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Rifles, Reloading, Optics, Equipment
Reloading
Sticky bolt.
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<blockquote data-quote="AFA82" data-source="post: 975363" data-attributes="member: 17270"><p>Hello ladies and gents,</p><p></p><p>I have been playing around with 170gr Lapua Lock Base bullets for a bit recently (in a .308).</p><p>My load is 44.5grs of N540 in Lapua cases with cci br2's.</p><p>I get 2840fps with minimal variations, in other words its very accurate out to 1200m.</p><p>The rifle in question is a Weatherby Vanguard with a 27" Lothar Palma match barrel (1:13 twist)</p><p>This load pretty much replicates the HPS factory Lapua ammo.</p><p></p><p>HOWEVER!</p><p></p><p>The issue is that I get pressure signs in the form of a sticky bolt, not much but enough to call it a "sticky bolt". With the Factory HPS ammo I never have this.</p><p>Since 44.5grs according to the big book is well under max pressure, I am at a lose as to why I'm getting this excessive pressure sign.</p><p>I've tried neck sizing and full length re-sizing but same result.</p><p>Primers look fine, not pancaked.</p><p>Could I just simply have a roughly cut chamber that needs polishing or should I look elsewhere to solve this problem.</p><p>I would love to make this combo work since its so accurate to long ranges and I have recently stashed up on 170 LB's and N540.</p><p>Many thanks, and if someone could be kind enough to run this load through Quickload I would very much appreciate it.</p><p></p><p>After shooting these possible over pressure loads, would the rifle still be safe to shoot?</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="AFA82, post: 975363, member: 17270"] Hello ladies and gents, I have been playing around with 170gr Lapua Lock Base bullets for a bit recently (in a .308). My load is 44.5grs of N540 in Lapua cases with cci br2's. I get 2840fps with minimal variations, in other words its very accurate out to 1200m. The rifle in question is a Weatherby Vanguard with a 27" Lothar Palma match barrel (1:13 twist) This load pretty much replicates the HPS factory Lapua ammo. HOWEVER! The issue is that I get pressure signs in the form of a sticky bolt, not much but enough to call it a "sticky bolt". With the Factory HPS ammo I never have this. Since 44.5grs according to the big book is well under max pressure, I am at a lose as to why I'm getting this excessive pressure sign. I've tried neck sizing and full length re-sizing but same result. Primers look fine, not pancaked. Could I just simply have a roughly cut chamber that needs polishing or should I look elsewhere to solve this problem. I would love to make this combo work since its so accurate to long ranges and I have recently stashed up on 170 LB's and N540. Many thanks, and if someone could be kind enough to run this load through Quickload I would very much appreciate it. After shooting these possible over pressure loads, would the rifle still be safe to shoot? Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Sticky bolt.
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