Closing in on 140 gr. AB in 270 Win.

[Oldtrader3]

I have been using IMR4350 in my 270win for over 40years :wink:.
Load info for 130gr. ABs is 54.5grs. of IMR4350 right around 3000fps. & .5 MOA if I am on that day :mrgreen:. It close to max so remember start lower & work up.

Blessings,
Dan

So, have I Dan. Loading 55.0 grs IMR 4350 w/ 130 Partition at 2940 fps now, was over 3000 fps years ago. Throat is starting to erode. Using this load since 1966, that is what my RCBS dies are stamped.

 

[sendero]

Thank you.
I do not think magpro is easy to find here in Norway.Some aliant Reloader and Imr powder is possible to find. I think i Get god help getting high velocetis with27" barrel.

 

[lhsako]

for what it's worth, I get 3,180 AVG FPS w/ 63 grs. RL22 and the 130 AB. 3 shot-.773". in my SAKO. would be a dangerous load in most rifles.I use a drop tube and tap on the bench as I charge the WW case. just showing this for purpose of comparison.

 

[SJB358]

That's a GREAT load LH, I ran it through QL to see what sorta PSI's it looked like and it's pretty decent really. Accounting for a little larger case, your right in the 62K mark and really a screamer of a load.

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Nosler AccuBond 54987
Useable Case Capaci: 60.395 grain H2O = 3.921 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-22

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 87 48.80 2502 1807 30327 9630 86.3 1.490
-18.0 89 50.02 2570 1907 32505 9979 87.9 1.449
-16.0 91 51.24 2639 2010 34846 10318 89.4 1.409
-14.0 93 52.46 2708 2116 37371 10646 90.9 1.369
-12.0 95 53.68 2777 2226 40092 10961 92.2 1.325
-10.0 98 54.90 2847 2339 43030 11262 93.4 1.281
-08.0 100 56.12 2917 2456 46202 11546 94.6 1.239
-06.0 102 57.34 2987 2576 49639 11813 95.6 1.198
-04.0 104 58.56 3057 2698 53361 12060 96.6 1.159
-02.0 106 59.78 3128 2824 57398 12285 97.4 1.121 ! Near Maximum !
+00.0 108 61.00 3198 2953 61782 12488 98.1 1.085 ! Near Maximum !
+02.0 111 62.22 3269 3084 66555 12666 98.8 1.050 !DANGEROUS LOAD-DO NOT USE!
+04.0 113 63.44 3339 3219 71757 12818 99.2 1.015 !DANGEROUS LOAD-DO NOT USE!
+06.0 115 64.66 3410 3356 77397 12942 99.6 0.983 !DANGEROUS LOAD-DO NOT USE!
+08.0 117 65.88 3480 3495 83539 13036 99.9 0.951 !DANGEROUS LOAD-DO NOT USE!
+10.0 119 67.10 3550 3637 90248 13101 100.0 0.920 !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 108 61.00 3364 3267 75816 12210 100.0 0.998 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 108 61.00 2973 2551 49299 12011 91.3 1.198

 

[Sas874runner]

Norma mrp seems to be right around rl22 if that is easier to find there. And from some of the ql projections appears to be quite the powder.have no experience with it but have been considering working up a load with it.

 

[lhsako]

That's a GREAT load LH, I ran it through QL to see what sorta PSI's it looked like and it's pretty decent really. Accounting for a little larger case, your right in the 62K mark and really a screamer of a load.

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Nosler AccuBond 54987
Useable Case Capaci: 60.395 grain H2O = 3.921 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-22

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 87 48.80 2502 1807 30327 9630 86.3 1.490
-18.0 89 50.02 2570 1907 32505 9979 87.9 1.449
-16.0 91 51.24 2639 2010 34846 10318 89.4 1.409
-14.0 93 52.46 2708 2116 37371 10646 90.9 1.369
-12.0 95 53.68 2777 2226 40092 10961 92.2 1.325
-10.0 98 54.90 2847 2339 43030 11262 93.4 1.281
-08.0 100 56.12 2917 2456 46202 11546 94.6 1.239
-06.0 102 57.34 2987 2576 49639 11813 95.6 1.198
-04.0 104 58.56 3057 2698 53361 12060 96.6 1.159
-02.0 106 59.78 3128 2824 57398 12285 97.4 1.121 ! Near Maximum !
+00.0 108 61.00 3198 2953 61782 12488 98.1 1.085 ! Near Maximum !
+02.0 111 62.22 3269 3084 66555 12666 98.8 1.050 !DANGEROUS LOAD-DO NOT USE!
+04.0 113 63.44 3339 3219 71757 12818 99.2 1.015 !DANGEROUS LOAD-DO NOT USE!
+06.0 115 64.66 3410 3356 77397 12942 99.6 0.983 !DANGEROUS LOAD-DO NOT USE!
+08.0 117 65.88 3480 3495 83539 13036 99.9 0.951 !DANGEROUS LOAD-DO NOT USE!
+10.0 119 67.10 3550 3637 90248 13101 100.0 0.920 !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 108 61.00 3364 3267 75816 12210 100.0 0.998 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 108 61.00 2973 2551 49299 12011 91.3 1.198

not surprised SJ, no press. signs. I can rally seat that bullet out w/ the Sako AV. the magazine doesn't hinder me the way it does in some rifles!

 

[SJB358]

Norma mrp seems to be right around rl22 if that is easier to find there. And from some of the ql projections appears to be quite the powder.have no experience with it but have been considering working up a load with it.

It's been working really well in the 7mm Rem Mag.. I like it. Might try to buy into a 8lb'er..

 

[lhsako]

That's a GREAT load LH, I ran it through QL to see what sorta PSI's it looked like and it's pretty decent really. Accounting for a little larger case, your right in the 62K mark and really a screamer of a load.

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Nosler AccuBond 54987
Useable Case Capaci: 60.395 grain H2O = 3.921 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-22

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 87 48.80 2502 1807 30327 9630 86.3 1.490
-18.0 89 50.02 2570 1907 32505 9979 87.9 1.449
-16.0 91 51.24 2639 2010 34846 10318 89.4 1.409
-14.0 93 52.46 2708 2116 37371 10646 90.9 1.369
-12.0 95 53.68 2777 2226 40092 10961 92.2 1.325
-10.0 98 54.90 2847 2339 43030 11262 93.4 1.281
-08.0 100 56.12 2917 2456 46202 11546 94.6 1.239
-06.0 102 57.34 2987 2576 49639 11813 95.6 1.198
-04.0 104 58.56 3057 2698 53361 12060 96.6 1.159
-02.0 106 59.78 3128 2824 57398 12285 97.4 1.121 ! Near Maximum !
+00.0 108 61.00 3198 2953 61782 12488 98.1 1.085 ! Near Maximum !
+02.0 111 62.22 3269 3084 66555 12666 98.8 1.050 !DANGEROUS LOAD-DO NOT USE!
+04.0 113 63.44 3339 3219 71757 12818 99.2 1.015 !DANGEROUS LOAD-DO NOT USE!
+06.0 115 64.66 3410 3356 77397 12942 99.6 0.983 !DANGEROUS LOAD-DO NOT USE!
+08.0 117 65.88 3480 3495 83539 13036 99.9 0.951 !DANGEROUS LOAD-DO NOT USE!
+10.0 119 67.10 3550 3637 90248 13101 100.0 0.920 !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 108 61.00 3364 3267 75816 12210 100.0 0.998 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 108 61.00 2973 2551 49299 12011 91.3 1.198

yes it's smoking"...lol I want to point out that my sako allows the bullet to be seated waaay out in the magazine. thereby increasing case capacity a skoosh and enabling me to hit that sweet spot w/ the bullet in regards to the rifling.