New rifle

[mildot]

Well i went and bought a Sako 75 stainless synth .243AI from guntrader!

 

Loaded up numerous loads. different powder weight and different lengths to try! all with 87gr Vmax's

 

I had forgot to load some fouling shot bullets so just decided to pic 43gr of imr4350 powder and seated thenm to 2.655". made 10 up just so i could get onto target and semi zero'd without wasting my test loads. this was at 4.45am on the morning! it so happened that these were the middle of the row of test ammo too.

 

Once i got onto target and semi zero'd i thought i would see how well they performed at 100yrds. bearing in mind i was fireforming cases as i went! Well the first proper group was nye on hole on hole! 1/4" i thought i had missed badly! but i had noticed that the hole had got slightly larger! Well we went onto 200yards and the same again 1/4"-1/2" i was so amased that my first load which also happened to be my fouling shot load was so accurate! This is a standard sako 75 .243 S/S. all that has been done was the previous owner wanted it as an AI so had the barrel re-chambered! he sold it because it wasnt as accurate as he had wanted! i can only guess that he didnt try the load that i did! Also the other loads were still well under 1" @100yrds! and thats 1gr either side and seated at 60odd thou longer!

 

I also got to shoot my .223 RPA properly too. i had taken it out foxing but i could give it a real good test at bisley! Well to say that i shot a .201" (.425 outside to outside) @ 200yrds is phenominal.

 

Can you guess i was extremely happy and went home with a very large hardon! lol

[mildot]

If anyone has quickload would you mind entering load data to see what velocity they say the load is doing please. Just so i have a rough idea.

 

lapua case

Ackley Impr

 

43gr IMR4350

87gr V-max

 

seated at 2.655"

 

21.5" barrel

 

 

 

many thanks

[6mmBR]

Here you go

 

Cartridge : .243 Ackley Imp

Bullet : .243, 87, Hornady V-MAX 22440

Cartridge O.A.L. L6: 2.655 inch or 67.44 mm

Barrel Length : 21.5 inch or 546.1 mm

Powder : IMR 4350

 

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 75 34.40 2446 1156 26721 9685 85.0 1.442

-18.0 77 35.26 2506 1213 28388 10033 86.4 1.407

-16.0 78 36.12 2566 1272 30155 10375 87.8 1.374

-14.0 80 36.98 2627 1333 32029 10711 89.1 1.341

-12.0 82 37.84 2687 1395 34017 11041 90.3 1.309

-10.0 84 38.70 2748 1459 36126 11362 91.5 1.278

-08.0 86 39.56 2809 1524 38364 11673 92.6 1.242

-06.0 88 40.42 2870 1591 40741 11974 93.6 1.207

-04.0 90 41.28 2931 1660 43262 12262 94.6 1.174

-02.0 92 42.14 2992 1729 45915 12538 95.5 1.141

+00.0 93 43.00 3053 1800 48709 12800 96.3 1.110 ! Near Maximum !

+02.0 95 43.86 3113 1873 51666 13047 97.1 1.080 ! Near Maximum !

+04.0 97 44.72 3174 1946 54799 13278 97.7 1.051 !DANGEROUS LOAD-DO NOT USE!

+06.0 99 45.58 3234 2021 58119 13492 98.3 1.022 !DANGEROUS LOAD-DO NOT USE!

+08.0 101 46.44 3294 2097 61640 13688 98.8 0.995 !DANGEROUS LOAD-DO NOT USE!

+10.0 103 47.30 3354 2173 65374 13865 99.2 0.969 !DANGEROUS LOAD-DO NOT USE!

Cheers

Dave

[mildot]

Just what i had prewdicted. i thought it must be around the 3000-3100 mark.

 

heers much appreciated

[varminter]

Nice to hear you are soooo pleased with the rifles!! ;)

243 Ackley -- hmmm brings back memories - bunnies like flying squirrels when you hit them!!!! :lol:

Glad to hear its going well.............

All the best...................

RAY..........................................