20 Practical - Hornady 24gr NTX Load info

IAyoteHNTR

IAyoteHNTR

New member
Had a nice day at the range so I thought I'd share this load data/development.

Gun: Savage 10 actioned 20 Practical. 20" BHW P3 barrel, same profile as a Savage Precision Carbine .223 barrel. I tested 2 powders, H322 and H335. Loaded 5 rounds each of 4 different charges for both powders. LC brass trimmed to 1.755" - Horndy 24 grain NTX - COAL @ 2.230" to get this smaller bullet seated far enough down to get the bottom of the bullet right at the neck/shoulder junction. Pic of my test loads......

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H322 - chronograph speeds:

24.0gr - 3663/3734/3642/3673/3680 - VERY nice group of .350"
24.4gr - 3798/3714/3766/3809/3903 - (all over the place for some reason) ?
24.8gr - 3887/3853/3787/3777/3787 - nice low spread - not so good group
25.2gr - 3864/3904/3910/3897/3900 - nice low spread other than the one lower one - VERY nice group of .370"

Pic of the test target, the middle group is from testing my Savage Axis which was better than I expected with factory Fiocchi ammo, a .600" group. Not bad for a cheap gun with cheap ammo.
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H335 - chronograph speeds:

25.0gr - 3820/3853/3787/3777/3787
25.4gr - 3798/3875/3864/3864/3875
25.8gr - 3956/3842/3864/3820/3809 - wide spread
26.2gr - 4002(?)/3873/3898/3864/3921 best overall group @ .635", 4 in a group @ .335" with one flyer to make the group .635", maybe the one hot one was the flyer?

Didn't get a pic of the target on these loads....forgot to.
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Anyway, it was a good day at the range and I hope someone can use some of this info. Thanks for looking.
 
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Couple of nice groups there. Did you reach max with either of those loads? Some of those velocities are all over the place. Is that normal with your 20 practical?
 
Originally Posted By: desertcjCouple of nice groups there. Did you reach max with either of those loads? Some of those velocities are all over the place. Is that normal with your 20 practical?

No, I didn't reach max. Had no signs of pressure on the higher loads yet. Not sure why a couple of those loads had such a big difference in speeds and others didn't. Haven't seen that much of a difference in one particular load before so I have no answers for why. First time I've tried these bullets though.
 
Oh sweet !!

I just searched "24gr NTX load data" hoping to find some 20 Tac data I could use for my 20P.....and ended up here. LOL.

I should have checked here to start with.
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Thanks !!
 
Curious what primers you are using? I ask because I got wild variations with WC844, which is a surplus ball powder roughly equivalent to h335, using wolf primers. I just picked up some cci450s hoping that a hotter primer might make it more consistent.
 
May be like apples to oranges but my Tac 20 does best with
H4189 lit up with CCI450's with any of the lighter bullets.
H322 is a close second, but it does not do well with H335 at
all, mimicking the results here.
 
Originally Posted By: 204 ARCurious what primers you are using? I ask because I got wild variations with WC844, which is a surplus ball powder roughly equivalent to h335, using wolf primers. I just picked up some cci450s hoping that a hotter primer might make it more consistent.

Which Wolf primers were they?
 
Try:
Win SR Reloader 10x 26.0 @ 4,440 fps 2.25 Max Load AR Upper Barrel:23" T:1:10"


Originally Posted By: ShovelheadaveOh sweet !!

I just searched "24gr NTX load data" hoping to find some 20 Tac data I could use for my 20P.....and ended up here. LOL.

I should have checked here to start with.
smile.gif


Thanks !!
 
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