Thread: Hodgdon 69 gr 223 manual error?

I have 25.2gr of 2206h behind a 69gr targex in mine. I went up to 25.5gr and had no pressure signs but the 25.2gr group was slightly better and I just wanted to play it safe. Is still leaving a 16inch barrel at 2800fps

Originally Posted by grandpamac

Greetings again @NathanSBR.
I had a closer look at the data and the pressure for each of the loads is close to 50,000 CUP (copper units of pressure) which is below max for the .223. The CUP measures have been out of date for 30 odd years now so it is old data. Some of the .223 data is held a bit below max presumably to give consistent port pressure in semi auto rifles. The 60 grain V-MAX gives a little more pressure than the SMK likely due to the longer bearing surface and deeper seating. From my loading and chronographing it appears that the lower charges in some data is due to the heavy compression needed to get the powder in. In an earlier post I wrote about data variations with the 60 grain V-MAX and BM8208 and there are some test loads in the blocks ready for chronographing so will report in due course.
A couple of years back I did some comparative testing with BM8208, AR2206 and AR2206H with the 125 grain projectile in the .308. In that application BM8208 and AR2206 were close to the same speed with AR2206H a bit slower. This makes me think that BM8208 might be a better powder for the .223 than AR2206H.
Regards Grandpamac.

Thanks for the input

Originally Posted by Southerner223

I have 25.2gr of 2206h behind a 69gr targex in mine. I went up to 25.5gr and had no pressure signs but the 25.2gr group was slightly better and I just wanted to play it safe. Is still leaving a 16inch barrel at 2800fps

Yeah nice. I have just recently ordered some Targex to try, as TMKs are like hen's teeth... Story of my life every time I find a good load....

Originally Posted by NathanSBR

Yeah nice. I have just recently ordered some Targex to try, as TMKs are like hen's teeth... Story of my life every time I find a good load....

My 18" Tikka the 80grn Targex shoot even better.

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My mate sent me this picture recently

Originally Posted by NathanSBR

My mate sent me this picture recently

Superdiver

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Originally Posted by 25/08 IMP

Superdiver

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I think you know one of my other best mates also haha

Think I'll try 25.2, 25.5 (which most people seem to be having success with) and 25.8 (what the rifle currently likes with the Sierra's) of 2206HakaH4895 behind the 69gr Targex this weekend and see how they go...