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How bad did I break it?
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<blockquote data-quote="Fiftydriver" data-source="post: 72808" data-attributes="member: 10"><p>Dakor,</p><p></p><p>I suspect you have not done any damage to your rifle. Only area that may be effected is the locking lug surfaces but take a quick look at the back of the lugs and that will tell you all you need to know there. If they are gauled up at all they will need to be relapped.</p><p></p><p>I have not seen this level of variation in the Wildcat Bullets but I will say that anytime you shoot a very long and heavy bullet the increase in pressure will be more for each .5 gr of powder increase then it will be for a shorter bullet. </p><p></p><p>Also, these have thicker jackets then conventional match bullets so this also increases pressure.</p><p></p><p>What velocity were you getting at 50.5 gr. I suspect it was pretty high if things were that close to the edge.</p><p></p><p>I an relate one example where I have seen something similiar to this. I had developed loads in my 257 Allen Mag with the 130 gr Bonded Core FBHP bullet. Top loads were clipping along at 3650 fps. This bullet used a J-4 jacket which is quite thin. </p><p></p><p>Well on game performance proved a bit limited at this velocity level so Richard redesigned the bullet with a very heavy jacket and sent me some of the new prototype bullets. I knocked 5 grains off the load I was using and tested the first loads. Where the thin jacketed 130 gr bullets were totally comfortable at the higher load, the much thicker jackets proved that even the lower load created identical pressure as the velocity was 3640 fps with 5 grains less powder and the stouter bullet.</p><p></p><p>Luckily I was using 8700 which has a very shallow pressure curve compared to RL-22 so I had no problems with bolt lift, extraction or ejection.</p><p></p><p>I increased the powder charge by 1 gr, remember this is in a case with a +100 gr capacity and the bolt lift was heavy and the primer fell out of the case as it was ejected.</p><p></p><p>Point being the Chronograph is the best tool to predict pressure with a new bullet. </p><p></p><p>Just curious how these 50.5 gr loads compared with your A-Max loads in velocity.</p><p></p><p>I am sure there is no permament damage to your rifle if any at all. Make sure the bolt body is clear of primer jacket when the case is removed to prevent the firing pin from wedging in the bolt body. This can be a pain to get freed in some cases.</p><p></p><p>Also, make sure the firing pin head is polished round and smooth. Any burrs will raise hell with primer jackets and generally, anytime a primer is pierced your firing pin head is scored and should be repolished. This is extremely easy to do so there really should not be a charge from your smith.</p><p></p><p>Let us know how things go, I feel bad for the trouble you had /ubbthreads/images/graemlins/frown.gif!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 72808, member: 10"] Dakor, I suspect you have not done any damage to your rifle. Only area that may be effected is the locking lug surfaces but take a quick look at the back of the lugs and that will tell you all you need to know there. If they are gauled up at all they will need to be relapped. I have not seen this level of variation in the Wildcat Bullets but I will say that anytime you shoot a very long and heavy bullet the increase in pressure will be more for each .5 gr of powder increase then it will be for a shorter bullet. Also, these have thicker jackets then conventional match bullets so this also increases pressure. What velocity were you getting at 50.5 gr. I suspect it was pretty high if things were that close to the edge. I an relate one example where I have seen something similiar to this. I had developed loads in my 257 Allen Mag with the 130 gr Bonded Core FBHP bullet. Top loads were clipping along at 3650 fps. This bullet used a J-4 jacket which is quite thin. Well on game performance proved a bit limited at this velocity level so Richard redesigned the bullet with a very heavy jacket and sent me some of the new prototype bullets. I knocked 5 grains off the load I was using and tested the first loads. Where the thin jacketed 130 gr bullets were totally comfortable at the higher load, the much thicker jackets proved that even the lower load created identical pressure as the velocity was 3640 fps with 5 grains less powder and the stouter bullet. Luckily I was using 8700 which has a very shallow pressure curve compared to RL-22 so I had no problems with bolt lift, extraction or ejection. I increased the powder charge by 1 gr, remember this is in a case with a +100 gr capacity and the bolt lift was heavy and the primer fell out of the case as it was ejected. Point being the Chronograph is the best tool to predict pressure with a new bullet. Just curious how these 50.5 gr loads compared with your A-Max loads in velocity. I am sure there is no permament damage to your rifle if any at all. Make sure the bolt body is clear of primer jacket when the case is removed to prevent the firing pin from wedging in the bolt body. This can be a pain to get freed in some cases. Also, make sure the firing pin head is polished round and smooth. Any burrs will raise hell with primer jackets and generally, anytime a primer is pierced your firing pin head is scored and should be repolished. This is extremely easy to do so there really should not be a charge from your smith. Let us know how things go, I feel bad for the trouble you had [img]/ubbthreads/images/graemlins/frown.gif[/img]!! Kirby Allen(50) [/QUOTE]
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