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Joined: Jan 2002
Posts: 11,380 Likes: 105
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 11,380 Likes: 105 |
To ask the question another way, does peak pressure actually occur in the chamber or is it farther down the bbl like in the forcing cone area?
On every pressure curve I've seen--those in which pressure is measured over distance rather than over time--it happens in the chamber, right around the 1" mark.
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Joined: Dec 2001
Posts: 12,743
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 12,743 |
I have not seen anything positive to show that it has changed, but Burrard stated the reason for placing the gauge at 1 inch from the breech was to ensure the maximum pressure would always be caught. Thus even using the fast powders of the day the max would not be reached closer than 1 inch, but it would occur very shortly thereafter. Even using the most progressive burning powders suitable for shotgun use has not given a very large shift of the point where the peak is reached.
Miller/TN I Didn't Say Everything I Said, Yogi Berra
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Joined: Feb 2012
Posts: 601 Likes: 39
Sidelock
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Sidelock
Joined: Feb 2012
Posts: 601 Likes: 39 |
Larry,
Thanks, that is the info I wanted & I also got similar data from a graph Drew Hause posted.
BTW I was Tim Wolf's loader for the flurry @ the Great Northern Shoot. Tim owes all his success in his flurry score to my loading abilities. He even had the nerve to take a $ side bet from me on the flurry but I don't think he gave his best when loading for me.
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Joined: Jan 2002
Posts: 11,380 Likes: 105
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 11,380 Likes: 105 |
Brittany Man, I think Tim probably shot the best score of the shoot, compared to others just using one gun and one loader. Obviously, you did a fine job loading. You'd be more than welcome to come to Scotland in December and load for me . . . but you'd have to pay your own expenses.
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Joined: Feb 2012
Posts: 601 Likes: 39
Sidelock
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Sidelock
Joined: Feb 2012
Posts: 601 Likes: 39 |
Larry,
Tim shot very well on all of the venues but that was an outstanding job on the flurry with one gun.
re. the offer to be your loader I'll have to decline as I don't want to be eating & sleeping in the servants quarters.
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