Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Chatting and General Stuff
General Discussion
300 Varminter Drop and Windage Chart for 600 yards
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Fiftydriver" data-source="post: 206403" data-attributes="member: 10"><p>jwp475,</p><p> </p><p>I build alot of switch barrel rifles, on each I put a reference point in the receiver and the barrel and instruct the customers to torque the barrels to this point and no more and to always make sure the threads are perfectly clean before installing and to use a quality moly based grease on the threads but just as importantly on the contact faces of the receiver, lug and barrel shoulder or any combo that is appropriate for the specific rifle in hand.</p><p> </p><p>This greatly reduces wear on the threads and contact surfaces and if not over torqued, the head space will remain consistant for a lifetime of normal use.</p><p> </p><p>Head space is a critical aspect of safe firearm function, especially with modern high pressure chamberings. That said, if you knew the head space spec in most factory rifles, many would probably never shoot one yet there are very few instances where you have a problem because of this.</p><p> </p><p>I have measured factory rifles with headspace measurements 5, 10 and even 15 thou over what their max should be and all still function fine, there was obviously case stretching on the first firing but after that with proper resizing they functioned perfectly well. Just sloppy machining but my point is that even if the head space increases by a few thou would be ALOT of wear from installing the barrels, you will likely never see any change in function.</p><p> </p><p>Again, close enough is never a good attitude but just a point that shows that headspace is often not as critical as many would think. Just shows how sloppy factory rifles are.</p><p> </p><p>On a properly built custom rifle, I suspect you could easily remove and install a barrel 100 times and see no more then a thou or so change in HS measurement. That is if its removed and installed correctly all 100 times.</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 206403, member: 10"] jwp475, I build alot of switch barrel rifles, on each I put a reference point in the receiver and the barrel and instruct the customers to torque the barrels to this point and no more and to always make sure the threads are perfectly clean before installing and to use a quality moly based grease on the threads but just as importantly on the contact faces of the receiver, lug and barrel shoulder or any combo that is appropriate for the specific rifle in hand. This greatly reduces wear on the threads and contact surfaces and if not over torqued, the head space will remain consistant for a lifetime of normal use. Head space is a critical aspect of safe firearm function, especially with modern high pressure chamberings. That said, if you knew the head space spec in most factory rifles, many would probably never shoot one yet there are very few instances where you have a problem because of this. I have measured factory rifles with headspace measurements 5, 10 and even 15 thou over what their max should be and all still function fine, there was obviously case stretching on the first firing but after that with proper resizing they functioned perfectly well. Just sloppy machining but my point is that even if the head space increases by a few thou would be ALOT of wear from installing the barrels, you will likely never see any change in function. Again, close enough is never a good attitude but just a point that shows that headspace is often not as critical as many would think. Just shows how sloppy factory rifles are. On a properly built custom rifle, I suspect you could easily remove and install a barrel 100 times and see no more then a thou or so change in HS measurement. That is if its removed and installed correctly all 100 times. Kirby Allen(50) [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Chatting and General Stuff
General Discussion
300 Varminter Drop and Windage Chart for 600 yards
Top