I don’t know the twist rate in my FN Deluxe 270. I tried a few powders, the 4350’s gave me good velocities, I think Varget has more potential than the one test I tried, I used to use IMR 4064 with 130’s and it worked great. My rifle did not shoot as well with 130’s as it did with 150’s, which I think is a bummer as the 130 should be the best overall bullet in the 270.
I would recommend a short cut 4350, I think the latest AA4350 is short cut. The 4350 series of powders are an outstanding powder for many bolt gun cartridges, I think you could load 99% of all rifle cartridges with IMR 4895 and IMR 4350. I use IMR 4350 in the 6.5 Swede, 7.5 Swiss, 270, 30-06, 300 H&H Magnum, it works well.
Code:
[SIZE="3"][B]FN Deluxe 24" Barrel [/B]
100 gr PSP Remington Factory
29 Dec 2011 T = 50 °F
Ave Vel = 3024
Std Dev = 11
ES = 27
High = 3035
Low = 3008
N = 5
130 gr Winchester Power Point SP Factory
29 Dec 2011 T = 51 °F
Ave Vel = 2789
Std Dev = 17
ES = 42
High = 2809
Low = 2767
N = 5
130 gr Federal Hi Shok Factory
29 Dec 2011 T = 51 °F
Ave Vel = 3028
Std Dev = 38
ES = 103
High = 3088
Low = 2985
N = 5
130 gr R-P Bronze Point 55.0 grains H4350 wtd lot 22655 R-P cases WLR OAL 3.250"
8 Feb 2012 T = 50 °F
Ave Vel = 2757
Std Dev = 20
ES = 38
High = 2772
Low = 2734
N = 3
130 gr Nosler BT 55.0 grains H4350 wtd lot 22655 R-P cases WLR OAL 3.3"
29 Dec 2011 T = 50 °F
Ave Vel = 2833
Std Dev = 15
ES = 39
High = 2848
Low = 2809
N = 5
130 gr Federal Fusion (pulled) 55.0 grs IMR4350 wtd lot RBS (60's) mixed cases Fed 210S OAL 3.225"
8 Feb 2012 T = 50 °F
Ave Vel = 2942
Std Dev = 5
ES = 10
High = 2948
Low = 2938
N = 5
130 gr Nosler 55.0 grs AA 4350 wtd lot 9-95 Rem cases WLR OAL 3.250"
8 Feb 2012 T = 50 °F
Ave Vel = 2961
Std Dev = 6
ES = 16
High = 2967
Low = 2951
N = 5
130 gr Federal Fusion (pulled) 49.0 grs IMR 4064 wtd lot 2449R Win cases Fed210S OAL 3.225"
8 Feb 2012 T = 50 °F
Ave Vel = 2859
Std Dev = 16
ES = 34
High = 2878
Low = 2844
N = 5
130 gr Federal Fusion (pulled) 46.0 grs Varget wtd lot 4295 Rem cases WLR (brass) OAL 3.225"
8 Feb 2012 T = 50 °F
Ave Vel = 2765
Std Dev = 23
ES = 58
High = 2783
Low = 2725
N = 5
150 gr Speer Flat Base 53.0 grains H4350 wtd lot 22655 R-P cases WLR OAL 3.250"
29 Dec 2011 T = 51 °F
Ave Vel = 2704
Std Dev = 18
ES = 49
High = 2727
Low = 2678
N = 5 [/SIZE]
Do you crimp the finished round
As for crimping I do not recommend crimping. Crimping will shift the lead core inside the bullet and deform the jacket. Swaging the lead core just creates inaccuracy. A center of gravity in line with the axis of rotation is critical to accurate shooting. If the jacket thickness varies, if the core is uneven, if the CG of the round is not where is should be, because you swaged the bullet with a crimp die, the bullet could go anywhere.
You really only need to crimp for lever actions and elephant guns. If you have a 20mm multiple barreled chain gun, crimping is recommended. Other than that, don’t crimp rifle bullets.
