Loads for new Mossberg .223 varmint rifle

[dawe11]

Looking for a good load using 50 grain bullets for this rifle. Want to run the loads thru the AR style clip. Lookin at Benchmark, 10x, h322, h4198 etc.

 

[K22]

With 50 grain bullets, I have had my best success loading the 223 (12" twists bolt rifles) using Varget, H4895, and H335.

Benchmark worked in some of my rifles but not all of them whereas the above mentioned powders worked very well in All my rifles (7 each).

I never could get H322 to work in my 223's. Never tried H4198 or 10x in my 223's.

Best results with Federal 205 match primers.

 

[5spd]

My go to load is the 50g vmax in front of 27.5g W748 since the late 70s. Course in the early stages it was a 50g JSP till the vmax hit the market. I know not one of the powders you listed.
In my AR15s my COL is 2.250" just short of max mag length.