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pressure question (Read 1788 times)

argie1891 Senior Forum Member Offline Posts: 268 Location: selah, washington Joined: Jul 8^th, 2010	pressure question Oct 28^th, 2015 at 4:07am	Print Post
	assuming the same powder charge, bullet, case, primer, etc. is the pressure higher with breach seating or seating in the case?? I ask because I have 2 32-40 single shot and got to thinking powder charge in one might be a lot different. Joe

	if you think you have it figured out then you just dont understand
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KAF Ex Member	Re: pressure question Reply #1 - Oct 28^th, 2015 at 11:37am	Print Post
	Here is a guess: Same components same load, powder burning will produce same amount of gases. Breechseated has more space behind bullet = less pressure than fixed bullet. Guess correct?


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frnkeore Frequent Elocutionist Offline Posts: 7729 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: pressure question Reply #2 - Oct 28^th, 2015 at 11:47am	Print Post
	Also, in 32/40 and 4227 powder, it takes about 1/2 gr more powder when BSing to equal velocity the fixed velocity. That would indicate that the pressure is lower if using the same charge. Frank

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argie1891 Senior Forum Member Offline Posts: 268 Location: selah, washington Joined: Jul 8^th, 2010	Re: pressure question Reply #3 - Oct 28^th, 2015 at 2:02pm	Print Post
	thanks for the reply. joe

	if you think you have it figured out then you just dont understand
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