Firearms

Need Gun Information? Ask a Firearms Expert for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Firearms
This answer was rated:

Are say 4” barreled guns more susceptible to wear than say…

Are say 4” barreled...

Are say 4” barreled guns more susceptible
to wear than say 6” barreled guns due to
higher average PSI when pushing the
PSI boundaries?

Expert's Assistant: How can the Gunsmith help you with your firearm? Please tell me everything you can so the Gunsmith can help you best.

Its a general ballistics question, I got a spread sheet off the internet and it sows the pressures going up as the barrel gets shorter-- was wondering if this is a real world consideration.

Expert's Assistant: Is there anything else the Gunsmith should be aware of?

Well for instance I've read that s&w m25 was good for about 25K psi, with the same ammo as the barrel gets longer (according to the spread sheet) the av PSI goes down. Is this real thing to be aware of?

Show More
Show Less
Ask Your Own Firearms Question
Answered in 30 minutes by:
1/20/2018
Jon
Jon, Consultant
Category: Firearms
Satisfied Customers: 1,443
Experience: Professional Gunsmith, Certified Police Firearms Instructor, Concealed Carry Instructor, Journeyman Machinist and Firearms Enthusiast.
Verified

Hi,

My name is Jon. I will do my best to help.

It is questions like this that lead to years long debates even among the experts.

There are a number of variables at play here like: Is this measurement of chamber pressure or barrel pressure, at what point in the barrel is the pressure being measured or at what time in the internal ballistics process is it being measured.

Here is what wk know for sure, the peak pressure inside of barrel takes place with in about 1" to 2" of the seated bullets original position on the loaded cartridge. It is generally true that the bullet will exit the barrel of a shorter barrel firearm at a higher pressure that the same bullet exiting the barrel of a longer barreled firearm. However in either case the maximum pressure has already been reached before the bullet leaves the barrel. But to answer your question is a 4" more susceptible to wear than a 6"? Maybe, but I think the any difference would be so small that it would never be noticed, or even be measurable. I hope this helps.

Please let me know if I have answered your question.

If have answered all your questions and helped you, please rate my answer. I am not paid by the site until you do. It does not cost you anything more to rate the answer, and I will continue to be available if you have more questions on the item. Thank you.

At the top left above our post are a series of 5 stars. I always strive for 5 star service, but please rate as you feel is appropriate. However, if you are considering a low rating, please try to give me the opportunity to improve my service to you first!

If you’d like to request me for future questions, please put " for Jon only" in your post. I respond to requested questions first.

Sincerely,

Jon

Ask Your Own Firearms Question
Customer reply replied 30 days ago
OK. So since the peak takes place in the first inch or two we would think say the 4" gun would likely not be damaged by missing out on the less damaging part of the curve that the 6"+ inch barrel would experience on a barrel length vs psi graph? So I take it that you would not be particularly concerned about the long term wear on a gun where say with a six inch barrel the ave PSI was within the recommend limit but the same gun exceeded it with 4" barrel? I have noticed by plugging in the weight and known or assumed speed for a 4" from various ammos into this spread sheet (for the s&w m25) the 25K limit seems to crop up fairly often-- like the ammo manufactures are aware of it and are trying to stay near it for a 4" barrel.
Customer reply replied 30 days ago
OK no phone call needed. The last message was just an attempt to confirm what you said. Thx

Yes, I would have to agree with both statements. As long as you are operating withing a safe PSI level you should be fine. I don't think you would ever be able to see any noticeable difference in the amount of wear of different barrel lengths.

Please let me know if I have answered your question.

If have answered all your questions and helped you, please rate my answer. I am not paid by the site until you do. It does not cost you anything more to rate the answer, and I will continue to be available if you have more questions on the item. Thank you.

At the top left above our post are a series of 5 stars. I always strive for 5 star service, but please rate as you feel is appropriate. However, if you are considering a low rating, please try to give me the opportunity to improve my service to you first!

If you’d like to request me for future questions, please put " for Jon only" in your post. I respond to requested questions first.

Sincerely,

Jon

Jon
Jon, Consultant
Category: Firearms
Satisfied Customers: 1,443
Experience: Professional Gunsmith, Certified Police Firearms Instructor, Concealed Carry Instructor, Journeyman Machinist and Firearms Enthusiast.
Verified
Jon and 87 other Firearms Specialists are ready to help you
Ask your own question now
Ask Jon Your Own Question
Jon
Jon
Jon, Consultant
Category: Firearms
Satisfied Customers: 1,443
1,443 Satisfied Customers
Experience: Professional Gunsmith, Certified Police Firearms Instructor, Concealed Carry Instructor, Journeyman Machinist and Firearms Enthusiast.

Jon is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

TOM

TOM

Gunsmith

4,129 satisfied customers

17 YRS EXPERIENCE,Certified Armorer

Philip Van Cleave

Philip Van Cleave

Firearms Instructor

2,566 satisfied customers

Firearms instructor, 40 years experience with firearms.

Bill

Bill

Gunsmith

2,078 satisfied customers

40 yrs. experience as master machinist/tool and die maker and gunsmith. I own and operate a tool and die shop and custom gunsmithing/gunmaking shop.

Ken

Ken

Gunsmith

2 satisfied customers

Licensed Gunsmith for 7 years, 8+ years Cowboy Action Shooter, Life-long Firearms Enthusiast

Chasseur

Chasseur

Importer and FFL.

45 satisfied customers

Business owner

H.Callahan

H.Callahan

Consultant

45 satisfied customers

Ex-Cop & Dept. Cert. Firearms Inst., Ex-FFL Dealer, Reloader

Jesse Handel

Jesse Handel

Hobbyist

13 satisfied customers

15 yrs hunting. I own and maintain many kinds of guns.

< Previous | Next >

Related Firearms Questions
Philip I have another gun it's serial number is in the 6100
Philip I have another Parker gun it's serial number is ***** the 6100 no markings on it except twisted barrel on top with Parker bros and right below the serial number is ***** C and a 7 by the barrel… read more
Philip Van Cleave
Philip Van Cleave
Firearms Instructor
Master's Degree
2,566 satisfied customers
I have a Winchester model 90 serial # 660211 octagon barrel
I have a Winchester model 90 serial # 660211 octagon barrel 22 short. Very good conditioning but missing feeder tube. I'm looking for replacement as well as approximate value. Can u help? Thanks, tom … read more
Jon
Jon
Consultant
1,443 satisfied customers
Was trying to find info on the CF 1911's. Gun Markings:
Gun Markings:Right Side Of Slide: Patented Dec. 19, 1905 Feb. 14, 1911, Aug. 19,1913 COLT'S PT. F. A.MFG.CO.A Circle with: Remington UMC printed inside of circleMANUFACTURED BY REMINGTON ARMS UMC CO. INC. BRIDGEPORT, CONN U.S.ALeft Side Of Slide: MODEL CF 1911 U.S. ARMY CALBER .45Left Side Of Frame: UNITED STATES PROPERTYRight Side Of Frame: NO10104Left Side Of Trigger Guard: Front Edge Stamped: E Rear Edge Stamped: E.E.C … read more
SportsCollector
SportsCollector
President / Chief Firearms Instructor, B
Various law enforcement academies
57 satisfied customers
I have an overs .22 supershot sealed eight L24518 serial
I have an overs Johnson .22 supershot sealed eight L24518 serial number … read more
Jon
Jon
Consultant
1,443 satisfied customers
I have a Marlin Model 20-A Hex barrel .22 and I would say it
I have a Marlin Model 20-A Hex barrel .22 and I would say it is in very good condition what would be the value range ? I don't know where the SN is located or would send it to you. thanks *****: How c… read more
SportsCollector
SportsCollector
President / Chief Firearms Instructor, B
Various law enforcement academies
57 satisfied customers
My father who lived in Fla willed to me two pistols and one
my father who lived in Fla willed to me two pistols and one WW II rifle. My wife and brother are traveling there from Va to transport these back along with other house goods, etc. Im concerned on how … read more
Jon
Jon
Consultant
1,443 satisfied customers
I have a colt ssa serial gracie. can't find the date of
I have a colt ssa serial gracie. can't find the date of manufacture … read more
SportsCollector
SportsCollector
President / Chief Firearms Instructor, B
Various law enforcement academies
57 satisfied customers
I have a Model 1890 with a serial number 91xxx how would i
I have a Model 1890 with a serial number 91xxx how would i get more info on this rifle? worth, birth year etc? … read more
SportsCollector
SportsCollector
President / Chief Firearms Instructor, B
Various law enforcement academies
57 satisfied customers
I bought an 1836 32 Sp at an auction whats it worth? 8 out
i bought an 1836 32 Sp at an auction whats it worth? … read more
SportsCollector
SportsCollector
President / Chief Firearms Instructor, B
Various law enforcement academies
57 satisfied customers
I have a S.W. 4013 single stack pistol and am looking for a
I have a S.W. 4013 single stack pistol and am looking for a grip laser for it. … read more
Jon
Jon
Consultant
1,443 satisfied customers
Just bought a ww greener shot gun serial number 11128.
Hello just bought a ww greener shot gun serial number 11128 … read more
Philip Van Cleave
Philip Van Cleave
Firearms Instructor
Master's Degree
2,566 satisfied customers
Have a T. C. Montgomery Double 12 - great shape - serial
Have a T. C. Montgomery Double 12 - great shape - serial #47887 - hammered - London laminated steel - scroll work on side plates and underbelly - any idea of manufacture date and ball park value - ver… read more
Jon
Jon
Consultant
1,443 satisfied customers
I have a Remington .30 caliber rifle, pump action.
I have a Remington .30 caliber rifle, pump action. Information on the gun reads Remington Works, Ilion, New York USA. Neminton Arms--Union Metallic Cartridge Co.. No#G18021. Remington UMC Trade Mark. … read more
Big River Guns
Big River Guns
303 satisfied customers
I HAVE A DOUBLE BARREL, DOUBLE TRIGGER XL CR SHOTGUN MADE BY
I HAVE A DOUBLE BARREL, DOUBLE TRIGGER XL CR SHOTGUN MADE BY THE W. BINGHAM CO. OUT OF CLEVELAND, OHIO. IT WAS MY HUSBAND.S GRANDFATHER.S. MY HUSBAND DIED 2 YEARS AGO AT THE AGE OF 75. ANYWAY I NEED T… read more
SportsCollector
SportsCollector
President / Chief Firearms Instructor, B
Various law enforcement academies
57 satisfied customers
I'm working on a BSA 7MM Magnum bolt action rifle with an
Hi Pearl, I'm working on a BSA 7MM Magnum bolt action rifle with an extraction problem. I am trying to find out how to disassemble the bolt. Can you help? … read more
TOM
TOM
Gunsmith
Law Enforcement Armorer
4,129 satisfied customers
ARE THERE ANY COLT WALTHER, 22LR M4 AVAIL. WHERE CAN I FIND
ARE THERE ANY COLT WALTHER, 22LR M4 AVAIL. JA: How can the Gunsmith help you with your firearm? Please tell me everything you can so the Gunsmith can help you best. Customer: WHERE CAN I FIND A JA: Is… read more
Jon
Jon
Consultant
1,443 satisfied customers
Have 12 hunter arms the Fulton s/n 2374f looking for value.
Have 12 hunter arms the Fulton s/n 2374f looking for value … read more
SportsCollector
SportsCollector
President / Chief Firearms Instructor, B
Various law enforcement academies
57 satisfied customers
Thanks, inherited remington model 11 sn 1014636. Good shape,
thanks Tom, inherited remington model 11 sn(###) ###-####… read more
Big River Guns
Big River Guns
303 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x