243 winchester loads needed ??

[jr1968]

Hi guy's
I'am a nosler fan , I was wondering if any of you have loaded and shot
any of Swift's 90 gr. scirocco's. If so I was wondering what load data should I use?
Now on to my next question , which bt tips work better for light loads
the 55's or 70's?
Thanks Guy's

jr1968

 

[JD338]

jr1968

Back in my 243 Win days, I used to load the 70 gr BT with 39.0 grs IMR4895. This load was very accurate in several different rifles.
IMR 4350 was a good powder for 95 gr and 100 gr bullets.

JD338

 

[Jazzball]

I shoot more paper than game, but I have been very satisfied with the 70gr NBT and IMR4064. The groups have been satisfactory, and the crows haven't complained either.
Jazzball

 

[flyfish]

I'm currently working on some loads form my .243. I am using Nosler 70 grain BT. I have used IMR4895 and found one that shoots pretty well. I have loaded some with IMR 4350 but have not been to the range yet with these. We'll see which powder gives me the best group. I'm guessing either powder would ruin a coyotes day!

When I finish with my shooting I'll let you know what my results were. FYI, I shooting a Remington Model 788 (.243 Win)

 

[FOTIS]

Cartridge : .243 Win.
Bullet : .243, 90, Swift Scirocco
Cartridge O.A.L. L6: 2.710 inch or 68.83 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : Alliant Reloder-22

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 85 38.40 2489 1238 30041 9858 85.1 1.431
-18.0 87 39.36 2556 1305 32178 10219 86.8 1.393
-16.0 89 40.32 2623 1375 34478 10571 88.4 1.356
-14.0 91 41.28 2691 1447 36955 10913 89.9 1.320
-12.0 93 42.24 2759 1522 39625 11241 91.3 1.284
-10.0 95 43.20 2828 1598 42503 11555 92.7 1.244
-08.0 97 44.16 2897 1677 45613 11853 93.9 1.204
-06.0 99 45.12 2966 1758 48972 12131 95.1 1.165
-04.0 102 46.08 3035 1841 52606 12390 96.1 1.127
-02.0 104 47.04 3105 1926 56541 12627 97.0 1.091 ! Near Maximum !
+00.0 106 48.00 3174 2013 60810 12840 97.8 1.056 ! Near Maximum !
+02.0 108 48.96 3243 2102 65424 13027 98.5 1.022 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 49.92 3312 2192 70394 13188 99.1 0.989 !DANGEROUS LOAD-DO NOT USE!
+06.0 112 50.88 3381 2284 75778 13319 99.5 0.958 !DANGEROUS LOAD-DO NOT USE!
+08.0 114 51.84 3449 2378 81622 13421 99.8 0.927 !DANGEROUS LOAD-DO NOT USE!
+10.0 116 52.80 3518 2473 87977 13490 100.0 0.898 !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 106 48.00 3343 2233 74216 12640 100.0 0.970 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 48.00 2948 1737 48549 12272 90.7 1.166


As for the lighter bullets I like the 70 gr better for long range coyotes.


Cartridge : .243 Win.
Bullet : .243, 70, Nosler BalTip 39532
Cartridge O.A.L. L6: 2.710 inch or 68.83 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : Hodgdon H4895

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 77 35.20 2839 1253 34345 9133 96.5 1.233
-18.0 79 36.08 2901 1308 36628 9349 97.3 1.205
-16.0 81 36.96 2963 1365 39033 9550 98.1 1.170
-14.0 83 37.84 3025 1422 41557 9735 98.7 1.137
-12.0 85 38.72 3085 1480 44227 9903 99.2 1.105
-10.0 87 39.60 3146 1538 47052 10053 99.6 1.075
-08.0 89 40.48 3205 1596 50043 10184 99.8 1.046
-06.0 91 41.36 3263 1655 53207 10296 100.0 1.017
-04.0 92 42.24 3321 1714 56557 10388 100.0 0.990 ! Near Maximum !
-02.0 94 43.12 3378 1773 60102 10474 100.0 0.964 ! Near Maximum !
+00.0 96 44.00 3434 1832 63857 10558 100.0 0.939 !DANGEROUS LOAD-DO NOT USE!
+02.0 98 44.88 3489 1892 67834 10639 100.0 0.915 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 45.76 3543 1951 72048 10717 100.0 0.892 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 46.64 3597 2011 76516 10792 100.0 0.869 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 47.52 3650 2071 81256 10865 100.0 0.848 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 48.40 3703 2131 86287 10935 100.0 0.827 !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 96 44.00 3537 1944 74413 10255 100.0 0.880 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 44.00 3279 1671 53219 10832 98.9 1.018