| Posted: Tue Aug 11th, 2009 05:35 AM |
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1st Post |
chr18426
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| Joined: | Wed Feb 22nd, 2006 |
| Location: | Texas USA |
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I rebarreled a M 700 with a factory heavy barrel for a varmin shoot. The only gage available at the time was the No Go gage and the bolt closed with no problem. I went on the shoot, had a great time, and shot a bunch of prairie poodles. The problem happened after several hundred rounds and a bolt that would not open.
I discovered that my rifle was blowing out the primer pockets and tiny discs of metal were falling under my rifle. I now have the Go Gage and, the bolt closes just fine.
Seems to me that the shoulder on the new barrel needs to be trimmed. Am I correct in this assumption? Please help.
CHR
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| Posted: Tue Aug 11th, 2009 11:59 AM |
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2nd Post |
Rockydog
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| Joined: | Tue Jul 26th, 2005 |
| Location: | Wisconsin USA |
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Factory ammo or reloads? If it's factory ammo you've got a rifle problem. If it's reloads you've got a case sizing problem and your die is set too low, pushing the shoulders too far back. Even if it's a rifle problem if you reload there is a temporary fix. Just run your cases up into a 243 or any 6mm sizing die far enough to expand the necks to 243. Then back out your .223 sizing die about 5 turns and size a case. If it fits in your .223 back it out until it doesn't fit. Then turn it back in a few thousands at a time until you get a "crush" fit in your rifle. You should just feel a little drag as you close the bolt. Lock your die settings and form and load all of your cases. When you shoot them you'll fireform all cases to your gun. (However, they are not likely to work in another gun unless you short sized them in the first place.) You've just built custom ammo for your long chambered rifle. That's why we reload. From here out only neck size these cases until you can't close the bolt again. At that point you'll have to FL size again but do so very cautiously to avoid setting the shoulder back. RD
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| Posted: Tue Aug 11th, 2009 12:14 PM |
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RemMan700
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This might be your problem.
"The only gage available at the time was the No Go gage and the bolt closed with no problem."
The gun should not close on a No Go gauge. You have excessive headspace if it does.
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| Posted: Tue Aug 11th, 2009 01:38 PM |
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4th Post |
bea175
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| Joined: | Sun Feb 13th, 2005 |
| Location: | Kingsport & Graysontown, VA, Tennessee USA |
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If the bolt closed on the no-go gauge then it is most likely excessive head-space causing your problem. Two ways to correct this problem. One you can pull the barrel and re-cut the tenon which will remove one or two threads and get your correct head-space or you can purchase a Holland or Tubbs recoil lug and have a smith measure and surface grind the lug to the exact diameter to correct the head-space problem. Either way you will need a gunsmiths help if you don't have the equipment to do it yourself.
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