Quick load request 270 win 150 ABLR Reloader 26

[Bjolly]

Hello! New to this forum! Looking for load data on 270 Winchester with Alliant Reloader 26 with 150 gr ABLR. Hoping to get 3000+ fps out of a tikka T3X. But looking for an accurate starting point. Thanks!

 

[JD338]

Welcome to the forum.
What powders do you have access to?

JD338

 

[Bjolly]

Alliant reloader 26 and accurate Magpro. I’m new to reloading, have never reloaded before but am working with my good buddy who has a lot of knowledge and experience with it, as well as all of the equipment. He just wants me to get some data to start with, and in the past I’ve read that Reloader 26 and the 150 ABLR are a great combo in the 270 win.

 

[lhsako]

Alliant reloader 26 and accurate Magpro. I’m new to reloading, have never reloaded before but am working with my good buddy who has a lot of knowledge and experience with it, as well as all of the equipment. He just wants me to get some data to start with, and in the past I’ve read that Reloader 26 and the 150 ABLR are a great combo in the 270 win.

RL26 gives over 3,000 and groups 3 shots @ .336" w/ the 150 ballistic tip in my .270 Sako & 24" Brux barrel.

 

[Bjolly]

RL26 gives over 3,000 and groups 3 shots @ .336" w/ the 150 ballistic tip in my .270 Sako & 24" Brux barrel.

Any starting points with RL26 and a 150?

 

[DrMike]

Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 150, Nosler Accubond LR 58836 G7
Useable Case Capaci: 58.520 grain H2O = 3.800 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26 *C

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   94    54.27   2687    2404   43536  12947     98.8    1.292
-09.0   95    54.87   2720    2465   45199  13061     99.1    1.270
-08.0   96    55.48   2754    2526   46924  13165     99.3    1.247
-07.0   97    56.08   2788    2589   48749  13260     99.6    1.225
-06.0   98    56.68   2821    2651   50641  13345     99.7    1.203
-05.0   99    57.29   2855    2715   52618  13420     99.9    1.182
-04.0  100    57.89   2888    2779   54685  13485    100.0    1.162
-03.0  101    58.49   2922    2843   56840  13539    100.0    1.141  ! Near Maximum !
-02.0  102    59.09   2955    2908   59104  13585    100.0    1.121  ! Near Maximum !
-01.0  103    59.70   2988    2973   61469  13629    100.0    1.101  ! Near Maximum !
+00.0  104    60.30   3021    3039   63945  13672    100.0    1.082  ! Near Maximum !
+01.0  105    60.90   3053    3105   66537  13713    100.0    1.063  !DANGEROUS LOAD-DO NOT USE!
+02.0  106    61.51   3086    3172   69256  13753    100.0    1.044  !DANGEROUS LOAD-DO NOT USE!
+03.0  107    62.11   3118    3239   72107  13791    100.0    1.026  !DANGEROUS LOAD-DO NOT USE!
+04.0  108    62.71   3151    3307   75089  13828    100.0    1.008  !DANGEROUS LOAD-DO NOT USE!
+05.0  109    63.32   3183    3375   78202  13862    100.0    0.990  !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    104    60.30   3097    3194   72465  13338    100.0    1.031  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    104    60.30   2925    2850   56206  14011     99.7    1.141  ! Near Maximum !

Drop back about 5% from max for a starting point. Work up to max, watching for pressure signs (stiff bolt lift, loose primer pockets, etc.).

 

[Bjolly]

Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 150, Nosler Accubond LR 58836 G7
Useable Case Capaci: 58.520 grain H2O = 3.800 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26 *C

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   94    54.27   2687    2404   43536  12947     98.8    1.292
-09.0   95    54.87   2720    2465   45199  13061     99.1    1.270
-08.0   96    55.48   2754    2526   46924  13165     99.3    1.247
-07.0   97    56.08   2788    2589   48749  13260     99.6    1.225
-06.0   98    56.68   2821    2651   50641  13345     99.7    1.203
-05.0   99    57.29   2855    2715   52618  13420     99.9    1.182
-04.0  100    57.89   2888    2779   54685  13485    100.0    1.162
-03.0  101    58.49   2922    2843   56840  13539    100.0    1.141  ! Near Maximum !
-02.0  102    59.09   2955    2908   59104  13585    100.0    1.121  ! Near Maximum !
-01.0  103    59.70   2988    2973   61469  13629    100.0    1.101  ! Near Maximum !
+00.0  104    60.30   3021    3039   63945  13672    100.0    1.082  ! Near Maximum !
+01.0  105    60.90   3053    3105   66537  13713    100.0    1.063  !DANGEROUS LOAD-DO NOT USE!
+02.0  106    61.51   3086    3172   69256  13753    100.0    1.044  !DANGEROUS LOAD-DO NOT USE!
+03.0  107    62.11   3118    3239   72107  13791    100.0    1.026  !DANGEROUS LOAD-DO NOT USE!
+04.0  108    62.71   3151    3307   75089  13828    100.0    1.008  !DANGEROUS LOAD-DO NOT USE!
+05.0  109    63.32   3183    3375   78202  13862    100.0    0.990  !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    104    60.30   3097    3194   72465  13338    100.0    1.031  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    104    60.30   2925    2850   56206  14011     99.7    1.141  ! Near Maximum !

Drop back about 5% from max for a starting point. Work up to max, watching for pressure signs (stiff bolt lift, loose primer pockets, etc.).

Thank you!

 

[wvbuckbuster]

Welcome to the forum. Good folks and info found here. Hope your loading is pleasurable and that you get great accuracy from your load development. Dan.

 

[Bjolly]

Welcome to the forum. Good folks and info found here. Hope your loading is pleasurable and that you get great accuracy from your load development. Dan.

Thanks Dan!

 

[lhsako]

keep us posted on how it goes.

 

[SJB358]

My old Tikka loved 26 and the 150 ABLR’s. It’s definitely a solid combo. Hope the data give you a place to start. I seated them .050” off the lands to start. Never had to mess with them much.