Quick load request 243 Win

[mjcmichigan]

22" barrel
95g Nosler BT
243 win
Remington case
CCI primer
H1000 powder
OAL 2.747

Thank you!


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[DrMike]

Cartridge          : .243 Win.
Bullet             : .243, 95, Nosler BalTip 24095
Useable Case Capaci: 49.260 grain H2O = 3.198 cm³
Cartridge O.A.L. L6: 2.747 inch = 69.77 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H1000

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   90    40.24   2336    1151   27995   9307     80.7    1.502
-18.0   92    41.25   2404    1219   30069   9708     82.7    1.460
-16.0   94    42.25   2473    1290   32315  10102     84.7    1.418
-14.0   96    43.26   2543    1364   34749  10485     86.6    1.377
-12.0   99    44.26   2614    1441   37379  10855     88.4    1.336
-10.0  101    45.27   2686    1522   40263  11209     90.1    1.289
-08.0  103    46.28   2759    1606   43388  11543     91.7    1.244
-06.0  105    47.28   2833    1693   46795  11857     93.2    1.200
-04.0  108    48.29   2908    1783   50517  12145     94.6    1.158
-02.0  110    49.29   2983    1876   54589  12406     95.8    1.117  ! Near Maximum !
+00.0  112    50.30   3058    1973   59060  12636     96.9    1.077  ! Near Maximum !
+02.0  114    51.31   3134    2071   63977  12833     97.8    1.038  !DANGEROUS LOAD-DO NOT USE!
+04.0  116    52.31   3210    2173   69399  12994     98.6    1.001  !DANGEROUS LOAD-DO NOT USE!
+06.0  119    53.32   3286    2278   75398  13116     99.2    0.964  !DANGEROUS LOAD-DO NOT USE!
+08.0  121    54.32   3362    2385   82054  13197     99.7    0.929  !DANGEROUS LOAD-DO NOT USE!
+10.0  123    55.33   3438    2494   89475  13234     99.9    0.895  !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    112    50.30   3243    2219   71991  12499    100.0    0.987  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    112    50.30   2813    1669   47867  11848     88.1    1.190

 

[mjcmichigan]

Thank you Dr Mike!


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[Guy Miner]

At roughly 3,000 fps, that bullet works GREAT from our 6mm Remington...

Guy

 

[mjcmichigan]

Thank you Guy! As some of you recall we've lost a couple deer with that gun. So I'm sold. Let's try the Nosler BT, and maybe the AccuBond. Pretty happy with QL. Talking myself in to buying that and also a new chrono. Maybe one that detects the magnetic wave go by.

Both Scott and Dr. Mike (and others too) have been very helpful.

This week I annealled and necksized some 3006. This is horrible, but I think I'm going to pick stuff inhave on my shelf to make room for new favorites. Sierra ProHunter and Superperformance powder. Always need plinking rounds and barrel fouling rounds


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[bboswell]

Seems odd, if I read the above correctly that 45.8g was near max when Hodgdon starts at 45g and goes all the way to 48g.

 

[mjcmichigan]

Your eyes played tricks on you. Starting load was 40.24g up to 50.30 max, then another 5 g to 55.3.
I saw a little sign of primer flattening at 50.3g. Stopped there.

My best group was about 1"
46.3g and 47.3g gave the same POI. The QL estimate V was 2759-2833. I think I need to try a different powder. I should receive some IMR4350 in two weeks, and I can buy some RL17 tomorrow. I've had this gun under 0.5" groups with Hornady SP.

Could use a known good recipe.


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[bboswell]

Your eyes played tricks on you. Starting load was 40.24g up to 50.30 max, then another 5 g to 55.3.
I saw a little sign of primer flattening at 50.3g. Stopped there.

My best group was about 1"
46.3g and 47.3g gave the same POI. The QL estimate V was 2759-2833. I think I need to try a different powder. I should receive some IMR4350 in two weeks, and I can buy some RL17 tomorrow. I've had this gun under 0.5" groups with Hornady SP.

Could use a known good recipe.


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Got Ya. I'm looking on iPad and all the rows of numbers don't line up correctly

 

[mjcmichigan]

If you cut and paste to windows, and change the font to courier, it lines up great! I think I'm sold on QL. Need to buy myself a laptop, then QL.


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[bboswell]

If you cut and paste to windows, and change the font to courier, it lines up great! I think I'm sold on QL. Need to buy myself a laptop, then QL.


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I'm with you! I have a new laptop so just need the QL

 

[MAinAR]

Could use a known good recipe.

I have 3 very temp stable I use in a 20" barrel that are rock solid temperature stable loads. Also muzzle blast needs to be a concern for barrels shorter than 24" so I use the faster burn rate in this class to reduce it some.

My 1st preference is H4350 at 39 grains or 2,850 fps (different lot #'s can cause need to be up or down half grain to reach speed. MY preferred hunting load due to lowest ES and rock solid velocities from HOT to COLD. 19 fps change from 85 to 20 degrees. Near indefinite shelf life.

Have tested IMR4451 up to 40 grains and see best accuracy at whatever it takes to hit 2,900fps. Don't load for hunting since testing due to 10 year shelf life on most of the new "green" powders and I load big batches for several year use when loading hunting loads, but shot great.

RL16 was very accurate as well at 40 grains and speed was 3000 fps. But again it is a "green" powder technology also.
http://www.alliantpowder.com/downloads/ ... _Loads.pdf

And day in day out IMR4350 is hard to beat as well and has nearly as good temp stability as H4350. At 40 grains IMR4350 gives me 2900fps and excellent accuracy and again near indefinite shelf life.

You mention RL17 and what I saw with it were more than acceptable velocity drops in single digit temps. More than enough to take you out of accuracy node if worked up in hot weather. Probably would not be as noticeable if load had been worked up in mid 50 temperatures to begin with? Not sure but moved on from it.

 

[6mm Remington]

IMR4350 and H4350 would both me good powders to try. You might play with the 95 or 100 gr. Partition and the 90 gr. AccuBond too! All great bullets.

 

[mjcmichigan]

Exactly. I have 200 BTs at 95g. My IMR4350 will arrive on May 23. Tried them over H1000. Grouped ok around 2700fps, and started opening up from there. I should be able to get the BTs close to 3000fps and 0.5 moa


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