looking for a rough powder charge to get a 165gr 9mm going roughly 780-800fps using VV n310. Loaded to 1.14oal with fed match small pistol primer. Im thinking 2.5-2.6 grains should do the trick but I am concerned with being over pressured.
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Where are you getting 165 grain 9mm bullets?
The heaviest I have seen are 158 grain cast. http://www.castpics.net/project2/CastDatalist.php?start=111
You would be wise to be concerned with excessive pressures in these heavy bullets. Too little powder can create a grenade.
Yeah I'm getting them from xtreme. I've loaded and shot roughly 5k of them for IDPA matches. My usual loads are either 2.7 of titegroup or 3.0 of vv n320 @1.14 oal. Very very soft shooting. They do make some pressure judging by the primer but it's nothing unsafe as long as I do my part checking brass before loading.
The nice thing is 9mm has a bunch of metal surrounding it. Even if it exceeds the "limit" if one doesn't go crazy they will be fine. No proof loads for this heavy loading though.