QL 22-250

[nvbroncrider]

Can I get a QL H-380 with a 55BT 20" barrel thanks.

 

[Rem Jim]

39.5 gr H380 CCI 250 primer will shoot GOOD ! :grin: RJ

 

[DrMike]

Cartridge          : .22-250 Rem. (CIP)
Bullet             : .224, 55, Nosler BalTip 39526
Useable Case Capaci: 39.837 grain H2O = 2.587 cm³
Cartridge O.A.L. L6: 2.350 inch = 59.69 mm
Barrel Length      : 20.0 inch = 508.0 mm
Powder             : Hodgdon H380

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    29.68   2731     911   29424   9419     82.0    1.187
-18.0   81    30.42   2803     960   31456   9765     83.6    1.158
-16.0   83    31.16   2876    1010   33629  10107     85.1    1.129
-14.0   85    31.91   2949    1062   35956  10442     86.6    1.101
-12.0   87    32.65   3023    1116   38445  10770     88.0    1.067
-10.0   89    33.39   3097    1171   41110  11089     89.4    1.033
-08.0   91    34.13   3171    1228   43963  11399     90.7    1.001
-06.0   93    34.87   3245    1286   47020  11697     91.9    0.970
-04.0   95    35.62   3320    1346   50295  11982     93.1    0.939  ! Near Maximum !
-02.0   97    36.36   3395    1407   53808  12253     94.1    0.910  ! Near Maximum !
+00.0   99    37.10   3470    1470   57579  12508     95.1    0.882  ! Near Maximum !
+02.0  101    37.84   3545    1535   61630  12747     96.0    0.854  !DANGEROUS LOAD-DO NOT USE!
+04.0  103    38.58   3620    1600   65986  12968     96.9    0.828  !DANGEROUS LOAD-DO NOT USE!
+06.0  105    39.33   3695    1668   70677  13168     97.6    0.803  !DANGEROUS LOAD-DO NOT USE!
+08.0  107    40.07   3770    1736   75735  13348     98.2    0.778  !DANGEROUS LOAD-DO NOT USE!
+10.0  109    40.81   3845    1806   81196  13505     98.8    0.754  !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    37.10   3660    1636   68762  12685     99.2    0.812  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     99    37.10   3229    1273   46773  11762     87.4    0.971

 

[Rem Jim]

QL show 39.5 grs as DANGEROUS ! :shock: its a very Common load some guys use as much as 41 grs ! HMM ! any comments :?: RJ

 

[SJB358]

Differing case capacities due to different chambers. Using the H20 space would probably show where the difference is.

 

[DrMike]

Differing case capacities due to different chambers. Using the H20 space would probably show where the difference is.

Spot on.

 

[CatskillCrawler]

Wasn't this powder named by Hodgdon because 38.0gr of powder worked so well for him in a 22-250 using a 55gr bullet?

 

[Rem Jim]

I have shot that load in at least 4 - 5 diff 22-250 rifles over the last 30 years and there has never being any pressure + signs in any of the rifles so I DOUBT that the pressure is any where near 70000 as QL suggests ! JMO RJ