[dbush]

Dose anyone have a load for 223ai 1in 9 Win brass 4198 40gr bullet primer is Fed br,I know IMI is better brass but I cant find any. Thanks in advance

 

[keithcandler]

I would start at 23.0g and go up one shot for every .5g loaded...

using a thick primer cup like a 7 1/2 or cci450(br-4).

For instance, load one shot and one shot only looking for pressure signs......
23.0
23.5
24.0
24.5
25.0
25.5
26.
26.5
27.
etc until you determine what is a max load for your gun, accuracy will be within 2.0g of max.

You should get some screaming velocities out of 4198 with the 40's.

 

[Jim in Idaho]

In my .223AI, which is a 1:12 twist, the accuracy load with 40's is 24.4 grains of IMR4198. I use IMI brass, Rem. 7 1/2 primers, and that load is right at 3,900fps. Max is 4050, but i don't get the accuracy at that velocity.

 

[ReedG]

My .223AI likes 40-gr. Vmax with 27.8 of Benchmark.

 

[AVanGorder]

I spend Sunday working on my 223AI. I discovered that mine likes H335 with 50 grain bullets. However, it does NOT like H335 with 40 grain bullets. H322 seemed to work much better with the 40 grain Vmax.

 

[45TAJ]

Try Brassman for some IMI 223. He fixed me up last Dec (that sounds like a long time ago!)

 

[Dan Carey]

I shoot 30+ gr H335 with the 40 VMax and 28+ gr of Benchmark with the 50 VMax