N133 in a 223 Remington with a 52gr SMK

[450AK]

I just ran out of my old faithful H-322 but I scored 8 pounds of N133. I will be using 52gr SMK and 52gr Speer Varmint HP. Can you guys give me some of your favorite go to loads with these combinations? Thanks in advance!!

 

[urbanrifleman]

Just great stuff.

Should be about 24.5 grains.

 

[chkunz]

Look at the Sierra manual accuracy load for this bullet, 23.5 grains of N133. I did some bench rest testing with the Sierra 53 SMK with a 1:8 20 inch barrel and they shot very small groups. I wrote a report on the results. Send me an email at chkunz@bellsouth.net if you would like a copy of the report.

 

[450AK]

Look at the Sierra manual accuracy load for this bullet, 23.5 grains of N133. I did some bench rest testing with the Sierra 53 SMK with a 1:8 20 inch barrel and they shot very small groups. I wrote a report on the results. Send me an email at chkunz@bellsouth.net if you would like a copy of the report.

I just emailed you. Thank you!

 

[TheCZKid]

With Nosler 55 BT and N133 I had an accurate load at 23.3 grains, so in same area.

 

[chkunz]

I just emailed you. Thank you!

Report sent

 

[450AK]

Report sent

Thank you Sir!

 

[Calgary Bill]

I load 25.0 of N133 and 50 grain Hornady Vmax. Good accuracy and about 3500 fps with a 26" barrel.
This load comes from the current Nosler manual---it is the maximum load listed---I worked up slowly to the maximum and there was no sign of excess pressure.

 

[Dusty Stevens]

I load 25 and never needed to change that. I get 3500 or so with a 52hp in every 223 i have with a 14tw

 

[Mark M.]

Look at the Sierra manual accuracy load for this bullet, 23.5 grains of N133. I did some bench rest testing with the Sierra 53 SMK with a 1:8 20 inch barrel and they shot very small groups. I wrote a report on the results. Send me an email at chkunz@bellsouth.net if you would like a copy of the report.

Thank You!!

 

[lefty222]

Another power you might want to consider when you can't find what you want is Win. 748, l have been using it since to 70s it never let me down in my 222 22-250, and now working uploads for my Rem. 700 SPS rifle with 26 in barrel 1/12T, l was able to do this target last Friday only 3 shot groups for working uploads. test target below.
Wim. 748 24.6g power / Sierra 55g spitzer / CCI SRP / Brass FC 223.

Left 2 3 shot groups left side top & bottom Hornady 55g V Max 24.6g 748
The three groups to the right top & bottom Sierra 55g spitzer 24.6g 748
60 deg. mild crosswind L to R both groups clocking 3000 FPS
Eyes that are falling and 80 years young those groups made my day.

 

[Scrumbag]

Vihtavouri produce load data for 52gr Sierra HPBT and 53gr VMax

Rifle reloading data | Handloading | Rifle calibers | Centerfire Rifle bullets | Reload your own ammo - Vihtavuori

Vihtavuori offers rifle reloading data for numerous calibers and bullets for match and hunting purposes. Never exceed maximum loads.

www.vihtavuori.com

Scrummy

 

[whatsupdoc]

N133 was developed for the 5.56 NATO so it is a excellent powder for 223.

Not a 53gr but I shoot a Sierra 60gr TMK using 23.6gr of N133 @ 3175FPS

 

[Scrumbag]

N133 was developed for the 5.56 NATO so it is a excellent powder for 223.

Not a 53gr but I shoot a Sierra 60gr TMK using 23.6gr of N133 @ 3175FPS

How do you find the 60gr TMK?

Scrummy

 

[moorepower]

VV and Sierra both have free apps with all their load data on them.

 

[Rick300]

Has anyone tried it with 40 grain?