Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: Backthrust on actions

*** Enjoy NitroExpress.com? Participate and join in. ***

You are not logged in. [Login]

Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

Double Rifles, Single Shots & Combinations >> Double Rifles

Pages: 1 | 2 | (show all)

NitroX
.700 member

Reged: 25/12/02
Posts: 39883
Loc: Barossa Valley, South Australi...

Re: Backthrust on actions [Re: Hunter4752001]
#346272 - 28/10/20 06:17 PM

Good post.

But did laugh at this. As it IS available in .45/70.

Quote:

It become important when someone claims that because something like the Baikal MP221 can take 30-06 pressures therefore you can use similar pressure loads in the 45-70 variant OOOPS.

Baikal MP-221 45-70 Double Rifle test firing
https://www.youtube.com/watch?v=nc9-j_VFeZ8

A common query is "can I bore out my .45/70 double rifle to a .450 No.2 NE?" eg the Pedersoli hammer DR. That same rifle seems to have had six owners ....

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

Post Extras:

DoubleD
.400 member

Reged: 23/11/03
Posts: 2437
Loc: Retired in Oklahoma

Re: Backthrust on actions [Re: NitroX]
#346277 - 28/10/20 11:29 PM

Bolt thrust is an engineering equation used to determine shear strength for locking lugs in a firearm. From the equation the type of steel can determined for construction of the lugs when you are designing a gun..

If you can determine the type of metal used for the locking lugs in an existing gun you can determine the predicted strength of the lugs.

It is often thrown out in gun build ing discussion

I am sure that bolt thrust is part of the equation into the double gun design, but by its configuration it seems other parameters are involve.

This is at the very tip top of my knowledge on the subject. At college this was touched so we were aware.
Beyond that it was implied that this was higher level of knowledge than was need for an ordinary gunsmith, being in the area of engineering.

I regret not going on and getting the 4 year degree-Manufacturing Engineer.

Edited by DoubleD (28/10/20 11:30 PM)

Post Extras:

Pages: 1 | 2 | (show all)

Extra information

0 registered and 398 anonymous users are browsing this forum.

Moderator: CptCurl

Print Topic

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Topic views: 8998

Jump to

NitroExpress.com

Home | Ezine | Forums | Links | Contact