Bolt swap
- Thread starter TAJ45
- Start date
722 bolts are not machined for the "anti-bind" slot and the handle is straight.
TAJ45
Silver $$ Contributor
OK, got that logged mentally, Eddie.
Not having a 722 in hand to compare to the 700, would this be a simple mill set up then a "polish and blend" hand op afterwards?
Is the handle difference simply relieving an area of the stock for clearance, notwithstanding the aesthetics? (I'm a function over form type of guy)
Not having a 722 in hand to compare to the 700, would this be a simple mill set up then a "polish and blend" hand op afterwards?
Is the handle difference simply relieving an area of the stock for clearance, notwithstanding the aesthetics? (I'm a function over form type of guy)
butchlambert
Site $$ Sponsor
From a Canadian buddy.Machining an anti bind slot on a Remington.
https://www.flickr.com/photos/134395843@N08/30291437340/
posted Oct 26, 9:39 PM Hide Post
About 20 years back I was operating as a proof house here in Canada for Remington Arms and for a time it was almost impossible to get the new style 700 bolts with the anti bind cut in them. The parts distributor for international sales in Ilion fed us all a line that any bolts that were being made were going into production and nothing was left over for parts distribution. He was probably telling the truth but deep down I suspected that they were trying to get rid of the cases and cases of old style bolts that they had stacked up at the plant. Every time I ordered a new batch of bolts I would make some half hearted accusations and threats which of course were greeted with loud laughter followed with a: "you're just lucky I have old style bolts on hand that I can give you right now!" At any rate, with the help of the guys in the Remington repair shop, we quickly learned how to convert them. To this day I still run into the occasional instance where I have to cut the anti bind lug in an old style bolt to make it fit a new style receiver. It's actually very simple to do. The cut is made with a 1/16th woodruff cutter. The bolt is held in the mill vise with a V block and the bolt lugs are cocked to exactly 25 degrees using a V block on the lugs and a protractor or electronic protractor. The slot is 1/16th of an inch in width and .047 inch in depth. The lip under the slot measures 1/16th of an inch. My own personal way of locating the slot is to set the lugs at 25 degrees and then set the woodruff on top of the high lug and zero one of the Z axis. The quill is then lowered or table raised .354 inch. The cutter is then touched up to the side of the lug and then driven in.047 inch and the cut is climb milled across the length of the lug. Once in a while the top edge of the slot has to be broken a bit with a needle file to compensate for the rounded corner made by the broach while cutting the raceway. Also a slight lead may have to be made at the front or the back of the slot so that it can engage the guide without a lot of jiggling, fiddling and aligning. Most of the time it's just cut, wire wheel and toss it in the gun.
https://www.flickr.com/photos/134395843@N08/30291437340/
posted Oct 26, 9:39 PM Hide PostAbout 20 years back I was operating as a proof house here in Canada for Remington Arms and for a time it was almost impossible to get the new style 700 bolts with the anti bind cut in them. The parts distributor for international sales in Ilion fed us all a line that any bolts that were being made were going into production and nothing was left over for parts distribution. He was probably telling the truth but deep down I suspected that they were trying to get rid of the cases and cases of old style bolts that they had stacked up at the plant. Every time I ordered a new batch of bolts I would make some half hearted accusations and threats which of course were greeted with loud laughter followed with a: "you're just lucky I have old style bolts on hand that I can give you right now!" At any rate, with the help of the guys in the Remington repair shop, we quickly learned how to convert them. To this day I still run into the occasional instance where I have to cut the anti bind lug in an old style bolt to make it fit a new style receiver. It's actually very simple to do. The cut is made with a 1/16th woodruff cutter. The bolt is held in the mill vise with a V block and the bolt lugs are cocked to exactly 25 degrees using a V block on the lugs and a protractor or electronic protractor. The slot is 1/16th of an inch in width and .047 inch in depth. The lip under the slot measures 1/16th of an inch. My own personal way of locating the slot is to set the lugs at 25 degrees and then set the woodruff on top of the high lug and zero one of the Z axis. The quill is then lowered or table raised .354 inch. The cutter is then touched up to the side of the lug and then driven in.047 inch and the cut is climb milled across the length of the lug. Once in a while the top edge of the slot has to be broken a bit with a needle file to compensate for the rounded corner made by the broach while cutting the raceway. Also a slight lead may have to be made at the front or the back of the slot so that it can engage the guide without a lot of jiggling, fiddling and aligning. Most of the time it's just cut, wire wheel and toss it in the gun.
TAJ45
Silver $$ Contributor
From a Canadian buddy.Machining an anti bind slot on a Remington.
https://www.flickr.com/photos/134395843@N08/30291437340/
About 20 years back I was operating as a proof house here in Canada for Remington Arms and for a time it was almost impossible to get the new style 700 bolts with the anti bind cut in them. The parts distributor for international sales in Ilion fed us all a line that any bolts that were being made were going into production and nothing was left over for parts distribution. He was probably telling the truth but deep down I suspected that they were trying to get rid of the cases and cases of old style bolts that they had stacked up at the plant. Every time I ordered a new batch of bolts I would make some half hearted accusations and threats which of course were greeted with loud laughter followed with a: "you're just lucky I have old style bolts on hand that I can give you right now!" At any rate, with the help of the guys in the Remington repair shop, we quickly learned how to convert them. To this day I still run into the occasional instance where I have to cut the anti bind lug in an old style bolt to make it fit a new style receiver. It's actually very simple to do. The cut is made with a 1/16th woodruff cutter. The bolt is held in the mill vise with a V block and the bolt lugs are cocked to exactly 25 degrees using a V block on the lugs and a protractor or electronic protractor. The slot is 1/16th of an inch in width and .047 inch in depth. The lip under the slot measures 1/16th of an inch. My own personal way of locating the slot is to set the lugs at 25 degrees and then set the woodruff on top of the high lug and zero one of the Z axis. The quill is then lowered or table raised .354 inch. The cutter is then touched up to the side of the lug and then driven in.047 inch and the cut is climb milled across the length of the lug. Once in a while the top edge of the slot has to be broken a bit with a needle file to compensate for the rounded corner made by the broach while cutting the raceway. Also a slight lead may have to be made at the front or the back of the slot so that it can engage the guide without a lot of jiggling, fiddling and aligning. Most of the time it's just cut, wire wheel and toss it in the gun.
Very good and thank you. No dividing head needed, eh? piece of cake.
Dans40X
Welder
OP,
40X,721/722/725/4/5/6 digit serial numbered receiver bolt lug does not have the anti bind slot cut.
The above mentioned bolt HANDLE's are of the short straight round knob configuration.
XP-100/600/660 do not have anti bind slot cuts & HANDLE's are of DOG LEG configuration.
7 digit('73 ish) 700 bolt lug is the start of the anti bind slot cut.
A,B,C,D,E,G,RR prefix serial numbered bolt lug has the anti bind slot cut.
"D' pre fix to current production RR receiver bolts do not have the bolt lock safety cut in the bolt body....either.
The above mentioned bolt HANDLE's are of the swept configuration.
Current production 700,40X,40XR,Seven,XR-100,673 bolts have anti bind slot cut for center fire configuration w/ swept handles.
40X,721/722/725/4/5/6 digit serial numbered receiver bolt lug does not have the anti bind slot cut.
The above mentioned bolt HANDLE's are of the short straight round knob configuration.
XP-100/600/660 do not have anti bind slot cuts & HANDLE's are of DOG LEG configuration.
7 digit('73 ish) 700 bolt lug is the start of the anti bind slot cut.
A,B,C,D,E,G,RR prefix serial numbered bolt lug has the anti bind slot cut.
"D' pre fix to current production RR receiver bolts do not have the bolt lock safety cut in the bolt body....either.
The above mentioned bolt HANDLE's are of the swept configuration.
Current production 700,40X,40XR,Seven,XR-100,673 bolts have anti bind slot cut for center fire configuration w/ swept handles.
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