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
Introducing the Absolute Hammer
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="RockyMtnMT" data-source="post: 1998859" data-attributes="member: 7999"><p>I don't think we are seeing diminishing returns in larger dia but in larger powder capacity. Not sure if I am smart enough to figure out why, but here is my theory. I think the combined weight of the bullet and powder charge create the the pressure against the brass and action at the initial ignition without creating the extra vel. So if you compare a rum to an 06 with 178g AH the total weight for the 06 is 240g and the rum is 280g.</p><p></p><p>Or the pressure of 100g of powder burn just can't get much more speed regardless of projectile design. We know it isn't a ratio of overbore but so far it looks like just a volume issue. I have a feeling that with the big capacity cartridges we may be able to achieve the same vel with a much shorter barrel. We have a short barrel 375 lapua imp that should be done soon that we can compare with our 30" rifle in the same cartridge. Actions are not equal but should give a good comparison.</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 1998859, member: 7999"] I don't think we are seeing diminishing returns in larger dia but in larger powder capacity. Not sure if I am smart enough to figure out why, but here is my theory. I think the combined weight of the bullet and powder charge create the the pressure against the brass and action at the initial ignition without creating the extra vel. So if you compare a rum to an 06 with 178g AH the total weight for the 06 is 240g and the rum is 280g. Or the pressure of 100g of powder burn just can't get much more speed regardless of projectile design. We know it isn't a ratio of overbore but so far it looks like just a volume issue. I have a feeling that with the big capacity cartridges we may be able to achieve the same vel with a much shorter barrel. We have a short barrel 375 lapua imp that should be done soon that we can compare with our 30" rifle in the same cartridge. Actions are not equal but should give a good comparison. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Introducing the Absolute Hammer
Top