in Quickload to .385 to match the velocities I was seeing.

So be cautious with this powder.

 

[Bowfishn]

I finally got ahold of some RL26 for use in my .280 Rem Ruger No.1A. I had to jack up the Ba in Quickload to .385 to match the velocities I was seeing.

So be cautious with this powder.

I had to raise mine to 0.3558 to match velocities as well. I listed the above by the default Ba in Quick Loads for RL26 which is 0.3397. My first lot of RL26 was closer to the default. So Yes be careful start low.

 

[Rhovee]

The 8lb jugs they sell are huge! I ended up dumping 4 more 1 pounders in there and shook it up real good. Figure I won't need to mess with different lots for a while.

 

[Tumbleweed]

I'm still in the process of load development and haven't taken enough shots to confirm but with my 300 wm and 215 bergers in around 2950 with 77 grains RL26.

I have not hit pressure yet but I think 77 grains is getting up there.

Anyone else using the 215 in a 300 wm gone over 77 grains of RL26?

I have gone as high as 78 grains of RL26 in pressure testing. At 78 grains my factory 26" barrel was producing roughly 3060-3080fps. 77 grains was what I considered max in that gun and velocity was around 3020fps.

 

[Lonewolf74]

I have gone as high as 78 grains of RL26 in pressure testing. At 78 grains my factory 26" barrel was producing roughly 3060-3080fps. 77 grains was what I considered max in that gun and velocity was around 3020fps.

I have since gone up to 78.5 grains of RL26 and still did not hit pressure. My velocity was 3045 there but I only have about 45 rounds down the tube so I expect it to speed up some. I backed off to 77 grains cus there appears to be a node there, my avg. velocity is 2950 at 77 grains.

 

[santee116]

Just got an 8lb jug, tagging in.

 

[257Tony]

FYI for anyone using this in 264 WM. I've tested up to 64.5 grains with very good accuracy, gives 3075 fps with a 140 Berger. No signs of pressure at all, next year I will try to go higher.

 

[Bowfishn]

FYI for anyone using this in 264 WM. I've tested up to 64.5 grains with very good accuracy, gives 3075 fps with a 140 Berger. No signs of pressure at all, next year I will try to go higher.

Glad to hear it.
24 or 26" barrel?
Don't tell anyone your results, everyone will be buying RL26 and I won't be able to find any.
I ran the numbers on the 30-06 using 200+gr bullets and it looks real good for that as well, I run it in my 6.5 Creed and I am thinking of testing it out in my 2 Sako Finnbears.

 

[257Tony]

Glad to hear it.
24 or 26" barrel?
Don't tell anyone your results, everyone will be buying RL26 and I won't be able to find any.
I ran the numbers on the 30-06 using 200+gr bullets and it looks real good for that as well, I run it in my 6.5 Creed and I am thinking of testing it out in my 2 Sako Finnbears.

26" Wilson 1:9 barrel. No problem stabilizing any of the 140-143 vld type bullets I've tried (5000-8000 elevation)