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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
need advice plz
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<blockquote data-quote="MacDonald" data-source="post: 518848" data-attributes="member: 31799"><p>Hi to all out there, I am in the process of breaking in a new barrel, have fired the first 20 roungun)ds cleaning after each shot. Am now at the point of shooting 3 shot groups before cleaning.My first group showed a weird thing, at 50 m and at 100 m the bullets are key holing.</p><p>I have not chronographed, shall do so on next outing.</p><p>Is this some thing to be alarmed about?, does it indicate anything or must I obtain more info, ie speed of bullet etc.</p><p>I would welcome any input please.</p><p>The rifle is a custom 270 , the rounds are 150 grn Sierra game king and I have started the loads at the minimum recommended for our powder which is Somchem</p><p>S365</p><p>Thanks all</p><p>Macdonald</p></blockquote><p></p>
[QUOTE="MacDonald, post: 518848, member: 31799"] Hi to all out there, I am in the process of breaking in a new barrel, have fired the first 20 roungun)ds cleaning after each shot. Am now at the point of shooting 3 shot groups before cleaning.My first group showed a weird thing, at 50 m and at 100 m the bullets are key holing. I have not chronographed, shall do so on next outing. Is this some thing to be alarmed about?, does it indicate anything or must I obtain more info, ie speed of bullet etc. I would welcome any input please. The rifle is a custom 270 , the rounds are 150 grn Sierra game king and I have started the loads at the minimum recommended for our powder which is Somchem S365 Thanks all Macdonald [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
need advice plz
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