Hello, I just found this site. I am looking for some ballistics info for a .270 shooting 130gr. Accubonds. I do not have a chronograph and I am working up a load for a Wyoming mule deer hunt. So far my Ruger 77 with a 22" brl likes 55gr. of IMR 4831 (.8" groups) and 58gr of IMR 4831 (.85"). Does anyone have any personal experience with this combination? Any ideas on velocity so that I can figure trajectory? Thanks, JWF
.270 130 Accubonds
- Thread starter jwf
- Start date
JWF,
I have loaded for three different .270's, a Ruger M77, Weatherby Vanguard, and a Browning A-Bolt. All three liked F210 primers, Rem. or Win brass, 58.0-59.0 grains of H4831SC. All three will shoot under 1/2" three shot groups at 100 yards and solidly at 3000 FPS. The Browning required a little longer COAL to get under 1/2".
Rifles are dead-on at 200 yards, 1.5 inches high at 100 yards, 6.8 inches low at 300 yards, 19.7 inches low at 400 yards, 28.8 inches low at 450 yards, and 40.0 inches low at 500 yards.
The Hodgdon H4831 SC is a completely different powder than the IMR 4831. Start a little low and you will find a sweet load pretty quick.
Killed a nice bull outside of Bondurant, Wyoming with the Browning .270 and 130 grain Partition in 1995 at 400 yards. One shot, drop dead.
The AccuBond is just as deadly if not more so.
Jerry 919
Bend, Oregon
I have loaded for three different .270's, a Ruger M77, Weatherby Vanguard, and a Browning A-Bolt. All three liked F210 primers, Rem. or Win brass, 58.0-59.0 grains of H4831SC. All three will shoot under 1/2" three shot groups at 100 yards and solidly at 3000 FPS. The Browning required a little longer COAL to get under 1/2".
Rifles are dead-on at 200 yards, 1.5 inches high at 100 yards, 6.8 inches low at 300 yards, 19.7 inches low at 400 yards, 28.8 inches low at 450 yards, and 40.0 inches low at 500 yards.
The Hodgdon H4831 SC is a completely different powder than the IMR 4831. Start a little low and you will find a sweet load pretty quick.
Killed a nice bull outside of Bondurant, Wyoming with the Browning .270 and 130 grain Partition in 1995 at 400 yards. One shot, drop dead.
The AccuBond is just as deadly if not more so.
Jerry 919
Bend, Oregon
6mm Remington
Ammo Smith
- Feb 27, 2006
- 5,273
- 696
Jerry 919 is correct. H4831SC is a great powder and should work with the 130 gr. AccuBond. I load for a friend in his Remington Model 700 MTN rifle. In his rifle, He gets 3/4 inch 3 shot groups at 100 yards. There are no pressure signs, but work up to this load in your rifle.
Winchester brass
Federal Large Rifle magnum primers
59.0 grs of H4831SC powder.
In his 22 inch barrel it chronographs at 3030 fps. IMR4831 is a great powder too, but as Jerry 919 states, it will require a completely different load work.
Winchester brass
Federal Large Rifle magnum primers
59.0 grs of H4831SC powder.
In his 22 inch barrel it chronographs at 3030 fps. IMR4831 is a great powder too, but as Jerry 919 states, it will require a completely different load work.
- Nov 4, 2004
- 25,516
- 9,499
jfw,
Welcome to the forum, glad you found us here at Nosler Reloading.
The only way to get accurate drops is to know exactly what your MV is.
If you were in West MI, I would be happy to clock your loads......
I think based on your load data, you should be close to the 3000 fps mark.
Try the following link to plug in your data. You will need to go to Ballistic Calculator, then click on Advanced Calculator.
http://www.biggameinfo.com/
Make sure you verify the drops at the ranges you intend to shoot.
JD338
Welcome to the forum, glad you found us here at Nosler Reloading.
The only way to get accurate drops is to know exactly what your MV is.
If you were in West MI, I would be happy to clock your loads......
I think based on your load data, you should be close to the 3000 fps mark.
Try the following link to plug in your data. You will need to go to Ballistic Calculator, then click on Advanced Calculator.
http://www.biggameinfo.com/
Make sure you verify the drops at the ranges you intend to shoot.
JD338
- Thread starter
- #5
Thanks for the responses guys. I intend on practicing at different ranges once I find the "right" load. What do you guys think my muzzle velocity is using 55gr of powder? I am not overly concerned with speed, I would just like to be able to figure my bullet drop. Thanks guys! JWF
- Nov 4, 2004
- 25,516
- 9,499
jwf,
There is really no way to guess MV, you need a chronigraph.
What you could do is sight it at 200 yds and then shoot at 100, 300, and 400 yds measuring the bullet impacts. Take that data and use the ballistic calculator to reverse engineer it. It will get you close.
JD338
There is really no way to guess MV, you need a chronigraph.
What you could do is sight it at 200 yds and then shoot at 100, 300, and 400 yds measuring the bullet impacts. Take that data and use the ballistic calculator to reverse engineer it. It will get you close.
JD338
- Oct 30, 2004
- 24,399
- 3,336
Welcome to the family.....
Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Nosler AccuBond 54987
Cartridge O.A.L. L6: 3.340 inch or 84.84 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : IMR 4831
Predicted data by increasing and decreasing the given charge,
incremented in steps of 3.0% 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
-30.0 72 38.50 2113 1289 22051 8201 85.5 1.629
-27.0 75 40.15 2202 1400 24397 8703 87.8 1.570
-24.0 79 41.80 2292 1516 26999 9193 90.0 1.512
-21.0 82 43.45 2382 1638 29844 9665 92.0 1.456
-18.0 85 45.10 2472 1764 32926 10114 93.7 1.403
-15.0 88 46.75 2562 1895 36307 10536 95.3 1.351
-12.0 91 48.40 2652 2031 40023 10926 96.7 1.289
-09.0 94 50.05 2742 2170 44107 11281 97.8 1.231
-06.0 97 51.70 2831 2314 48599 11595 98.7 1.176
-03.0 100 53.35 2920 2461 53542 11866 99.4 1.124
+00.0 103 55.00 3007 2611 58987 12090 99.8 1.074 ! Near Maximum !
+03.0 106 56.65 3094 2764 64995 12264 100.0 1.028 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 58.30 3180 2919 71636 12398 100.0 0.984 !DANGEROUS LOAD-DO NOT USE!
+09.0 113 59.95 3264 3076 78992 12521 100.0 0.942 !DANGEROUS LOAD-DO NOT USE!
+12.0 116 61.60 3348 3236 87163 12636 100.0 0.902 !DANGEROUS LOAD-DO NOT USE!
+15.0 119 63.25 3431 3398 96267 12740 100.0 0.864 !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 103 55.00 3132 2831 70745 11634 100.0 0.993 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 55.00 2827 2307 47469 12050 95.8 1.182
Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Nosler AccuBond 54987
Cartridge O.A.L. L6: 3.340 inch or 84.84 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : IMR 4831
Predicted data by increasing and decreasing the given charge,
incremented in steps of 3.0% 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
-30.0 72 38.50 2113 1289 22051 8201 85.5 1.629
-27.0 75 40.15 2202 1400 24397 8703 87.8 1.570
-24.0 79 41.80 2292 1516 26999 9193 90.0 1.512
-21.0 82 43.45 2382 1638 29844 9665 92.0 1.456
-18.0 85 45.10 2472 1764 32926 10114 93.7 1.403
-15.0 88 46.75 2562 1895 36307 10536 95.3 1.351
-12.0 91 48.40 2652 2031 40023 10926 96.7 1.289
-09.0 94 50.05 2742 2170 44107 11281 97.8 1.231
-06.0 97 51.70 2831 2314 48599 11595 98.7 1.176
-03.0 100 53.35 2920 2461 53542 11866 99.4 1.124
+00.0 103 55.00 3007 2611 58987 12090 99.8 1.074 ! Near Maximum !
+03.0 106 56.65 3094 2764 64995 12264 100.0 1.028 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 58.30 3180 2919 71636 12398 100.0 0.984 !DANGEROUS LOAD-DO NOT USE!
+09.0 113 59.95 3264 3076 78992 12521 100.0 0.942 !DANGEROUS LOAD-DO NOT USE!
+12.0 116 61.60 3348 3236 87163 12636 100.0 0.902 !DANGEROUS LOAD-DO NOT USE!
+15.0 119 63.25 3431 3398 96267 12740 100.0 0.864 !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 103 55.00 3132 2831 70745 11634 100.0 0.993 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 55.00 2827 2307 47469 12050 95.8 1.182
- Thread starter
- #9
- Oct 30, 2004
- 24,399
- 3,336
Depends how each individual barrel "receives" each style of bullet.
However in most guns that I have worked with both were about the same.
However in most guns that I have worked with both were about the same.
CAhunter,
The Browning is a stainless A-bolt. It will shoot under 1/2" three shot groups at 100 yards with two different loads. Both 58.5 and 60.0 grains of H4831SC, both loads are over 3000 FPS and COAL is 3.354" This is with the 130 grain Nosler AccuBond.
The same rifle will shoot under 1/2" with 150 Nosler Partitions. I hesitate to give the load in that it is over the maximum of H4831SC. COAL of 3.340".
I am looking forward to taking the 130 E-Tip for a test drive with this rifle. We don't have any in the shop presently.
The usual disclaimer applies here. These are loads for my rifle. Start low and work up looking for pressure signs. The primers used in all loads are Federal 210.
Jerry 919
Bend, Oregon
The Browning is a stainless A-bolt. It will shoot under 1/2" three shot groups at 100 yards with two different loads. Both 58.5 and 60.0 grains of H4831SC, both loads are over 3000 FPS and COAL is 3.354" This is with the 130 grain Nosler AccuBond.
The same rifle will shoot under 1/2" with 150 Nosler Partitions. I hesitate to give the load in that it is over the maximum of H4831SC. COAL of 3.340".
I am looking forward to taking the 130 E-Tip for a test drive with this rifle. We don't have any in the shop presently.
The usual disclaimer applies here. These are loads for my rifle. Start low and work up looking for pressure signs. The primers used in all loads are Federal 210.
Jerry 919
Bend, Oregon
Hi I have been loading for my 270 win for almost 40 years.
I know use 130 gr. AccuBond and IMR 4350 powder it is getting under .5 with my leadsled and it is @ 2900 & change.
I will pm you the load it is not over max.
PS. I use the same load for my partitions as well. However they are just over.5 @ 100moa.
I know use 130 gr. AccuBond and IMR 4350 powder it is getting under .5 with my leadsled and it is @ 2900 & change.
I will pm you the load it is not over max.
PS. I use the same load for my partitions as well. However they are just over.5 @ 100moa.
