Quickload help for 7mm Rem Mag with RL26???

[MAinAR]

You guys info here is the most helpful on the net for load data, been reading the forum for a long time but this is my first post needing help.

I am looking for QL load data for the new RL26 powder and thought maybe someone here could help me........my goal is to see how much of it I can actually shoot in my 7mm Remington Magnum Sendero with 26" barrel.

Loads I have tested are not giving me quite the speed so wondering about how much more I can actually test. Alliant say with the 140AB max load is at 71.2 grains.

Loads I have tested so far have given excellent accuracy.

Loads shot in 26" barrel as follows with RL26 and no pressure signs at all yet but not going any higher til get some ideal of approx pressures: (magneto speed velocities)
71gr at 3140fps
71.5 at 3158fps
72gr at 3180fps

Load is with:
140 AB in Nosler Brass at 3.26 OAL
Fed215gm primer

If anyone can help please run QL for me at 63,000psi instead of the anemic saami 61,000.

Powders I have in hand are RL22, MRP, N165, RL23 and RL26.

Any info would be much appreciated.

 

[DrMike]

Welcome aboard, MAinAR. Unfortunately, you likely are not going to get a QL projection just yet. The current update does not contain RL26. It should be available shortly, however. I take it you have found some RL26, though?

 

[MAinAR]

Welcome aboard, MAinAR. Unfortunately, you likely are not going to get a QL projection just yet. The current update does not contain RL26. It should be available shortly, however. I take it you have found some RL26, though?

Thank you. Yes sir picked up 2 lbs and have really liked the accuracy and consistency it is giving me. Was hoping QL had the data in the update cause burn rate i am seeing is definitely slower than RL25, maybe even slower than H1000.

It is very compressed in bulk density as well with VMD at .0670.

My son has a 27" brux barrel 280 Ackley and with this powder I can see him getting over 65grains in the case under the 150LRAB (if doesn't max out on pressure before that),,,, gonna test it in the 280AI soon as well, will start at like 62 grain under 150 LRAB and see where it goes. He is currently running the 140AB with 60gr of Imr4831 at 3,260 with one hole accuracy.

I would probably be going the LRAB route myself if didn't already have shoe box full of 140AB's

 

[MAinAR]

Until you get RL23 & 26 update it would still help if I knew where pressure predictions hit 63,000 with MRP and 140 AB in Nosler brass with 215gm primer if you get time. Testing it next. So glad to see it available stateside again.

My best loads in the 7RM have always seemed to be a bit over book in this gun.

 

[DrMike]

If you are looking for 63K psi, you will be tickling he dragon's tail at about 71.2 grains of MRP (~62952 psi).

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 140, Nosler AccuBond 59992
Useable Case Capaci: 73.707 grain H2O = 4.786 cm³
Cartridge O.A.L. L6: 3.260 inch = 82.80 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Norma MRP

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   79    56.24   2619    2133   30068  10155     92.0    1.604
-18.0   81    57.65   2688    2246   32196  10478     93.3    1.564
-16.0   83    59.05   2757    2363   34477  10787     94.5    1.524
-14.0   85    60.46   2826    2482   36928  11078     95.7    1.485
-12.0   87    61.86   2894    2604   39557  11350     96.7    1.436
-10.0   89    63.27   2963    2729   42402  11602     97.6    1.390
-08.0   91    64.68   3032    2857   45455  11831     98.3    1.346
-06.0   93    66.08   3100    2987   48749  12037     98.9    1.304
-04.0   95    67.49   3168    3119   52301  12217     99.4    1.263  ! Near Maximum !
-02.0   97    68.89   3235    3253   56112  12370     99.7    1.223  ! Near Maximum !
+00.0   99    70.30   3302    3389   60186  12496     99.9    1.185  ! Near Maximum !
+02.0  101    71.71   3368    3527   64564  12593    100.0    1.149  !DANGEROUS LOAD-DO NOT USE!
+04.0  103    73.11   3434    3665   69274  12674    100.0    1.114  !DANGEROUS LOAD-DO NOT USE!
+06.0  105    74.52   3499    3806   74347  12751    100.0    1.080  !DANGEROUS LOAD-DO NOT USE!
+08.0  107    75.92   3563    3947   79818  12823    100.0    1.047  !DANGEROUS LOAD-DO NOT USE!
+10.0  109    77.33   3627    4090   85725  12890    100.0    1.015  !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     99    70.30   3448    3696   73811  11991    100.0    1.091  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     99    70.30   3086    2961   47442  12486     95.9    1.312

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 140, Nosler AccuBond 59992
Useable Case Capaci: 73.707 grain H2O = 4.786 cm³
Cartridge O.A.L. L6: 3.260 inch = 82.80 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Norma MRP

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   80    56.96   2655    2191   31141  10322     92.7    1.583
-18.0   82    58.38   2724    2307   33372  10642     94.0    1.543
-16.0   84    59.81   2794    2426   35773  10946     95.2    1.503
-14.0   86    61.23   2864    2549   38349  11230     96.2    1.457
-12.0   88    62.66   2933    2674   41129  11495     97.2    1.410
-10.0   90    64.08   3003    2803   44132  11737     98.0    1.365
-08.0   92    65.50   3072    2933   47364  11955     98.7    1.321
-06.0   94    66.93   3141    3066   50854  12148     99.2    1.279
-04.0   96    68.35   3209    3201   54614  12314     99.6    1.238  ! Near Maximum !
-02.0   98    69.78   3277    3338   58634  12453     99.9    1.199  ! Near Maximum !
+00.0  100    71.20   3344    3477   62952  12562    100.0    1.162  ! Near Maximum !
+02.0  102    72.62   3411    3617   67600  12647    100.0    1.126  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    74.05   3477    3759   72609  12726    100.0    1.091  !DANGEROUS LOAD-DO NOT USE!
+06.0  106    75.47   3543    3901   78013  12800    100.0    1.057  !DANGEROUS LOAD-DO NOT USE!
+08.0  108    76.90   3608    4046   83852  12870    100.0    1.025  !DANGEROUS LOAD-DO NOT USE!
+10.0  110    78.32   3672    4192   90171  12935    100.0    0.994  !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    100    71.20   3487    3780   77141  12052    100.0    1.070  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    100    71.20   3132    3049   49578  12647     96.5    1.285

 

[MAinAR]

Thank you that is what I needed to know. Very much appreciated.

 

[FOTIS]

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 140, Nosler AccuBond 59992
Useable Case Capaci: 73.726 grain H2O = 4.787 cm³
Cartridge O.A.L. L6: 3.260 inch = 82.80 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Alliant Reloder-26

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   79    57.60   2636    2160   29336  10543     95.0    1.626
-18.0   81    59.04   2707    2278   31490  10849     96.2    1.583
-16.0   83    60.48   2779    2400   33815  11130     97.3    1.540
-14.0   85    61.92   2850    2525   36328  11384     98.2    1.497
-12.0   87    63.36   2921    2652   39045  11608     98.9    1.449
-10.0   89    64.80   2992    2782   41987  11801     99.5    1.400
-08.0   91    66.24   3062    2914   45177  11960     99.8    1.354
-06.0   93    67.68   3131    3047   48636  12085    100.0    1.309
-04.0   95    69.12   3200    3182   52393  12179    100.0    1.266
-02.0   97    70.56   3267    3319   56474  12267    100.0    1.224  ! Near Maximum !
+00.0   99    72.00   3334    3456   60866  12351    100.0    1.184  ! Near Maximum !
+02.0  101    73.44   3401    3595   65605  12430    100.0    1.146  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    74.88   3466    3735   70730  12505    100.0    1.109  !DANGEROUS LOAD-DO NOT USE!
+06.0  104    76.32   3532    3878   76279  12575    100.0    1.073  !DANGEROUS LOAD-DO NOT USE!
+08.0  106    77.76   3597    4022   82298  12640    100.0    1.039  !DANGEROUS LOAD-DO NOT USE!
+10.0  108    79.20   3661    4167   88838  12699    100.0    1.006  !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     99    72.00   3475    3753   76361  11844    100.0    1.084  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     99    72.00   3116    3019   46826  12810     98.4    1.320

 

[MAinAR]

Thank you FOTIS, the QL on the RL 26 is a lot of help, I know what to do know. Just got 1k Fed 215gm primers back in hand so I will go back to work on it....... It is giving excellent accuracy at 72gr.

 

[FOTIS]

Great

 

[FOTIS]

And Welcome aboard, MAinAR

 

[SJB358]

Welcome aboard!

Seems like 26 should work real darned well with that combo!

 

[MAinAR]

Welcome aboard!

Seems like 26 should work real darned well with that combo!

It sure has consistently given low ES's and exceptional accuracy. It has not shot a single group over an inch (most well under) since starting at 68gr and working up to now at 72gr.

Only thing is with it being "new" I have no idea what to really expect for temperature stability. It is in the upper 30's and low 40's when I have been testing it so will have to period check as temp's raise up over the year.

Alliant states it is a predictable 0.5 fps per degree of temp change in this type load, but heard that before too, we will see. The magnetospeed DON"T lie.

 

[SJB358]

I'm just about out of 25 and 22, so this next buy I'll be replacing them with 23 and 26. Never had too much trouble with any Alliant powders, but if the new ones are a little more temp resistant I can't see not changing it up.

 

[MAinAR]

I'm just about out of 25 and 22, so this next buy I'll be replacing them with 23 and 26. Never had too much trouble with any Alliant powders, but if the new ones are a little more temp resistant I can't see not changing it up.

Have tested the RL23 also in couple different calibers and bullet weights...............it appears to have just as flat a temperature response as advertised. Just like RL17!! May very well be the best Reloder series yet!

Funny thing with it is in some loads burn rate acts a grain faster than RL22 and others it is about a grain slower, burn rate not fps. As with any powders on the burn rate chart it can move up or down based on application but I have found it to be within one grain up or down of RL22 from .243 to 7RM.

 

[JD338]

RL 26 looks promising.

JD338

 

[FOTIS]

I'm just about out of 25 and 22, so this next buy I'll be replacing them with 23 and 26. ..............................

UP smart move. RL22 is my savior powder. I hope 23 proves just as good!

 

[SJB358]

Great info fellas. I've found a bunch of 23 and 26. I really like 17 as well. To be honest I like most all of Alliants offerings. They've done very well for me over the years.

 

[JD338]

Great info fellas. I've found a bunch of 23 and 26. I really like 17 as well. To be honest I like most all of Alliants offerings. They've done very well for me over the years.

Same here.
I've burned a lot of RL22 in the 280AI as well as the 338 RUM with 200-210 gr loads and I have never had any problems with it. I sure hope RL23 will be as good or better than RL22.

JD338

 

[RiverRider]

How do you go about finding an update for QL that has Re23 and Re26 in it? I've looked and find myself in a very dark room, blindfolded. I'm hoping LT-32 would be included in the next update also.

And about Re23...if it really IS close to Re22, I may just have to try some in my .280 again. I got some spectacular performance with Re22 but abandoned it over temp tolerance.

 

[MAinAR]

I would say QL is really close here as I hit "sticky" bolt lift at 3,290 this afternoon at 72.5 gr of RL 26 in 26" tube 7 Rem Mag with 140AB!!!! BUT I changed primers to Fed215GM

72gr had es of 23 at 3250 avg and was well under moa.