Any recipes for 270 win and 150gr ABLR?

[The Oregonian]

I have H4831SC and H4350. I used 4350 from 50gr to 52gr and got flattened primers above 51gr and couldn't get any decent results...high ES on velocity. Hodgdon recommends a max of 49gr.

I am open to Hodgdon 4831 or 4350...actually open to anything, but would prefer to use powders I already have due to lack of availability.

Using Nosler brass, fed 210M in an off the shelf A-bolt with 22" barrel.

Thanks in advance.

 

[Ridgerunner665]

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

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63000 psi, or 434 MPa
or a maximum loading ratio or filling of 107 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

83 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Norma MRP 104.4 58.7 3.81 2980 99.6 63000 13760 1.088 ! Near Maximum !
Vihtavuori N560 106.1 58.5 3.79 2968 97.4 63000 13985 1.085 ! Near Maximum !
IMR 7828 SSC 104.6 57.9 3.75 2953 97.7 63000 13532 1.076 ! Near Maximum !
Alliant Reloder-22 106.3 58.0 3.76 2947 98.8 63000 13497 1.090 ! Near Maximum !
ADI AR 2213 105.5 57.5 3.73 2938 97.6 63000 13386 1.076 ! Near Maximum !
Alliant Reloder-17 93.6 53.0 3.43 2924 100.0 63000 12141 1.091 ! Near Maximum !
ADI AR 2209 102.3 54.9 3.56 2905 98.6 63000 12755 1.082 ! Near Maximum !
Alliant Reloder-19 102.9 55.5 3.60 2903 98.7 63000 12833 1.090 ! Near Maximum !
Ramshot Hunter 98.4 54.8 3.55 2900 99.9 63000 12479 1.096 ! Near Maximum !
Hodgdon H414 92.9 53.0 3.44 2896 99.6 63000 12507 1.098 ! Near Maximum !
Winchester 760 92.9 53.0 3.44 2896 99.6 63000 12507 1.098 ! Near Maximum !
Winchester WXR 107.0 57.1 3.70 2882 98.1 58654 13295 1.127 ! Near Maximum !
Norma URP 97.9 52.3 3.39 2879 100.0 63000 11945 1.103 ! Near Maximum !
Norma 204 97.6 54.4 3.52 2879 98.5 63000 12489 1.091 ! Near Maximum !
Vihtavuori N550 95.1 52.4 3.40 2879 100.0 63000 12088 1.107 ! Near Maximum !
Hodgdon H4831 SC 104.0 56.7 3.68 2876 96.9 63000 12594 1.087 ! Near Maximum !
Accurate 4350 97.1 52.4 3.39 2875 100.0 63000 11917 1.119 ! Near Maximum !
IMR 4831 102.8 53.1 3.44 2862 100.0 63000 11693 1.111 ! Near Maximum !
Winchester Supreme 780 101.4 57.7 3.74 2856 98.5 63000 12176 1.094 ! Near Maximum !
ADI AP 2214 107.0 59.9 3.88 2851 96.8 57959 12979 1.116 ! Near Maximum !
IMR 7828 107.0 56.1 3.63 2846 96.4 56118 13149 1.136 ! Near Maximum !
Hodgdon H4350 100.3 52.9 3.43 2842 99.2 63000 11831 1.096 ! Near Maximum !
IMR 4350 98.4 52.8 3.42 2841 99.3 63000 11808 1.096 ! Near Maximum !
Hodgdon H4831 107.0 56.1 3.63 2840 96.5 60525 12463 1.107 ! Near Maximum !
Hodgdon Hybrid 100V 100.5 52.5 3.40 2840 100.0 63000 11016 1.103 ! Near Maximum !
Hodgdon H380 90.5 49.9 3.23 2838 100.0 63000 11525 1.110 ! Near Maximum !
IMR 4320 91.1 48.3 3.13 2826 100.0 63000 10957 1.094 ! Near Maximum !
Norma 203 old 90.7 49.5 3.21 2825 100.0 63000 11085 1.122 ! Near Maximum !
Alliant Reloder-25 107.0 57.4 3.72 2823 99.7 52585 12990 1.173
IMR 4007 SSC 92.3 50.5 3.27 2822 99.3 63000 11650 1.105 ! Near Maximum !
Vihtavuori N165 107.0 57.1 3.70 2812 98.7 60062 11881 1.122 ! Near Maximum !
Hodgdon VARGET 92.0 48.0 3.11 2811 100.0 63000 10969 1.097 ! Near Maximum !
ADI AR 2208 91.7 48.0 3.11 2811 100.0 63000 10969 1.097 ! Near Maximum !
IMR 4064 92.5 47.1 3.05 2802 100.0 63000 10762 1.102 ! Near Maximum !
Vihtavuori N160 107.0 55.3 3.59 2796 97.1 60382 11804 1.116 ! Near Maximum !
Accurate 4064 90.2 47.6 3.08 2781 100.0 63000 10395 1.143 ! Near Maximum !
Accurate 2700 92.5 52.1 3.37 2777 99.1 63000 11014 1.108 ! Near Maximum !
Vihtavuori N150 98.0 49.9 3.23 2777 100.0 63000 10367 1.114 ! Near Maximum !
Vihtavuori N135 94.2 46.1 2.99 2732 100.0 63000 9583 1.126 ! Near Maximum !
Hodgdon H1000 107.0 57.1 3.70 2677 94.1 48111 12279 1.219
ADI AR 2217 107.0 57.1 3.70 2677 94.1 48111 12279 1.219

 

[Thebear_78]

I’ll be watching this topic very closely. My pac nor 1-8 twist featherlight barrel is in the mail !!

I have been using Re17, and 7828 and H414 quite a bit. I picked up a pound of Re22 and norma MRP to try out too.

 

[bobnob]

I'm using 57.5 to 59.0g of H4831SC with a variety of 150g bullets. Mine has a bit of an oversized chamber and can take higher charges.

Getting speeds 2850 to 2970fps and real good accuracy with most bullets. I'd being going straight to that powder and starting with a charge about 55g, with the ABLR.

I'd love to try that bullet but I have hundreds of yellow-box Partitions that should see me through for a good few years of hunting. After I get through those perhaps.

 

[The Oregonian]

Thanks...I had been thinking 4831 would give better results but haven't had a chance to load some up...hopefully this weekend to load and shoot.

By the way, last I looked Cabela's had the 270 cal 150gr LRAB on sale for 20% off but not sure how long that sale lasts.

Will report back after I try the 4831.

 

[BD1]

I'd consider starting with 53 grs. of H4831 ( a mid-book load) with your Fed 210's and work my way up watching the chronograph. It would be a rare .270 that didn't dote on those components.

 

[The Oregonian]

I used 51, 52, 52.5, 53, 53.5, 54, and 54.5. I got primer flattening at 54 so didn't shoot but a couple of those. These were all .015 shorter than Browning mag length of 3.387, so COAL was 3.372.

51gr showed the most promise (.75 MOA for 6 shot group) so going back out with 50.7, 51, 51.3, and 51.6. Going to try 3.340 COAL and see what that does but also bring along the original 3.372 to confirm that as well.

The 51gr load was ~2600 fps...I can live with that as I will be shooting at deer at 500 yds or in. Will report back as I get more results.

 

[bobnob]

Oregonian,

2600fps will do the job, but flattened primer or not, that's a very mild load.

I am not telling you what to do. Sorry if it sounds like that. But it seems odd to be launching that sleek bullet at not much better than 30-30 velocities.

Your accuracy is very good of course.

Regards.

- Bob

 

[The Oregonian]

Understood - I would like to get the velocity up some...but this is my first time reloading (have done maybe 100 rounds so far) and my first load development, so right now I am just trying to read the results the right way and find the most accurate load in my gun.

After I get something workable I will try to find a faster load that also has good accuracy.

 

[BD1]

Seems mild for a .270 to me also... Though you are shooting a 4 inch shorter barrel than Noslers pressure barrel which is turning about 100 ft more fps with similar components and load, its also assuming a 25fps loss for every inch of your barrel length.
When you mention primer "flattening", to what extent are you talking about ?? Mildly flat or dead flat with significant mushrooming around bottom edge of the cup ?? A pic may be helpful.....I've had "flattened" primers when using factory high energy loads and handloads with no issue. I appreciate your comment that you are new to this and would never suggest in any way, shape or form for anyone to push the envelope or do anything unsafe. That said, I've experienced accuracy starting to fall off as charges were increased during load development only to have them come back to stellar accuracy near top loads while watching the chrony and for pressure signs.
One would like to think with a 22 inch spout and your components, you would be all over the top of 2750- 2800fps fairly easily with good accuracy given most book data and QL projections. It also may be your rifle just doesn't care for the bullet.........
It would be interesting if you had some factory loaded 150's on hand to compare the chrony results with them compared to your handloads and examine the primers while you're at it. There may also be a remote possibility that your chrony is giving you inaccurate readings.......
I haven't played with the ABLR's in a .270 maybe some others can jump in here also and give their thoughts.

Good luck,
BD

 

[The Oregonian]

Will post pics tonight...would be very interested to hear some opinions on them. I agree it is a mild load...I have gotten somewhere between 3000 and 3100 from factory Nosler AB 130's.

I shot those as foulers last time and got .75 MOA on a 3 shot group, so it tends to like those pretty well for factory ammo.

 

[BD1]

That's good and informative, since you've mentioned flattened primers did you happen to look at the primers on the spent factory cartridges and see how they might compare to your spent handloads?

 

[bobnob]

Ok Oregonian, good news that you are walking before running with the handloading. Good idea to take it slow.

BD1 is right. Accuracy "nodes" as I've heard them called can disappear and reappear as charges are increased.

2800fps should be very safely reachable in a 22 inch barrel. You want a good accurate load first and foremost though.

Primer flattening doesn't necessarily mean you're over pressure. Watch the numbers your chrono is giving you, and compare them to manual data when the manual data is using like components.

 

[vodekzz]

With 22 inch Sako 85 RL22 58 gr charge with 150 bullet, I would get 2850 FPS and accurate.
This is good enough velocity for me, Vodek