Totally weird.
- Thread starter Kachok
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Kachok
Member
Yeah and if 748 shot as good at 44 or 45gr it would be a none issue, I am not trying to beak any speed records, just want to work up an accurate reasonably quick (2550-2650fps) 180gr load, I got a decent .968" group using 44.5gr of BL-C(2) with a 180g SGK but it was hitting pretty low and now I am scared to use any Hodgdon data since it is supposed to be WAY excessive with W748, my other manuals don't even list that powder for 180gr.
Do you think that Hodgdon load way a typo or do you think that was really safe in their test rifle?
Do you think that Hodgdon load way a typo or do you think that was really safe in their test rifle?
Nevmavrick
Member
I notice that all the bullets you've used are BTs. Maybe you can try a FB?
You might try to put a bullet back into the case before you resize it. I found I had a slightly short chamber once, and it raised my pressures just enough that the powder-burning got erratic.
I know that WW748 is a very popular powder with the .308,, but you might try WW760 (H414).
Primers MAY not show flattening at 70K. Part of the signs we try to "read" when shooting are common, one way or the other, and are therefor indicative of nothing. I've had several rifles that showed flattening at lower pressures. I've also had a couple that almost won't flatten until some of of the group actually blow by!
One of my rifles craters everything...you ignore it. It just is.
Have fun,
Gene
You might try to put a bullet back into the case before you resize it. I found I had a slightly short chamber once, and it raised my pressures just enough that the powder-burning got erratic.
I know that WW748 is a very popular powder with the .308,, but you might try WW760 (H414).
Primers MAY not show flattening at 70K. Part of the signs we try to "read" when shooting are common, one way or the other, and are therefor indicative of nothing. I've had several rifles that showed flattening at lower pressures. I've also had a couple that almost won't flatten until some of of the group actually blow by!
One of my rifles craters everything...you ignore it. It just is.
Have fun,
Gene
Kachok
Member
Yeah a couple of my rifles are hard to read, I have never seen extractor marks on the Winchester even when I had obvious signs of overpressure on the primers, and one of my rifles flattens ever primer every time on any load, I don't worry about it until they start to flow outward and then back them down a full grain. Had one rifle that left a crater on any ol factory load, I think that had something to do with the firing pin. Pressure signs are a funny thing to read, they never appear to be the same rifle to rifle, but every single time I have had outward primer flow I knew to back it off. Have not ruptured a case yet much less a rifle, and I hope to keep it that way.
MtnCreek
Member
Probably had a larger firing pin hole or a smaller pin. Newer Remington rifles are this way by design and even a modest load will crater.
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