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lah2420 · February 16, 2013, 09:58 PM

I have a question I hope someone with a lot more experience than I have can answer. I pulled the Hodgdon data off of their site for H355 and H322 for the .223.
Then today I received the Hornady 9th edition manual.

I'm wondering which manual to go with. Below are their listings.

Speer SP 55 gr--- 23 gr start - 25.3 gr max H355 in Hodgdon manual
Hornady SP 55 gr--20.8 gr start - 23.2 gr max H355 in Hornady manual

Speer SP 55 gr--21 gr start - 23 gr max H322 in Hodgdon manual
Hornady SP 55 gr--19.5 gr start - 23.1 gr max H322 in Hornady manual

The H322 max loads are similar in both manuals for the 2 bullets, but the H355 is totally different.
I have the Hornady 55 gr SP bullet and Hodgdon did not show data for that particular bullet so I went with the closest similar one as instructed.

Hope that wasn't too confusing.

February 16, 2013, 09:58 PM	#1
lah2420 Member Join Date: August 2, 2009 Location: Arkansas Posts: 54	Hornady 55 gr SP and H355/H322 question I have a question I hope someone with a lot more experience than I have can answer. I pulled the Hodgdon data off of their site for H355 and H322 for the .223. Then today I received the Hornady 9th edition manual. I'm wondering which manual to go with. Below are their listings. Speer SP 55 gr--- 23 gr start - 25.3 gr max H355 in Hodgdon manual Hornady SP 55 gr--20.8 gr start - 23.2 gr max H355 in Hornady manual Speer SP 55 gr--21 gr start - 23 gr max H322 in Hodgdon manual Hornady SP 55 gr--19.5 gr start - 23.1 gr max H322 in Hornady manual The H322 max loads are similar in both manuals for the 2 bullets, but the H355 is totally different. I have the Hornady 55 gr SP bullet and Hodgdon did not show data for that particular bullet so I went with the closest similar one as instructed. Hope that wasn't too confusing.