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22.8 gr H335 with SMK 77 -- Safety Concerns?
- Thread starter RSnipe
- Start date
Did you just load that and that was it? Like did you consult a reloading manual, did you start lower and work your way up to that load?
How did you get to that load? Has YOUR rifle shown pressure signs?
How did you get to that load? Has YOUR rifle shown pressure signs?
I worked my way up and didn't see any pressure signs in my rifle on the day I shot the rounds. I got to around 2550 fps which (in my rifle) mimicked some WC 77gr rounds I had (half the SD in my rounds 
).
But then I saw stumbled on some over pressure comments with H335. I'm looking for others experience with H335 and 77gr SMK.
).But then I saw stumbled on some over pressure comments with H335. I'm looking for others experience with H335 and 77gr SMK.
Hogdon lists 22.6 with that bullet.
I’d suspect the data was worked up in .223 throat vs. Wylde.
That said, the H data was with Winchester cases and primers. LC brass and 450’s could drive up pressure.
H335 is pretty temp sensitive, so if you worked it up at 40deg. It may get nast at 95.
25.3 H335 w/55 hdy sp, r-p cases and 400’s is my “plinker” load. Shoots very well in my AR.
I’d suspect the data was worked up in .223 throat vs. Wylde.
That said, the H data was with Winchester cases and primers. LC brass and 450’s could drive up pressure.
H335 is pretty temp sensitive, so if you worked it up at 40deg. It may get nast at 95.
25.3 H335 w/55 hdy sp, r-p cases and 400’s is my “plinker” load. Shoots very well in my AR.
If I recall, H335 can be temp sensitive.....maybe that was the basis of the info you found.
Hogdon info shows 22.6gr as a max charge for what it's worth.
Hogdon info shows 22.6gr as a max charge for what it's worth.
The Lyman manual shows max 25.0 (starting was 22.5) for 77gr Jacketed HPBT and Nosler shows 23 for 2 non-Sierra 77gr. I didn't see any Hodgdon data for 77gr. Saw one test of 77 bergers with 23.5gr with no pressure signs. So I didn't think I was pushing the envelope.
Anybody actually use 77gr with H335 in these ranges?
Anybody actually use 77gr with H335 in these ranges?
Hard for me to see a difference. Primers look ok overall to me, I don't see any heavy flattening or cratering.
If I had to guess I might be seeing a little cratering in a few cases on the right, but that could be the lighting.
the newer reloading manuals are showing safe loading data for both chamberings now. Many reloaders are not paying attention to the difference thinking both are interchangeable.
If you don’t see any pressure signs on your brass in your rifle, who the hell cares what other people are saying about that load in rifles that arent yours?I worked my way up and didn't see any pressure signs in my rifle on the day I shot the rounds. I got to around 2550 fps which (in my rifle) mimicked some WC 77gr rounds I had (half the SD in my rounds
But then I saw stumbled on some over pressure comments with H335. I'm looking for others experience with H335 and 77gr SMK.
If its been proving safe in your gun and it performs to your satisfaction, dont fix what isn’t broken.
I care -- perhaps others have fired those rounds under more varied conditions and loads than I have and would have insight into the question. I care what others are saying/doing because my experience isn't the sum total of all knowledge out there.
Unless your hand loaded rounds are going to be fired in their weapons, it doesn’t matter.
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