Don't have info on the 6 Creed, but I use RL26 in my 6.5 Creed
I listed info on the 6x47 Lapua with the RL26 just to give you an Idea.
The RL26 used here is based on speeds I get with my 6.5 Creed 26" with lot # 08014Y050115
Cartridge : 6 x 47 - Lapua - 6mm HOT
Bullet : .243, 105, JLK VLD 24105
Useable Case Capaci: 43.981 grain H2O = 2.856 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-26 lot # 08014Y050115
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.393% 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
-03.9 98 42.56 3051 2170 50112 10320 100.0 1.285
-03.5 98 42.73 3064 2188 50855 10333 100.0 1.276
-03.1 98 42.91 3077 2207 51609 10346 100.0 1.268
-02.7 99 43.08 3090 2225 52377 10359 100.0 1.260
-02.4 99 43.26 3102 2244 53158 10371 100.0 1.251
-02.0 100 43.43 3115 2263 53952 10384 100.0 1.243 ! Near Maximum !
-01.6 100 43.60 3128 2281 54759 10396 100.0 1.235 ! Near Maximum !
-01.2 100 43.78 3141 2300 55582 10408 100.0 1.227 ! Near Maximum !
-00.8 101 43.95 3153 2318 56418 10421 100.0 1.219 ! Near Maximum !
-00.4 101 44.13 3166 2337 57269 10432 100.0 1.211 ! Near Maximum !
+00.0 102 44.30 3179 2356 58134 10444 100.0 1.203 ! Near Maximum !
+00.4 102 44.47 3191 2375 59014 10456 100.0 1.195 ! Near Maximum !
+00.8 102 44.65 3204 2394 59913 10467 100.0 1.188 ! Near Maximum !
+01.2 103 44.82 3217 2412 60822 10478 100.0 1.180 ! Near Maximum !
+01.6 103 45.00 3229 2431 61753 10490 100.0 1.172 ! Near Maximum !
+02.0 104 45.17 3242 2450 62698 10501 100.0 1.165 !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 44.30 3315 2563 73867 9961 100.0 1.102 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 44.30 2965 2050 45104 10833 98.0 1.339
With the RL26 burn rate that came with QL.
Cartridge : 6 x 47 - Lapua - 6mm HOT
Bullet : .243, 105, JLK VLD 24105
Useable Case Capaci: 43.981 grain H2O = 2.856 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-26
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.382% 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
-03.8 101 43.86 3060 2183 49960 10678 99.8 1.281
-03.4 101 44.03 3073 2202 50695 10696 99.9 1.273
-03.1 101 44.21 3087 2221 51444 10713 99.9 1.265
-02.7 102 44.38 3100 2240 52205 10729 99.9 1.256
-02.3 102 44.56 3113 2260 52980 10744 100.0 1.248
-01.9 103 44.73 3127 2279 53768 10757 100.0 1.240 ! Near Maximum !
-01.5 103 44.90 3140 2299 54570 10770 100.0 1.232 ! Near Maximum !
-01.1 103 45.08 3153 2318 55385 10781 100.0 1.223 ! Near Maximum !
-00.8 104 45.25 3166 2338 56216 10791 100.0 1.215 ! Near Maximum !
-00.4 104 45.43 3180 2357 57060 10800 100.0 1.207 ! Near Maximum !
+00.0 105 45.60 3193 2377 57921 10810 100.0 1.199 ! Near Maximum !
+00.4 105 45.77 3206 2396 58796 10819 100.0 1.191 ! Near Maximum !
+00.8 105 45.95 3219 2416 59687 10828 100.0 1.183 ! Near Maximum !
+01.1 106 46.12 3232 2436 60594 10837 100.0 1.176 ! Near Maximum !
+01.5 106 46.30 3245 2455 61518 10846 100.0 1.168 ! Near Maximum !
+01.9 107 46.47 3258 2475 62459 10854 100.0 1.160 !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 45.60 3344 2608 73830 10269 100.0 1.095 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 45.60 2958 2041 45157 11009 96.4 1.337
May give you an Idea how it reacts with 6 mm in small cases about the size of Creed.
243 shows good results with RL26 as well.