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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Copper fouling
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<blockquote data-quote="LoneTraveler" data-source="post: 1086994" data-attributes="member: 77249"><p>Many modern factory barrels come up lacking. I have some way lapped several barrels getting them to shoot the way the owners wants the gun to. In 2004 I bought a new 300 WSM that had just came on the market stainless barrel, Action and hand laid Syn. Stock. While waiting for the rifle to arrive I read reviews, I read several stories about these guns not shooting to buyers wants out of the box. When my rifle arrived I started loading for the range. My first 40 rounds was cast bullets. 10 with medium Midway fire lap compound, Then 30 with fine fire lap compound. (Midway Kit Used) cleaned barrel every 5 shots. At the end of these 40 cast, gas check fire lap rounds. Cleaned the barrel and started with jacketed bullets. The first group with 180 Gr. Sierra Bullets measured 9/16 of an inch at 100 yds. This rifle has became my go to rifle, Light and accurate. If I buy another factory rifle, I will bore scope it and start from there on my plan of action. </p><p>A sharp rough edge on a land can effect down range performance on game also. When I worked in a taxidermy shop we recovered many bullets from deer hides. We recovered some that the jacket had ruptured on a land edge from the rifling contact point to the base of the bullet. Sort of looked like a banana that had been stepped on by a fat boy. Very poor penetration on a deer sized animal.</p></blockquote><p></p>
[QUOTE="LoneTraveler, post: 1086994, member: 77249"] Many modern factory barrels come up lacking. I have some way lapped several barrels getting them to shoot the way the owners wants the gun to. In 2004 I bought a new 300 WSM that had just came on the market stainless barrel, Action and hand laid Syn. Stock. While waiting for the rifle to arrive I read reviews, I read several stories about these guns not shooting to buyers wants out of the box. When my rifle arrived I started loading for the range. My first 40 rounds was cast bullets. 10 with medium Midway fire lap compound, Then 30 with fine fire lap compound. (Midway Kit Used) cleaned barrel every 5 shots. At the end of these 40 cast, gas check fire lap rounds. Cleaned the barrel and started with jacketed bullets. The first group with 180 Gr. Sierra Bullets measured 9/16 of an inch at 100 yds. This rifle has became my go to rifle, Light and accurate. If I buy another factory rifle, I will bore scope it and start from there on my plan of action. A sharp rough edge on a land can effect down range performance on game also. When I worked in a taxidermy shop we recovered many bullets from deer hides. We recovered some that the jacket had ruptured on a land edge from the rifling contact point to the base of the bullet. Sort of looked like a banana that had been stepped on by a fat boy. Very poor penetration on a deer sized animal. [/QUOTE]
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