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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Gun Discharges While Chambering Round
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<blockquote data-quote="Fiftydriver" data-source="post: 66691" data-attributes="member: 10"><p>Mr Ranger,</p><p></p><p>Do not do anything with this rifle until you take it to a smith and let them check that sear angle out.</p><p></p><p>A trigger sear angle should be neutral at worst and preferable a bit positive in angle. That this means is that the angle of the engagement will actually force the two seperate parts harder into engagement instead of away from each other.</p><p></p><p>To check this it is relatively easy. Tighten up your trigger pull weight spring until you have a trigger that will not slip off with a few heavy blows with a hard rubber mallet.</p><p></p><p>Make sure the rifle is unloaded and I would not recommend doing rifle work in doors!!!</p><p></p><p>Test the trigger pull weight with a quality trigger pull guage. Note the poundage needed to trip the trigger.</p><p></p><p>Now recock the bolt and rap on the receiver 10 good blows with the mallet. Youdo not have to beat the hell out of the receiver but give it some good wacks. </p><p></p><p>If the sear angle is negative(very unsafe), the trigger will either slip off during these 10 blows or the trigger pull will decrease after these impacts because the trigger/sear engagement will slip and become less.</p><p></p><p>So if you get a trigger pull of 4.0 lbs and then a pull of 3.5 lbs after you have impacted the receiver 10 times you have a negative sear engagement angle, very unsafe and not acceptible.</p><p></p><p>If the sear angle is neutral then the standard pull weight and the pull weight after the impacts will be identical. This is marginal on the safety side and I personally do not accept neutral engagement angles.</p><p></p><p>If it is positive, you will actually have the trigger pull increase from a standard pull to the pull after the impacts. This is because the positive angle is actually driving the sear contact deeper with each impact, this is very good and as safe as possible.</p><p></p><p>You can do this simple test at home if you have a quality trigger pull guage and a non marking mallet.</p><p></p><p>I have taken the Win 70 trigger down to 8 oz several times with total safety. Not all will accept this but a properly cut M70 trigger can be tuned down to very light pulls.</p><p></p><p>If your trigger is negative, I would look into an aftermarket trigger as the Win 70 sear notch is very small and can be difficult to true up.</p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 66691, member: 10"] Mr Ranger, Do not do anything with this rifle until you take it to a smith and let them check that sear angle out. A trigger sear angle should be neutral at worst and preferable a bit positive in angle. That this means is that the angle of the engagement will actually force the two seperate parts harder into engagement instead of away from each other. To check this it is relatively easy. Tighten up your trigger pull weight spring until you have a trigger that will not slip off with a few heavy blows with a hard rubber mallet. Make sure the rifle is unloaded and I would not recommend doing rifle work in doors!!! Test the trigger pull weight with a quality trigger pull guage. Note the poundage needed to trip the trigger. Now recock the bolt and rap on the receiver 10 good blows with the mallet. Youdo not have to beat the hell out of the receiver but give it some good wacks. If the sear angle is negative(very unsafe), the trigger will either slip off during these 10 blows or the trigger pull will decrease after these impacts because the trigger/sear engagement will slip and become less. So if you get a trigger pull of 4.0 lbs and then a pull of 3.5 lbs after you have impacted the receiver 10 times you have a negative sear engagement angle, very unsafe and not acceptible. If the sear angle is neutral then the standard pull weight and the pull weight after the impacts will be identical. This is marginal on the safety side and I personally do not accept neutral engagement angles. If it is positive, you will actually have the trigger pull increase from a standard pull to the pull after the impacts. This is because the positive angle is actually driving the sear contact deeper with each impact, this is very good and as safe as possible. You can do this simple test at home if you have a quality trigger pull guage and a non marking mallet. I have taken the Win 70 trigger down to 8 oz several times with total safety. Not all will accept this but a properly cut M70 trigger can be tuned down to very light pulls. If your trigger is negative, I would look into an aftermarket trigger as the Win 70 sear notch is very small and can be difficult to true up. Good Shooting!! Kirby Allen(50) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Gun Discharges While Chambering Round
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