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Odd results with Titegroup.
- Thread starter dahermit
- Start date
Other than a casing that has split upon firing, then I would have no explanation for any bang significantly louder than the others. However, it is a moot question inasmuch as I do not own a chronograph and at my advanced age, I can see no reason to buy one at this point.You seem to only be looking at the chrono telling you the BANG is faster then the rest . What if that BANG showed no difference in velocity from the others ? What would be your obvious observation be then ?
I am all ears. Just what could be causing a louder report?This is not meant to be snarky . There is another possible outcome then the louder bang is faster .
As Judge Judy says: "Could'a, should'a, would'a". If I had one, I would chrono my shot strings...but I don't. Perhaps one of my Amish neighbors has one, you think? The "problem" is, that unusually louder sounding rounds that should be virtually identical, make me nervous, just as a way too mild sound of a shot would me suspect something is not right.It's why you chrono the loads , it is possible you don't see a velocity change . If so then what ? Maybe just maybe a chrono will tell you there is no problem .
If I had a too mild (squib), sounding shot in the string, I would suspect an issue with powder position...however, I do not see how powder position sensitivity could cause a relatively rare, seemingly heavy load when all most all the rounds produce a normal report and recoil. Years ago, before most posters were born, there was much debate (in gun rags...internet was not born yet.), concerning 2.7 Bullseye under a 148 hollow base wadcutter...a very common and a de facto standard for off-hand target shooters. There seemed to be a rash of target guns blowing-up. It was opined by many that what was happening was something they were calling, "detonation", wherein it was supposed that the powder laying on the bottom of the case horizontally, or up against the bullet, the flame of the primer would "skip across" the top of the powder causing it to catch fire and burn all at once (detonate), instead of burning progressively and producing a normal pressure curve. However, ballistic labs could never reproduce such a "detonation", no matter how they hard tried. Therefore, the causes of the catastrophic events were attributed to double-loads, squib followed by full load, etc. In my particular case, the report and recoil is loud enough to get my attention, but is not blowing up my gun of course...even if "detonation" were an actual event. So, I cannot see how powder position can be a factor in my instance. But, if someone has data that suggests powder position can cause a spike as I have described, I would be glad to see it.Contrary to Hodgdon advertising, Titegroup is QUITE position sensitive.
I think your powder is sloshing around in the large case volume under a light bullet. Even though fired in six shot rapid strings, every shot bounces the small powder charge around an where it comes down is largely random.
Biff bang boom pop.
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I am all ears. Just what could be causing a louder report?
I honestly don't know . I feel that's why I would chrono them . To be sure the loud report was in fact higher pressure . I think I'd be more concerned if I found the loud report did not produce higher velocities because I'd really be stumped then .
Did you by any chance find a pattern-ish in when the louder report would happen . Or even an average round count they would come up . I think with out a chrono I'd find the avg round count they come up and pull 10 more past that count and measure all the loads and see if there is a difference . I'm assuming if there is a charge issue it would be more then a couple tenths ???
Do you have a guestamate as to what charge it would need to be to give you that louder report ? How much over do you think they might be ?
Me too.I honestly don't know . I feel that's why I would chrono them . To be sure the loud report was in fact higher pressure . I think I'd be more concerned if I found the loud report did not produce higher velocities because I'd really be stumped then .
No detectable pattern.Did you by any chance find a pattern-ish in when the louder report would happen . Or even an average round count they would come up . I think with out a chrono I'd find the avg round count they come up and pull 10 more past that count and measure all the loads and see if there is a difference .
No. If I had to guess, I would say the difference between the lightest 2.7 Bullseye load and a +P load. Inasmuch as my .38 Special brass has been loaded maybe 100 times each, I am used to an occasional split case upon firing. I notice those (louder report, normal recoil), everytime it happens. The phenomenon I have posted about, is above and beyond that.Do you have a guesstimate as to what charge it would need to be to give you that louder report ? How much over do you think they might be ?