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
Reloading
cold bore accuracy
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="Grumulkin" data-source="post: 834638" data-attributes="member: 29281"><p>The cold bore shot is, of course, the most important one while hunting but I can see why it would be irritating to have the impact point shift. I have a rifle that puts 2 or 3 in the right place before groups walk but that's a little easier t live with. With my rifle, it also doesn't shift the impact point as much as what you're having. Some observations:</p><p></p><p>1. I have a hard time believing that one, two or even 3 shots taken without barrel cool downs would be sufficient to heat a barrel enough to warp it. In my opinion, something else may be going on like perhaps heating of the bore making it slightly smaller which could mean higher pressure and velocity which would cause a lower group. If it is barrel heating and warping of the barrel, it's possible that cryo treatment of the barrel would help.</p><p></p><p>2. You say your groups are from a fouled barrel so I assume there is no oil in the barrel. Oil in a barrel will cause the first few shots to be high.</p><p></p><p>3. I doubt bedding is the issue but it could be that the barrel is pressing on the stock somewhere where it shouldn't be.</p></blockquote><p></p>
[QUOTE="Grumulkin, post: 834638, member: 29281"] The cold bore shot is, of course, the most important one while hunting but I can see why it would be irritating to have the impact point shift. I have a rifle that puts 2 or 3 in the right place before groups walk but that's a little easier t live with. With my rifle, it also doesn't shift the impact point as much as what you're having. Some observations: 1. I have a hard time believing that one, two or even 3 shots taken without barrel cool downs would be sufficient to heat a barrel enough to warp it. In my opinion, something else may be going on like perhaps heating of the bore making it slightly smaller which could mean higher pressure and velocity which would cause a lower group. If it is barrel heating and warping of the barrel, it's possible that cryo treatment of the barrel would help. 2. You say your groups are from a fouled barrel so I assume there is no oil in the barrel. Oil in a barrel will cause the first few shots to be high. 3. I doubt bedding is the issue but it could be that the barrel is pressing on the stock somewhere where it shouldn't be. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
cold bore accuracy
Top