thiinking i need some re-education

Jeff2131 · February 17, 2014, 06:01 PM

I recently posted a reply to someone. I mentioned "dwell time" in conjuction with a heavier crimp. After posting, what i thought was good advice, i starting questioning myself and whether or not i used the.correct terminology. I was under the impression that "dwell time" was the fraction of amount of time that the bullet holds firm in the case while pressure builds to a point in which it can push the bullet from its hold in the case.

Then i.was reading and found dwell time associated with gun recoil....so now im not sure my response was accurate or if im just not referring to it in the correct terminology.

Anybody feel like educating me on dwell time and what i thought dwell time was?

Urban_Redneck · February 17, 2014, 06:49 PM

I've most often heard "dwell" used to describe the interval between firing and when a semi-auto unlocks.

Idaho Spud · February 17, 2014, 07:04 PM

Maybe it means the same for both. Doesn't really matter. (to me) Kinda like mags and clips. We all know what's meant. I read your post and I'm going with "dwell". Sounds good to me. And I THINK I know what you mean.

Jeff2131 · February 17, 2014, 09:38 PM

Yea, the guy was having issues with stove piping even after going near or over max loads, so i suggested a heavier crimp on the bullet to help the pressure build enough to give him a "snappier" round to allow his berretta's action to function properly. I always associated dwell with the amount of time the bullet hangs in the case before the pressure builds enough to push it out. Just wasnt sure i had the right idea and terminology correct. Made sense to me but i didnt wanna be spoutting off suggestions that were inaccurate ya know.

Wreck-n-Crew · February 17, 2014, 09:58 PM

Well I have to commend you on checking it out. I am sure most reloaders are cautious and want to give the correct advice.

I have always known Dwell time to be the firing time to unlocking time as well. Dwell definition: https://www.google.com/search?q=dwel...-US:IE-Address

If in fact dwell occurs with longer intervals in time due to a tighter crimp then the word was definitely in the right context from what you described in your response. No worries...

HiBC · February 18, 2014, 12:28 PM

I wonder if Funk and Wagnall reloaded.We try to communicate an idea,and select from an inventory of words.

IMO,if we understand each other,mission accomplished.You did fine.

To your original question,unless it was a subload,I would look to tuning extractor/ejector.

**44 AMP** · February 19, 2014, 12:44 PM

Dwell time means an interval between two events. Everything else is the context. There is "dwell time" in a moon rocket launch (notice they start the engines on 3, but liftoff is after 1 in the countdown).

Caliber has different meanings, depending on context. Lots of things do. Using a general dictionary for the precise definition of a technical term in context is useless. The dictionaries themselves even say so (just not in those exact words). The all say that they define the words as found "in common usage".

The usage of terms in a technical discussion is NOT "in common usage".

Goatwhiskers · February 20, 2014, 10:51 AM

I thought dwell time was the length of time that a set of ignition points in a distributor stayed in contact. Shows how old I am.

GW

243winxb · February 20, 2014, 11:34 AM

Maybe this??

Time lag definition- "a period of time between two related actions (such as a cause and its effect)." Primer fires-pressure builds, time lag-bullet moves. The time lag would increase/decrease depending on the lbs of bullet pull. (5.56mm is 35 lbs minimum). Bullet pull can be measured. On seating a bullet, if the neck area expands .002" this will give about 35 to 45 lbs in a 223 rem round. The crimp would help to raise the bullet pull weight & time lag also.

243winxb · February 20, 2014, 11:48 AM

dwell time

noun
technical

noun: dwell time; plural noun: dwell times

1.

time spent in the same position, area, or stage of a process.

Jeff2131 · February 21, 2014, 06:58 AM

Goatwhiskers....hahahaha...yes. fellow mechanic here. That definition of dwell time is correct! I still have a meter that does dwell too.

February 17, 2014, 06:01 PM	#1
Jeff2131 Senior Member Join Date: November 30, 2012 Location: Spring City, PA Posts: 497	thiinking i need some re-education I recently posted a reply to someone. I mentioned "dwell time" in conjuction with a heavier crimp. After posting, what i thought was good advice, i starting questioning myself and whether or not i used the.correct terminology. I was under the impression that "dwell time" was the fraction of amount of time that the bullet holds firm in the case while pressure builds to a point in which it can push the bullet from its hold in the case. Then i.was reading and found dwell time associated with gun recoil....so now im not sure my response was accurate or if im just not referring to it in the correct terminology. Anybody feel like educating me on dwell time and what i thought dwell time was? __________________ ---I DON'T DIAL 911---

February 17, 2014, 07:04 PM	#3
Idaho Spud Senior Member Join Date: April 7, 2010 Posts: 330	Maybe it means the same for both. Doesn't really matter. (to me) Kinda like mags and clips. We all know what's meant. I read your post and I'm going with "dwell". Sounds good to me. And I THINK I know what you mean. __________________ "I should have picked alcohol, drugs, or beating my wife..." Pete Rose

February 17, 2014, 09:38 PM	#4
Jeff2131 Senior Member Join Date: November 30, 2012 Location: Spring City, PA Posts: 497	Yea, the guy was having issues with stove piping even after going near or over max loads, so i suggested a heavier crimp on the bullet to help the pressure build enough to give him a "snappier" round to allow his berretta's action to function properly. I always associated dwell with the amount of time the bullet hangs in the case before the pressure builds enough to push it out. Just wasnt sure i had the right idea and terminology correct. Made sense to me but i didnt wanna be spoutting off suggestions that were inaccurate ya know. __________________ ---I DON'T DIAL 911---

February 17, 2014, 09:58 PM	#5
Wreck-n-Crew Senior Member Join Date: March 8, 2013 Location: Ohio Posts: 1,820	Well I have to commend you on checking it out. I am sure most reloaders are cautious and want to give the correct advice. I have always known Dwell time to be the firing time to unlocking time as well. Dwell definition: https://www.google.com/search?q=dwel...-US:IE-Address If in fact dwell occurs with longer intervals in time due to a tighter crimp then the word was definitely in the right context from what you described in your response. No worries... __________________ If you ever have to use a firearm, *you don't get to pick the scenario!*

February 19, 2014, 12:44 PM	#7
44 AMP Staff Join Date: March 11, 2006 Location: Upper US Posts: 28,846	Dwell time means an interval between two events. Everything else is the context. There is "dwell time" in a moon rocket launch (notice they start the engines on 3, but liftoff is after 1 in the countdown). Caliber has different meanings, depending on context. Lots of things do. Using a general dictionary for the precise definition of a technical term in context is useless. The dictionaries themselves even say so (just not in those exact words). The all say that they define the words as found "in common usage". The usage of terms in a technical discussion is NOT "in common usage". __________________ All else being equal (and it almost never is) bigger bullets tend to work better.

February 17, 2014, 06:49 PM	#2
Urban_Redneck Member Join Date: June 23, 2013 Posts: 73	I've most often heard "dwell" used to describe the interval between firing and when a semi-auto unlocks.

February 18, 2014, 12:28 PM	#6
HiBC Senior Member Join Date: November 13, 2006 Posts: 8,288	I wonder if Funk and Wagnall reloaded.We try to communicate an idea,and select from an inventory of words. IMO,if we understand each other,mission accomplished.You did fine. To your original question,unless it was a subload,I would look to tuning extractor/ejector.

February 20, 2014, 10:51 AM	#8
Goatwhiskers Senior Member Join Date: April 8, 2009 Location: Batchelor, La. Posts: 579	I thought dwell time was the length of time that a set of ignition points in a distributor stayed in contact. Shows how old I am. GW

February 20, 2014, 11:34 AM	#9
243winxb Senior Member Join Date: July 26, 2011 Location: USA Posts: 1,730	Time Lag Maybe this?? Time lag definition- "a period of time between two related actions (such as a cause and its effect)." Primer fires-pressure builds, time lag-bullet moves. The time lag would increase/decrease depending on the lbs of bullet pull. (5.56mm is 35 lbs minimum). Bullet pull can be measured. On seating a bullet, if the neck area expands .002" this will give about 35 to 45 lbs in a 223 rem round. The crimp would help to raise the bullet pull weight & time lag also.

February 20, 2014, 11:48 AM	#10
243winxb Senior Member Join Date: July 26, 2011 Location: USA Posts: 1,730	dwell time noun technical noun: dwell time; plural noun: dwell times 1. time spent in the same position, area, or stage of a process.

February 21, 2014, 06:58 AM	#11
Jeff2131 Senior Member Join Date: November 30, 2012 Location: Spring City, PA Posts: 497	Goatwhiskers....hahahaha...yes. fellow mechanic here. That definition of dwell time is correct! I still have a meter that does dwell too. __________________ ---I DON'T DIAL 911---