270 Load for Browning A-Bolt

[Army SGM Retired]

All, Trying to come up with a load that has good grouping coupled with Velocity. Just to let you know I’m new at this reloading as you can tell from the other topic I have had going ref 270 load for Caribou. If you have any recipes out there that I could use I sure could use some help here. I shot today some loads using 140 AccuBond and Winchester brass, Win WLR primers, and H4831sc , IMR 4831. Thanks for you help.

 

[CAhunter]

I would use the 140gr AccuBond and load it over H4831sc or RL22.. My best load came from h4831sc loaded .035 off the lands.

 

[1Shot]

This is a pretty standard load that shoots very well in about all 270 Wins.
60 grs H-4831 with a 130 gr bullet. This is a max load so work up to it.

In my Rem 700 with a 24" barrel this is the load I use.
60 gr H-4831, CCI BR-2 primer, 130 Nosler ballistic tip or Sierra, Rem. case, OAl 3.420 and it averages 3150 fps.

 

[SJB358]

I would see if you can find some RL22 and add that to your list of powders SGM. With the 140's you should find something between those three that suits you. Scotty

 

[Army SGM Retired]

Thanks all for the info. 1Shot, would you use the 130 gr on Caribou with that load? CAhunter, A-Bolt is magazine feed so I can only get .0525 off lands now and still have a functioning action. Remember, I’m a beginner at this and I’m about to start walking which is better than crawling. Hope to be slow running before Caribou hunt in 3 weeks. Thanks All.

 

[CAhunter]

Army I feel your pain. Mine 270 is a browning abolt also. I just loaded mine as far out as the magazine would allow and tweaked my powder charge a little. Im sure you should have no problem loading the 140gr AccuBond. Good luck

 

[Antelope_Sniper]

This is a pretty standard load that shoots very well in about all 270 Wins.
60 grs H-4831 with a 130 gr bullet. This is a max load so work up to it.

+1

I also like H4831 with both the 140gr NAB and AB. 57gr for the wife and kids, 59gr for me. Both loads are accurate, but the edge goes to the 57gr charge in our rifles.

 

[1Shot]

I have never shot a caribou myself but everything in North America has been killed with the 270 Win and 130 gr bullets. I have killed some pretty good size deer with the 130 Nosler BT and Sierra. The 130's seem to kill the average deer better than most of the 140's. The 140's are constructed a little heaver most of the time. If you put either one broad side in the lungs of most anything it ain't going to live too long.

 

[Wally]

58.5 grs of H4831 and 140 Accubonds has worked great, for me, in 3 different rifles. This load kills elk stone dead if you do your part. Start a grain to grain and a half lower and work up. Good luck!

Steve

 

[Army SGM Retired]

Sniper, I’m using H4831sc, is there any difference in the straight H4831? I have loaded 57.0 gr of H4831sc with 140 gr accu b and it only gave me a 1.56 group at 2771 velocity. I loaded some at 58.0 and 58.5 today in prep for the range at first light. I still can play with the BOSS that’s on the Browning but would like to get better velocity first and then adjust. 1Shot, I did load some 130 Ballistic Silvertip today due to I ran out of 140 accuB. Hope they prove to be swift and straight. Wally, I will find out at first light your load suggestion, hope it works. I also loaded all of my previous loads using CCI-Br2 primers for another round of shooting. Not sure if that was a waste of bullets but newbie’s like to learn the hard way. Thanks ALL for the info, I’m looking forward to the firing line tomorrow. :?

 

[Wally]

The most important thing to do is have fun. Good Luck!

Steve

 

[Antelope_Sniper]

Good question.
SC stands for "short kernal", it's considered to be the latest and greatest because if meters better. Personally, I can't tell the difference between the two on paper, or over the chronograph, so I use them interchangeable and just refer to both variants as H4831.

 

[Army SGM Retired]

Wally, I am having fun but I’m coming down to the wire in preparation for the hunt.

Sniper , do you own your own chrono? If so will the distance that you place the chrono from muzzle have any issue with the readings??

 

[DrMike]

Muzzle blast can affect chronograph readings. With a 270, however, if your chronograph is set at least ten feet away, it is not likely to be negatively effected.

 

[JD338]

Army SGM Retired

H4831 is the classic powder for the 270 Win. H4831SC is Short Cut for better metering through the powder measure. Same powder and burn rate. RL 22 is also an excellent powder to try.

The 130 gr bullets are just fine for caribou, the 140 gr bullets will retain their velocity better due to their higher BC. They will also buck the wind a little better than the 130 gr bullets.

You already have a good load with the 140 gr AB. Be sure to reshoot it to verify and sight in for 200 yds. Most caribou are shot between 150 and 200 yds. Remember to play the wind if you start shooting out qqt 400 yds.

Where are you going for you Caribou hunt?

JD338

 

[Army SGM Retired]

Thanks Doc for the info, do you think setting the chrono at 20 feet could be an issue?

Also Thanks JD338, I’m planning on staying with the 140 AB, for sure after I shot the 130 Ballistic Silvertip and some did not even hit paper. Not sure what went wrong there, they were at max load but wow. To go from 2 inch groups to off 2 foot square paper is not good. As for the hunt my son and I head off to Labrador fist week of September with Adventure Tunilik. Really looking forward to the trip, hope to post pictures on our return. The pictures might be of land and no Caribou but the country side I’m sure will be beautiful. Have only been to Canada once when I was 7 years old, now at 53 should be an awesome trip especially with my son. More range time next week!!

 

[Badgerfan]

I have found that my A-bolt prefers 55.5gr of H4831 shooting the Nosler BT. I'm using Rem. cases, Fed. 210 primer and COL is at 3.320 which is close to the end of the magazine also.

I'm getting very tight groups but I do not have the BOSS on my gun for further adjustments. For hunting purposes, I think my dime-quarter size groups are fine. Sorry if this was late for your current trip, hope it helps for the future.

 

[Army SGM Retired]

Badgerfan, No it's not to late yet. Went to the range today and I think I have found the load. Looks like IMR 4831, 57 gr seated at 3.26 OAL. It came in at .63 group size with all touching. The velocity average was 2879 so I think I will load another coulpe of 3 round groups and head back to the range for grouping practise. Thanks for the info.

 

[JD338]

Badgerfan, No it's not to late yet. Went to the range today and I think I have found the load. Looks like IMR 4831, 57 gr seated at 3.26 OAL. It came in at .63 group size with all touching. The velocity average was 2879 so I think I will load another coulpe of 3 round groups and head back to the range for grouping practise. Thanks for the info.

That sounds like a great load. Good to verify again and zero your rifle for 250 yds. You will be good to go out to 400 yds easy.


Max Point blank range is 286 yds when zeroed at 243 yds. Current Zero is 250 yds.
Range
yds Path
in Come Ups
moa+clks Velocity
fps Energy
ft/lbs Windage
moa+clks
Muzzle -1.5 Infinity 2879 2577 NaN
50 1.2 -2 + 1 2783 2408 0 + 1
100 2.8 -2 + 3 2689 2248 0 + 2
150 3.2 -2 + 0 2597 2097 1 + 0
200 2.3 -1 + 0 2508 1955 1 + 1
250 0.0 0 + 0 2420 1820 1 + 2
300 -3.8 1 + 1 2334 1693 2 + 0
350 -9.1 2 + 2 2250 1574 2 + 1
400 -16.2 3 + 3 2168 1461 2 + 3
450 -25.2 5 + 1 2087 1353 3 + 0
500 -36.1 7 + 0 2007 1253 3 + 2

JD338

 

[Antelope_Sniper]

Sniper , do you own your own chrono? If so will the distance that you place the chrono from muzzle have any issue with the readings??

Yes it will. if you place the chronograph too close to the muzzle you will not get a reading, and in some instances you will blow the chronograph over and have to go set it up again. Typically, I set mine up between 10 and 15 feet from the muzzle.