The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Gunsmithing M70 Feeding question?Go | New | Find | Notify | Tools | Reply | |
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| One of Us |
I picked up a like new Win 70 Stainless Synthetic in 7mm WSM last week for a song ($380). Slapped a scope on it and took it to the farm last week and drilled 10 shots of Federal factory ammo into a group of about 1.25 inches. Nice round consistent group that bodes well for the rifle with some trigger work and perhaps a better handle (considering a Brown Precision). It feeds a tad rough. Its reliable...don't get me wrong there. But just about the time the cartridge begins to straighten out in relation to the chamber it feels like there's a hump or something. Its just the last 3/4" or so of bolt movement. I'm thinking the extractor has some dimensional problems. My 300 WSM doesn't have this feel to it. Its feeds both reliably and slick. Any ideas of what to look for? | ||
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| One of Us |
You need to isolate the problem a little closer than that. One thing to look for is if the problem occurs when feeding a round from one particular sided of the magazine, or, does it occur regardless which side the round feeds from? This is probably going to be one of those things that can only be solved by watching every movement and comparing it to your 300. Don't forget to remove the firing pin first! | |||
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| One of Us |
George, Thanks for the reply. It happens regardless of which side the round feeds from. It happens long after the feed rails have released the round and a good bit after its been caught by the extractor. It really looks/feels like the extra force is required when the rim of the cartridge begins to push up and fully seat in the extractor. The reistance begins after the cartraide is a good way into the chamber. The bolt face has about 3/8" travel left before it clears the forward edge of the receiver loading port (the the rear edge of the forward receiver ring--take your pick). Edited to add...after playing with it some more I noticed that ammo from the left side of the magazine does NOT encounter the additional resistance felt from ammo feeding from the right side. I also observed that ammo feeding from the left side rides higher on the bolt face during initial pick up than ammo fro the right side. So I'm pretty sure the resistance I'm encountering is the extra oomph required to push the angled round under the extractor? Thoughts? | |||
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| One of Us |
The G stands for Guy. Not that there is anything wrong with the name George.  Pull the bolt and look at the face of the bolt and extractor. The bottom edge of the extractor sometimes protrudes too far into the bolts face causing the extractor to have to move further out as the apex of the cartridge slides up past this part of the extractor. Place the cartridge under the extractor and slide it up into place. You should be able to see and feel the resistance as the mid section of the cartridge pushes past the lower edge. Compare the shape of the extractor's face to that of the 300 WSM and see if there is any difference. This is probably where I would look first, based on what you have said. Reducing the inward curve at the bottom of the extractor will usually solve several feeding problems. When reducing the lower curve, go slow and check to make sure that the extractor still maintains a good hold on the case. | |||
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