.223 with 40gr bullets and RL7

D

desertcj

Handloader
Sep 27, 2010
929
222
So there's a thread on 24hour campfire where a couple guys are talking about this and it has me wondering what this would look like in Quickload. Noslers 40gr data shows 23.5gr max of RL7. They were starting there and went up to 27gr. Stating 4000fps, which I'm inclined to believe. My question is at what pressure and also what would this look like velocity wise from a 20" barrel? I'd be using the 40gr lead free ballistic tip although the 35gr version seems more plausible.
 
desertcj":16dkswk6 said:
So there's a thread on 24hour campfire where a couple guys are talking about this and it has me wondering what this would look like in Quickload. Noslers 40gr data shows 23.5gr max of RL7. They were starting there and went up to 27gr. Stating 4000fps, which I'm inclined to believe. My question is at what pressure and also what would this look like velocity wise from a 20" barrel? I'd be using the 40gr lead free ballistic tip although the 35gr version seems more plausible.
Click to expand...
Hi if you go on Nosler web site they will tell you what you want to know .


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Daniel1":3veexodp said:
desertcj":3veexodp said:
So there's a thread on 24hour campfire where a couple guys are talking about this and it has me wondering what this would look like in Quickload. Noslers 40gr data shows 23.5gr max of RL7. They were starting there and went up to 27gr. Stating 4000fps, which I'm inclined to believe. My question is at what pressure and also what would this look like velocity wise from a 20" barrel? I'd be using the 40gr lead free ballistic tip although the 35gr version seems more plausible.
Click to expand...
Hi if you go on Nosler web site they will tell you what you want to know .


Sent from my iPad using Tapatalk
Click to expand...

??? No they won't. The load data from Nosler shows 23.5gr max. These guys are going above that. Way above that. I'd like to see a Quickload prediction to see what kind of pressure is going on at those levels.
 
desertcj":528647mg said:
So there's a thread on 24hour campfire where a couple guys are talking about this and it has me wondering what this would look like in Quickload. Noslers 40gr data shows 23.5gr max of RL7. They were starting there and went up to 27gr. Stating 4000fps, which I'm inclined to believe. My question is at what pressure and also what would this look like velocity wise from a 20" barrel? I'd be using the 40gr lead free ballistic tip although the 35gr version seems more plausible.
Click to expand...

Yup! Pressured up, for sure.

Code: 
Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 40, Nosler BalTip 39510
Useable Case Capaci: 26.820 grain H2O = 1.741 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 20.0 inch = 508.0 mm
Powder             : Alliant Reloder-7

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  102    24.30   3602    1153   59032   7842     99.0    0.764  !DANGEROUS LOAD-DO NOT USE!
-09.0  103    24.57   3639    1176   61203   7889     99.2    0.753  !DANGEROUS LOAD-DO NOT USE!
-08.0  104    24.84   3675    1200   63457   7931     99.4    0.741  !DANGEROUS LOAD-DO NOT USE!
-07.0  105    25.11   3711    1223   65797   7970     99.6    0.730  !DANGEROUS LOAD-DO NOT USE!
-06.0  106    25.38   3747    1247   68227   8005     99.7    0.719  !DANGEROUS LOAD-DO NOT USE!
-05.0  107    25.65   3782    1271   70751   8035     99.8    0.708  !DANGEROUS LOAD-DO NOT USE!
-04.0  108    25.92   3818    1294   73375   8061     99.9    0.697  !DANGEROUS LOAD-DO NOT USE!
-03.0  110    26.19   3853    1318   76103   8082    100.0    0.687  !DANGEROUS LOAD-DO NOT USE!
-02.0  111    26.46   3888    1342   78939   8099    100.0    0.677  !DANGEROUS LOAD-DO NOT USE!
-01.0  112    26.73   3922    1367   81890   8113    100.0    0.667  !DANGEROUS LOAD-DO NOT USE!
+00.0  113    27.00   3957    1391   84962   8126    100.0    0.657  !DANGEROUS LOAD-DO NOT USE!
+01.0  114    27.27   3991    1415   88161   8138    100.0    0.647  !DANGEROUS LOAD-DO NOT USE!
+02.0  115    27.54   4025    1439   91493   8149    100.0    0.638  !DANGEROUS LOAD-DO NOT USE!
+03.0  116    27.81   4059    1464   94966   8159    100.0    0.629  !DANGEROUS LOAD-DO NOT USE!
+04.0  117    28.08   4093    1488   98588   8169    100.0    0.620  !DANGEROUS LOAD-DO NOT USE!
+05.0  119    28.35   4127    1513  102367   8177    100.0    0.611  !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    113    27.00   4074    1474   99917   7817    100.0    0.617  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    113    27.00   3779    1268   70115   8361     98.4    0.712  !DANGEROUS LOAD-DO NOT USE!
 
Code: 
Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 40, Nosler BalTip 39510
Useable Case Capaci: 26.820 grain H2O = 1.741 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 20.0 inch = 508.0 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 54270 psi, or 374 MPa
or a maximum loading ratio or filling of 112 %
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 !

Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Accurate 2520                      111.6     29.1     1.89    3565    92.5    54270    8472   0.788  ! Near Maximum !
Rottweil R901                      112.0     26.3     1.70    3521    93.3    54067    8260   0.810  ! Near Maximum !
Lovex D073.5                       106.1     28.1     1.82    3502    91.3    54270    8111   0.801  ! Near Maximum !
Accurate 2460                      105.8     28.1     1.82    3502    91.3    54270    8111   0.801  ! Near Maximum !
Accurate 2495                      112.0     27.1     1.76    3498    95.4    47623    8633   0.848  ! Near Maximum !
Lovex D073.6                       112.0     28.5     1.85    3478    91.1    49911    8303   0.817  ! Near Maximum !
SNPE Vectan SP 7                   110.2     29.2     1.89    3438    83.9    54270    7826   0.798  ! Near Maximum !

Code: 
Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 40, Nosler BalTip 39510
Useable Case Capaci: 26.820 grain H2O = 1.741 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 20.0 inch = 508.0 mm
Powder             : Hodgdon Benchmark

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    23.58   3090     848   38368   6826     84.3    0.925
-09.0   98    23.84   3125     867   39663   6923     85.0    0.911
-08.0   99    24.10   3160     887   41004   7019     85.7    0.898
-07.0  100    24.37   3196     907   42393   7113     86.3    0.884
-06.0  101    24.63   3232     927   43833   7206     87.0    0.871
-05.0  102    24.89   3267     948   45326   7298     87.6    0.858
-04.0  103    25.15   3303     969   46873   7388     88.3    0.846  ! Near Maximum !
-03.0  104    25.41   3339     990   48476   7477     88.9    0.833  ! Near Maximum !
-02.0  105    25.68   3374    1011   50139   7563     89.5    0.821  ! Near Maximum !
-01.0  107    25.94   3410    1033   51864   7648     90.1    0.809  ! Near Maximum !
+00.0  108    26.20   3446    1055   53654   7731     90.6    0.797  ! Near Maximum !
+01.0  109    26.46   3482    1077   55512   7812     91.2    0.785  !DANGEROUS LOAD-DO NOT USE!
+02.0  110    26.72   3518    1099   57440   7891     91.7    0.774  !DANGEROUS LOAD-DO NOT USE!
+03.0  111    26.99   3554    1122   59443   7968     92.3    0.763  !DANGEROUS LOAD-DO NOT USE!
+04.0  112    27.25   3590    1145   61523   8043     92.8    0.752  !DANGEROUS LOAD-DO NOT USE!
+05.0  113    27.51   3626    1168   63685   8115     93.3    0.741  !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    26.20   3637    1175   63313   8024     96.4    0.740  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    108    26.20   3215     918   44432   7165     82.3    0.870


Code: 
Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 40, Nosler BalTip 39510
Useable Case Capaci: 26.820 grain H2O = 1.741 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 20.0 inch = 508.0 mm
Powder             : Alliant Reloder-7

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   89    21.24   3180     898   39231   7057     94.5    0.916
-09.0   90    21.48   3213     917   40489   7133     95.0    0.903
-08.0   91    21.71   3246     936   41786   7206     95.5    0.890
-07.0   92    21.95   3279     955   43125   7276     95.9    0.877
-06.0   93    22.18   3312     974   44505   7345     96.3    0.865
-05.0   94    22.42   3345     994   45930   7411     96.7    0.853
-04.0   95    22.66   3378    1013   47399   7474     97.0    0.841  ! Near Maximum !
-03.0   96    22.89   3410    1033   48915   7535     97.4    0.830  ! Near Maximum !
-02.0   97    23.13   3443    1053   50480   7593     97.7    0.818  ! Near Maximum !
-01.0   98    23.36   3475    1073   52095   7649     98.0    0.807  ! Near Maximum !
+00.0   99    23.60   3508    1093   53762   7702     98.3    0.796  ! Near Maximum !
+01.0  100    23.84   3540    1113   55483   7752     98.6    0.785  !DANGEROUS LOAD-DO NOT USE!
+02.0  101    24.07   3572    1133   57260   7799     98.8    0.774  !DANGEROUS LOAD-DO NOT USE!
+03.0  102    24.31   3604    1153   59095   7843     99.0    0.764  !DANGEROUS LOAD-DO NOT USE!
+04.0  103    24.54   3635    1174   60990   7884     99.2    0.754  !DANGEROUS LOAD-DO NOT USE!
+05.0  104    24.78   3667    1194   62949   7922     99.4    0.744  !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    23.60   3660    1190   63505   7549    100.0    0.740  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     99    23.60   3302     968   44263   7498     92.8    0.869
 
OK, that is interesting. RL7 does look really good in a 20" barrel! Thank you.
 
It depends on the brass Hornady brass is good and Lapua brass is good. Winchester brass should be checked .


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I always size new brass and trim it. Just too much hassle to deal with surprises later in loading process or in the field.


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