Reloading the .270 Win

[hubcap]

Thats all I need is another nosler bullet to develope a load for. So far in the last 5 years I have managed to load every nosler hunting bullet except the ET. The new ABLR may end up the best of the best. Can,t wait to try them. I would say the 140 AB is my current favorite do it all big game bullet. Tommorow I will be shooting a few AB,s BT,s and PT,s all in 140 grainers. I,ll probably launch a few 110 pro hunters as well. Talk about fun to shoot at low cost and low recoil those pro hunters are it for me.

 

[gerry]

I,ll probably launch a few 110 gamekings as well. Talk about fun to shoot at low cost and low recoil those gamekings are it for me.

I have thought about those too, will have to see if I can find some. Lots of good reviews at Midway USA for them.

 

[runtohunt]

Thank you for the great info! I think that I will start with the 140 grain BT since SPS has seconds right now. I have an excellent supply of RL 22, 4831 sc, etc. Just need to find brass and dies :wink: .

 

[SJB358]

Thank you for the great info! I think that I will start with the 140 grain BT since SPS has seconds right now. I have an excellent supply of RL 22, 4831 sc, etc. Just need to find brass and dies :wink: .

I doubt you will have any trouble coming up with a load with any of those powders.

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 140, Nosler BalTip 27140
Useable Case Capaci: 59.609 grain H2O = 3.870 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22

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 97 53.99 2722 2304 44659 12445 94.0 1.239
-09.0 98 54.59 2756 2361 46275 12603 94.6 1.219
-08.0 99 55.19 2789 2419 47952 12757 95.1 1.198
-07.0 100 55.79 2823 2478 49698 12906 95.7 1.178
-06.0 102 56.39 2857 2537 51514 13050 96.1 1.159
-05.0 103 56.99 2890 2597 53404 13188 96.6 1.140
-04.0 104 57.59 2924 2658 55370 13321 97.0 1.121 ! Near Maximum !
-03.0 105 58.19 2958 2720 57417 13448 97.4 1.102 ! Near Maximum !
-02.0 106 58.79 2992 2782 59553 13568 97.8 1.084 ! Near Maximum !
-01.0 107 59.39 3025 2845 61774 13682 98.2 1.066 ! Near Maximum !
+00.0 108 59.99 3059 2909 64092 13790 98.5 1.049 ! Near Maximum !
+01.0 109 60.59 3093 2974 66497 13891 98.8 1.031 !DANGEROUS LOAD-DO NOT USE!
+02.0 110 61.19 3127 3039 68994 13985 99.0 1.014 !DANGEROUS LOAD-DO NOT USE!
+03.0 111 61.79 3160 3105 71593 14071 99.3 0.998 !DANGEROUS LOAD-DO NOT USE!
+04.0 112 62.39 3194 3171 74300 14151 99.5 0.981 !DANGEROUS LOAD-DO NOT USE!
+05.0 113 62.99 3228 3239 77123 14222 99.6 0.965 !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 59.99 3214 3212 78355 13446 100.0 0.965 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 108 59.99 2847 2519 51018 13314 92.0 1.158

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 140, Nosler BalTip 27140
Useable Case Capaci: 59.609 grain H2O = 3.870 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4831 SC

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 95 52.49 2640 2167 44183 11352 90.9 1.242
-09.0 96 53.07 2673 2220 45740 11509 91.5 1.222
-08.0 97 53.65 2705 2274 47355 11664 92.1 1.202
-07.0 98 54.24 2737 2329 49036 11815 92.7 1.182
-06.0 99 54.82 2769 2384 50782 11963 93.3 1.163
-05.0 100 55.40 2802 2440 52597 12107 93.8 1.144
-04.0 101 55.99 2834 2498 54480 12248 94.3 1.126
-03.0 102 56.57 2867 2555 56446 12384 94.8 1.107 ! Near Maximum !
-02.0 103 57.15 2900 2614 58487 12516 95.3 1.090 ! Near Maximum !
-01.0 104 57.74 2933 2673 60616 12644 95.8 1.072 ! Near Maximum !
+00.0 105 58.32 2965 2734 62827 12767 96.2 1.055 ! Near Maximum !
+01.0 106 58.90 2998 2795 65136 12885 96.6 1.038 !DANGEROUS LOAD-DO NOT USE!
+02.0 107 59.49 3031 2857 67541 12999 97.0 1.021 !DANGEROUS LOAD-DO NOT USE!
+03.0 108 60.07 3064 2919 70050 13106 97.4 1.004 !DANGEROUS LOAD-DO NOT USE!
+04.0 109 60.65 3098 2983 72668 13209 97.7 0.988 !DANGEROUS LOAD-DO NOT USE!
+05.0 110 61.24 3131 3047 75402 13306 98.1 0.972 !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 58.32 3119 3024 75405 12808 99.7 0.976 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 58.32 2767 2381 51274 12100 88.8 1.155

I am thinking you will hit paydirt pretty quick. What scope are you thinking of putting on it?

 

[Antelope_Sniper]

130-150gr Nosler BT/AB.
CCI 200 primer
Over H4831.

Can't go wrong.

 

[Oldtrader3]

I use us one of the oldest, most copied and common loads fo the .270 Win, 130 gr Partition, 55.0 grs of IMR 4350 and a CCI 200 primer in W-W brass. I get about 3060 fps and it has worked for me forever. Dan, I believe uses the same load.

 

[hubcap]

I use us one of the oldest, most copied and common loads fo the .270 Win, 130 gr Partition, 55.0 grs of IMR 4350 and a CCI 200 primer in W-W brass. I get about 3060 fps and it has worked for me forever. Dan, I believe uses the same load.

The 130 sierra flat base bullet using cci-200,s ww-brass and IMR-4350 was my first handload I ever used in the .270. I still have the first box marked 1967. Ha, then I got my first chrony in 1983 and started tinkering too much with other loads. Funny how a chrony will sometimes ruin a great load. I also got 3065 with the charge I was using. That was a killer load on mule deer.

 

[Oldtrader3]

It is a killer load on deer at that velocity with a 130 Partition or whatever.

 

[sask boy]

Charlie it is hard to teach us old dogs new
tricks :shock: I have now bought some H-4831sc
& a couple of pounds of RL-22 because I can't find
anymore IMR4350.
So if I do find some I will have some new powder to experiment
with :wink:

Blessings,
Dan

 

[Oldtrader3]

Dan, IMR 4831 SSC will work great in the .270. If I remeber, the 140 grain Partitions shoot great with 58.0 grains of 4831. Approach with caution or course. Let me know how the RL22 shoots in the .270 Win. It should be great for 140 and 150 grain bulllets.

 

[runtohunt]

More great info and thank you for the QL info! Thanks guys. I have a set of Redding dies and 100 count of Rem brass on there way.

 

[SJB358]

More great info and thank you for the QL info! Thanks guys. I have a set of Redding dies and 100 count of Rem brass on there way.

I am pretty excited to see how you make out with the rifle. Hoping it shoots nearly as good as it looks!

 

[hubcap]

Scott, could you run quick load using IMR-4831 and a 130 PT. I have some load data from dupont dated 1974 that shows a max load of 59 grs. using the 130 core lock. Would be darn interesting to see what quick load would show with the PT.

 

[DrMike]

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Nosler PART SP 16322
Useable Case Capaci: 61.884 grain H2O = 4.018 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4831

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 84 45.92 2484 1780 33218 10362 94.1 1.398
-18.0 86 47.07 2545 1870 35503 10658 95.1 1.363
-16.0 88 48.22 2607 1962 37938 10939 96.1 1.323
-14.0 90 49.36 2668 2055 40533 11204 97.0 1.282
-12.0 92 50.51 2729 2150 43299 11452 97.7 1.242
-10.0 95 51.66 2790 2248 46247 11681 98.4 1.204
-08.0 97 52.81 2851 2347 49391 11891 98.9 1.167
-06.0 99 53.96 2912 2447 52744 12079 99.4 1.131
-04.0 101 55.10 2971 2549 56323 12244 99.7 1.097 ! Near Maximum !
-02.0 103 56.25 3031 2652 60144 12387 99.9 1.064 ! Near Maximum !
+00.0 105 57.40 3090 2756 64227 12504 100.0 1.033 ! Near Maximum !
+02.0 107 58.55 3148 2861 68594 12603 100.0 1.002 !DANGEROUS LOAD-DO NOT USE!
+04.0 109 59.70 3206 2968 73268 12696 100.0 0.973 !DANGEROUS LOAD-DO NOT USE!
+06.0 111 60.84 3264 3075 78276 12786 100.0 0.945 !DANGEROUS LOAD-DO NOT USE!
+08.0 113 61.99 3321 3183 83649 12871 100.0 0.918 !DANGEROUS LOAD-DO NOT USE!
+10.0 116 63.14 3378 3293 89420 12951 100.0 0.891 !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 57.40 3208 2970 76791 12029 100.0 0.957 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 57.40 2915 2453 51836 12640 97.1 1.135

 

[Oldtrader3]

The 130 grain bullet with 58.0 grains of IMR 4831 was JOC's favorite load, according to his books.

 

[hubcap]

Thanks Dr. Mike. Man that is great info. I,ve shot alot of bullets with 57 grs. All of the 130.s chrony over 3000. Quickload pretty much confirms what I suspected with duponts data. Its hot. 57.5 is where I stop these days. The velocity I get is nearly dead nuts on quickload. Very good info Dr. Mike . Thankyou.

 

[rofcrs]

Lessons learned from "abusing" the 270 Win, with 22 inch barrel. 3000fps with the 130s with IMR 4831 will promote long barrel life. Pushing them to 3100fps will provide short term rewards. Used IMR 4831 for 3080fps, accurate yes. Barrel sits in the corner now with old friends. Began loading the .270 before IMR 4831 was on the market, and chrono's were not around to say you were not getting 3200fps either. Times have changed for the good, the data available today is outstanding.
Rofcrs

 

[PJGunner]

The 130 grain bullet with 58.0 grains of IMR 4831 was JOC's favorite load, according to his books.

I thought Jack's load was with the milsurp verion of 4831, granted DuPont made the IMR powders back then. Supposedly the milsurp version had slowed down a bit due to age. I could be wrong. Too much ravages bt CRS deisease these days. :lol:
Paul B.

 

[Oldtrader3]

Yeah you are right Paul, it was H4831 and was the old WWII 20 mm cannon stuff. I remember buying this powder for about $1.75 a pound for several years for my 7mm Mag. It was great powder though, cheap, consistant, accurate. I used H4831 for years until the supply dried up and Hodgdon started making it themselves.

I then used the Hodgdon H4831 for several years until IMR 7828 came out. IMR 7828 gives me about 100 fps more than I ever could get from either IMR 4350 or H4831 in my 7mm Mag and/or in my .340 Weatherby.

 

[Guybo]

I've never owned a 270 and don't have much experience reloading for one but i have helped a couple friends work up a load for theirs. The best combination that produced the best group for me was the Sierra 130gr Pro Hunter and H4831. If i remember correctly this load shot around 1/2" and the rifle was a Browning Bar which i thought was really good for an auto. This was like 5-6yrs ago and he's still using this load today.