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 ???
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="J E Custom" data-source="post: 1212590" data-attributes="member: 2736"><p>Opinions are about all you will get because there is no one thing that is considered a cold bore except a cold bore. (Barrel is at the ambient temperature)</p><p></p><p>A cold bore can be cold and fouled, cold and clean, cold and oily, cold and dirty (with dust and dirt)</p><p>and ETC. and all will/can have an effect on accuracy or a POI shift. as the temperature of a barrel rises, there are many things that can effect the POI, Poor or no bedding, poor smithing where nothing is square or on centers, barrel is not concentric to the bore, contact with the stock and many more things can effect the poi as the barrel heats up. </p><p></p><p>The trick is to know your barrel and deal with it. I have several rifles that the first shot (Cold Bore)</p><p>shoots high and left about 1/2 moa from the Zero. after that they shoot where zeroed. so I shoot one fouling shot, Pull a bore snake through it and it is ready to go hunting and is good for 4 or 5 accurate shots. This is caused by oil left in the bore after cleaning and dry patching will improve it a little but these rifles still need a fouling shot before going hunting. after this first shot the poi will not change until I clean it again.</p><p></p><p>I have other barrels that don't need this fouling shot, just dry patching.</p><p></p><p>For match shooting this is normally not an issue because you normally have one or two sighters before you start the record shots. (But it is a must to know so you wont use the first shot for a final zero)</p><p></p><p>The term "Cold Bore"normally means that the barrel is at ambient temperature no matter what condition it is in. </p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1212590, member: 2736"] Opinions are about all you will get because there is no one thing that is considered a cold bore except a cold bore. (Barrel is at the ambient temperature) A cold bore can be cold and fouled, cold and clean, cold and oily, cold and dirty (with dust and dirt) and ETC. and all will/can have an effect on accuracy or a POI shift. as the temperature of a barrel rises, there are many things that can effect the POI, Poor or no bedding, poor smithing where nothing is square or on centers, barrel is not concentric to the bore, contact with the stock and many more things can effect the poi as the barrel heats up. The trick is to know your barrel and deal with it. I have several rifles that the first shot (Cold Bore) shoots high and left about 1/2 moa from the Zero. after that they shoot where zeroed. so I shoot one fouling shot, Pull a bore snake through it and it is ready to go hunting and is good for 4 or 5 accurate shots. This is caused by oil left in the bore after cleaning and dry patching will improve it a little but these rifles still need a fouling shot before going hunting. after this first shot the poi will not change until I clean it again. I have other barrels that don't need this fouling shot, just dry patching. For match shooting this is normally not an issue because you normally have one or two sighters before you start the record shots. (But it is a must to know so you wont use the first shot for a final zero) The term "Cold Bore"normally means that the barrel is at ambient temperature no matter what condition it is in. J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
cold bore ???
Top