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April 14, 2020, 04:32 PM | #26 | |
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April 14, 2020, 07:08 PM | #27 | |
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usually easiest to just replace the extractor yourself, but you need to have a replacement. Even in the finest of arms, its is possible for the extractor to break and fail at any time. It SHOULD be good for tens of thousands of cycles but it might not be, and no one can tell you for certain if/when it will fail. I got one of the semi auto Tommyguns, used. Gun looked new, clearly it had not been shot very much, The 3rd mag through it, the extractor broke, and it was done. I ordered a replacement. Actually 2 of them. Put one in the bolt, and the other in the buttrap as "on board spare" About a decade later, and a few thousand rounds without issue, I sent the gun to my son, because he asked for it. Its now several years later, and no issues. in the early 70s I had a Remington 600 that got damaged due to an overload. Gunsmith fixed it, but it needed an extractor and none were available at the time, from Rem. Gunsmith made one. Worked fine until the gun was fired and then left the fired case in the chamber. Took about a month but the gunsmith got a Rem extractor and put it in. Rifle has been fine, ever since (I still have it). In the early 80s Wife got a Savage 110CL .30-06 (on the advice of a friend, only time she didn't listen to me about guns...) fired about half a box of shells and the extractor stopped working. Ordered one from Savage, took a month or so. I installed it and it worked. Gun was then sold, as the 06 was just too much gun for her. I've never seen a Mauser 98 extractor that was worn out, but I have seen some that were broken. IF you want to keep your bolt gun running until the barrel is shot out (and beyond) get a spare extractor, and a set of all the springs to have on hand, jut in case.
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April 14, 2020, 11:55 PM | #28 |
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I have worked on / replaced Mauser 98 extractors a few times. They were not broken, but just not holding onto the brass correctly. I don't own those guns, so I don't know whether they were worn by normal use, or their owners played gunsmith to improve something. Most of them just needed refitting, the rest needed replacement.
Refitting extractor is probably the 1st basic skill a smith should master. -TL Sent from my SM-N960U using Tapatalk |
April 15, 2020, 06:20 AM | #29 |
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I just bought a vanguard--which is essentially a Howa 1500 with a Weatherby barrel--and the bolt's extractor looks like a basic AR extractor. I haven't taken the bolt apart yet but disassembly looks pretty basic according to the owner's manual.
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April 16, 2020, 02:25 PM | #30 | |
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Board member Hummer70, from his days at Aberdeen, said there are steel "cases", sort of like a headspace GO gauge with a square and flat bottomed primer pocket that accepts calibrated soft copper slugs. A firing pin with enough energy and length should indent the copper to a minimum depth of, IIRC, 0.030". This is how one determines if there is enough energy in a firing pin blow.
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April 16, 2020, 02:31 PM | #31 |
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Intuitively I thought it might be the case--I just wasn't sure how much. This would seem to suggest corollary issues of primer cup consistency, primer type, thickness, height etc.
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April 16, 2020, 04:35 PM | #32 |
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IIRC (which most of the time I don't) that .03 about matches the pin protrusion from an AR bolt breech face.
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April 16, 2020, 04:41 PM | #33 | |
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I think the 0.03" was a large primer number for a 7.62, but I may be remembering the number incorrectly. I'll have to look.
Primer seating becomes a factor. How firmly you seat primers affects how solid the resistance to the firing pin blow is. You don't want to use up the pin's energy seating the primer deeper. This is from a declassified report: Quote:
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April 17, 2020, 05:18 AM | #34 | |
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I'm still hunting with some deer rifles of the 1930s and 40s, and never had triggers, safeties, firing pins, extractors or anything besides the barrel to wear and break. As matter of fact the only barrel wear problems I've had in hunting rifles were quite sever erosion-corrosion before they effected accuracy to the point that I had to replace them.
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April 17, 2020, 10:06 AM | #35 |
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in the past 50 years i've replaced several ejectors and firing pin springs.
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April 17, 2020, 01:19 PM | #36 |
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There are folks whose Winchester 70 actions still work 99% flawlessly after 2 to 3 thousand rounds per year across 40 years. New firing pin spring every year saves the remaining 1%.
Regarding Unclenick's good info ..... After measuring primers and pocket depths, it's easy to determine how deep primers need be seated below flush with case heads. Last edited by Bart B.; April 17, 2020 at 01:27 PM. |
April 17, 2020, 07:57 PM | #37 |
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Polinese
My shooting has good success with HSM 308 MATCH A Max 168,'s and Federal . Using store bought ammo , your rifle will give you many years of accurate shooting , Keep it clean. |
April 17, 2020, 08:17 PM | #38 |
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Whereabouts in long island are ya? I'm in the city these days.
Yeah I usually use the American Eagle 7.62 168gr. Great cost vs performance for me. Mostly shot it out of my Model 70, and less out of my Howa. But I've been looking at picking up another Howa. |
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