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RE: Reloading observation
ORIGINAL: rost495 Just noticed the post on not knowing MV. ACtually its true but only to a point. I use the Chrono to let me know if I'm in the range. Heck if I'm shooting a 300 wtby but getting 06 speeds I need to start over again with a new powder or new gun etc.... No need in burning up powder and barrels otherwise. Jeff |
RE: Reloading observation
Oehler has a setup M43 IIRC. Not cheap. One thing that is almost always a sure sign is brass flow. If you get an ejector mark(not the face of the bolt shaving the head on a snug case as it closes- but a true ejector mark) you definitely are at the top end pressure wise.
I had a friend with a slightly different pressure testing system do some work on loads that I shoot in matches that they thought were really too hot. In reality I was running about 65Kpsi and getting ejector marks here and there and when it was 105 F plus etc.... I know thats over what is called safe, but it was to everyones surprise but me, not nearly as high as they were thinking. There is or was a semi reasonable system that could only compare pressure spikes. If anyone wants info I can dig backwards when I have time. Thought being that factory ammo will always err on the light side and you can compare yours to theirs, though it won't give actual pressure readings. FWIW I suspect that anything thats 62-65KPSI and under in a modern checked out safe rifle, is more than likely never gonna bite ya. But that aside 55KPSI would be more certainly safe. Jeff |
RE: Reloading observation
ORIGINAL: rost495 FWIW I suspect that anything thats 62-65KPSI and under in a modern checked out safe rifle, is more than likely never gonna bite ya. But that aside 55KPSI would be more certainly safe. Jeff |
RE: Reloading observation
For me it depends on what the load is expected to do? Is it a varmint or big gameload? My personal limits on a big game load are the highest velocity I can get and keep the groups under 1.5" at 100 yds. For a varment load the best group gets the nod as all loads have sufficient energy for the job. That's how I do it.
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RE: Reloading observation
ORIGINAL: mossy33oak Went to the range yesterday with Bigcountry and had something interesting happen that hasnt happened before. I loaded up some new loads, Nosler 115 BT with 4350 and Win lrg rifle primers. I took all 5 recommended charges that the Nosler book recommends for 115 which was 45,46,47,48 and 49 gr. AND I took one load of 52 gr of 4831. This entire batch of ammo was to test a new seating depth. Well after I shot every group, heres the weird part......I had no bad groups, I mean some were .4 and some were .75 and some were 1". But usually when I test 6 different loads in one day I can narrow something down, but now I guess Im looking for some opinions.....Should I pick the overall tightest group period and load it some more, take the top 3 and load some more, or just say the hell with it and load the tightest group of the day that will give me the best velocity? Mossy I would stick with the best one! Did you log-in the loads? KEEP ON ROOTING!!! |
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