223ai

2897 Views 6 Replies 7 Participants Last post by Dan Carey, Jan 4, 2007

dbush

Discussion Starter · Dec 31, 2006

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

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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.

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Jim in Idaho

· #3 · Dec 31, 2006

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.

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ReedG

· #4 · Jan 1, 2007

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

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AVanGorder

· #5 · Jan 4, 2007

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.

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