Speed?

wisconsinteacher · Sep 7, 2015

What should I expect to see for speeds with a 22-250 shooting 55 vmax bullets and IMR4064 with 22" barrel?

Also, a 25-06 with 110 Accubonds and RL19 from a 22" barrel?

Thanks

SJB358 · Sep 7, 2015

3700 for the 55's and 3100 or so for the 110's would be might guess right off the top of my head.

Wyo7200 · Sep 7, 2015

Good off the top of the head numbers.

Code:

Cartridge          : .22-250 Rem. (SAAMI)
Bullet             : .224, 55, Nosler Varmag HP 17235
Useable Case Capaci: 42.333 grain H2O = 2.749 cm³
Cartridge O.A.L. L6: 2.355 inch = 59.82 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : IMR 4064

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   90    33.30   3276    1311   44487  10361     94.7    1.038
-09.0   91    33.67   3311    1339   45896  10478     95.1    1.023
-08.0   92    34.04   3345    1367   47348  10593     95.6    1.008
-07.0   93    34.41   3380    1395   48844  10704     96.0    0.994
-06.0   94    34.78   3415    1424   50387  10811     96.4    0.979
-05.0   95    35.15   3449    1453   51977  10916     96.8    0.965
-04.0   96    35.52   3484    1482   53615  11016     97.2    0.952
-03.0   97    35.89   3518    1511   55305  11113     97.5    0.938  ! Near Maximum !
-02.0   98    36.26   3552    1541   57047  11206     97.8    0.925  ! Near Maximum !
-01.0   99    36.63   3586    1571   58843  11295     98.1    0.912  ! Near Maximum !
+00.0  100    37.00   3620    1601   60696  11380     98.4    0.900  ! Near Maximum !
+01.0  101    37.37   3654    1631   62607  11461     98.7    0.887  ! Near Maximum !
+02.0  102    37.74   3688    1661   64578  11538     98.9    0.875  !DANGEROUS LOAD-DO NOT USE!
+03.0  103    38.11   3722    1692   66612  11610     99.1    0.863  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    38.48   3756    1723   68711  11678     99.3    0.851  !DANGEROUS LOAD-DO NOT USE!
+05.0  105    38.85   3789    1753   70877  11742     99.5    0.840  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    100    37.00   3703    1675   65832  11347     99.7    0.867  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    100    37.00   3524    1517   55593  11285     96.2    0.937  ! Near Maximum !

Code:

Cartridge          : .25-06 Rem.
Bullet             : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 61.089 grain H2O = 3.966 cm³
Cartridge O.A.L. L6: 3.200 inch = 81.28 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-19

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   88    49.50   2796    1909   43586  12625     94.4    1.245
-09.0   89    50.05   2827    1952   45001  12782     94.9    1.226
-08.0   90    50.60   2858    1995   46454  12935     95.3    1.208
-07.0   91    51.15   2889    2039   47946  13084     95.8    1.191
-06.0   92    51.70   2920    2083   49483  13230     96.2    1.173
-05.0   93    52.25   2952    2128   51068  13371     96.6    1.156
-04.0   94    52.80   2983    2173   52702  13507     97.0    1.139
-03.0   95    53.35   3014    2218   54388  13639     97.4    1.122
-02.0   96    53.90   3045    2264   56128  13766     97.8    1.106  ! Near Maximum !
-01.0   97    54.45   3076    2311   57922  13887     98.1    1.090  ! Near Maximum !
+00.0   98    55.00   3107    2357   59774  14004     98.4    1.074  ! Near Maximum !
+01.0   99    55.55   3137    2404   61685  14116     98.6    1.058  ! Near Maximum !
+02.0  100    56.10   3168    2452   63657  14222     98.9    1.043  ! Near Maximum !
+03.0  101    56.65   3199    2500   65694  14323     99.1    1.028  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    57.20   3230    2548   67796  14417     99.3    1.014  !DANGEROUS LOAD-DO NOT USE!
+05.0  103    57.75   3260    2596   69967  14506     99.5    0.999  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     98    55.00   3184    2477   65274  13977     99.7    1.032  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     98    55.00   3017    2223   54326  13852     96.0    1.121

wisconsinteacher · Sep 7, 2015

Those were the numbers I was hoping for but got 2944/2950/3064 from the 25-06 and 3643/3637/3611 from the 22=250. I got a nice group with the 25-06 but need to work on the seating depth of the 22-250.

SJB358 · Sep 8, 2015

I doubt antelope or deer will notice the difference WT. If it shoots well I'd let it be.

Wincheringen · Sep 8, 2015

Accuracy > Velocity.

Vince · Sep 8, 2015

I don't do my chronograph work until I find a load I like.
Accuracy trumps velocity.

Vince

Sent from my SGH-M919 using Tapatalk

SJB358 · Sep 9, 2015

Vince":fcixecio said:
I don't do my chronograph work until I find a load I like.
Accuracy trumps velocity.

Vince

Sent from my SGH-M919 using Tapatalk

I actually work backwards a little. I'll chronograph up front since I refuse to run a 7mm magnum like a 7-08 (unless it's some sorta youth load). Usually I find the area I'm happy with speed wise and tune it up via seating depth tweaks. Since I'm a hunter I want both accuracy and velocity.

Elkman · Sep 9, 2015

I don't own a chrony, accuracy is number one. For most "hunting" distances speed is not a factor. They are not able to tell the difference between 3000 fps and 2930 fps, when hit well.

Dwh7271 · Sep 9, 2015

Agree with Bill although I also agree with Scotty. You don't buy a Ferrari and drive it like a Smart Car. :grin:
I want as much speed as I can get while maintaining hunting accuracy. I DO agree the critters can't tell the difference but in my mind I can. My mindset and confidence in my setup is as key as other choices.
Mindset is key. Kind of like fishing, if I'm reasonable I really only "need" 8 or ten different flies even though I have boxes of them. :grin: Fishing lures and gadgets catch more fishermen than fish. :lol: