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
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Minimum book load w/ high pressure signs
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="Josh Smith" data-source="post: 773845" data-attributes="member: 25978"><p>Jacket thickness, and bearing surface.</p><p></p><p>Back when the military folks of several countries were playing with their first smokeless powder rifles, they had long-bearing surface, round nose jacketed bullets.</p><p></p><p>Lots of people got blown up by pressure spikes. This is one reason the bore on the Gewehr 88 was increased from 0.318" initially to 0.321" and eventually 0.323" to help reduce pressure spikes due to the bearing surfaces of those original, 221 grain (IIRC) bullets.</p><p></p><p>When low bearing surface 150 grain S bullets were introduced with the 7.92x57js (is) round, they were able to keep full-bore bullets.</p><p></p><p>This is how the modern 8mm round became more than 8mm!</p><p></p><p>Regards,</p><p></p><p>Josh</p></blockquote><p></p>
[QUOTE="Josh Smith, post: 773845, member: 25978"] Jacket thickness, and bearing surface. Back when the military folks of several countries were playing with their first smokeless powder rifles, they had long-bearing surface, round nose jacketed bullets. Lots of people got blown up by pressure spikes. This is one reason the bore on the Gewehr 88 was increased from 0.318" initially to 0.321" and eventually 0.323" to help reduce pressure spikes due to the bearing surfaces of those original, 221 grain (IIRC) bullets. When low bearing surface 150 grain S bullets were introduced with the 7.92x57js (is) round, they were able to keep full-bore bullets. This is how the modern 8mm round became more than 8mm! Regards, Josh [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Minimum book load w/ high pressure signs
Top