MagnumManiac
Well-Known Member
I no longer reply to these type of threads, but I will say, I have deliberately jammed bullets by .030" and never seen a rise in pressure enough to have what you describe…..not once.
Reseating bullets
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but you do load develope for that though?
MagnumManiac
Well-Known Member
Nope.
Just did it to see if the BS about jamming a normal load from .010" off to .030" jammed did what was claimed. It did raise pressure, but not enough to be concerned with.
I have been jamming target bullets for 30 years, not once did I see a powder charge that needed significant reduction due to being jammed against a load touching or one .010" off.
Cheers.
Just saying you haven't experienced that particular situation doesn't give me any clue as to why it happened. I know there was no obstruction because the first thing I always do before I load the rifle for a new session is drop the bolt out and check chamber and muzzle. The literature from people that have a lot of experience in loading suggest that what happened is not that uncommon. I will NEVER do that again.
My point was something else is at play here. The seating depth isn't enough to cause this issue.
The same as @MagnumManiac, I've gone from jump to jam on already hot loads and it doesn't make a big enough difference to cause a real issue.
I think jam to jump creates different issues than jump to jam because of the change in case capacity. I consider it a very valuable lesson. I appreciate your post.
MagnumManiac
Well-Known Member
If you had oil/solvent left in the chamber after cleaning, what you describe mirrors the results of what you saw.
It is NOT high pressure, but mimics that because the case slams the bolt tight into the lug recess.
Cheers.
It is NOT high pressure, but mimics that because the case slams the bolt tight into the lug recess.
Cheers.
MagnumManiac
Well-Known Member
There is no way seating deeper .030" is going to increase pressure the way you describe, unless a massive overload was already present…
Just doesn't happen.
If I had more sensors, I would rig up my Pressure Trace, load several cases from .030" jammed to .030" off, then .070" off then .100" off and show you the difference in pressure.
If, as you say, you were originally .002" off, then moved away another .030", there is no chance that caused your issue. None.
Ever had a case partially blocked with cleaning media and charged it and fired it?
Would pressure go up or down?
Cheers.
I've gone both ways. I recently did a seating depth test that had .180" difference total and there was no noticeable change in pressure or velocity. You had other issues. That was also a stout load.
Nosler has loading data for 6.5-06 in their book. I am 1g over their max load for 120g so I am at the top end for sure since my bullet is 123g. I will be guessing at what happened for some time. It was a good lesson for me indicating I need to be very careful when I am crowding the top charges. Thanks for your info.
