tj3006
.375 Atomic
Posts: 1,965
|
Post by tj3006 on Nov 18, 2019 22:47:00 GMT -5
Its been a favorite of mine for years ! The rifle I am Referring to here is a Remington 722 , a previous owner cut at 21 inches , and refinished the stock, so i got it pretty cheap. It shoots Very well, but i am getting extraction and ejection issues. I have so far been able to work around them, Buy using fresh brass and backing slightly off on my loads. I polished the chamber up and keep it clean to reduce the friction , when extracting. If i use brass that has been fired in other rifles, or been reloaded several times they stick about half the time. I have a call into Darryl Holland who will get back to me when he gets back from hunting. I am thinking i might Bite the Bullet and buy some nosler and or hornady brass, and save those for hunting, I shot the thing yesterday with 100 grain Ballistic tips partitions and triple shocks. I used H 414 and IMR 4350 The partitions were decent 1.5 inch 3 shot groups with the 4350, but awful with the 414. The Ballistic tips were a bit better with 4350, But the Barnes Gave me 3 shot groups well under 3/4 inch, with the 414.. I have many weeks till deer season, but i would love to take this old rifle to eastern Oregon, I bet the 414 load is around 3000 fps, I will chrony it soon. Anybody have any ideas on a cure for my extraction issues ? Thanks ...tj3006
|
|
nicholst55
.375 Atomic
Retired, twice.
Posts: 1,038
|
Post by nicholst55 on Nov 18, 2019 23:52:02 GMT -5
Does anyone offer a Small Base sizing die for the Bob? You may have a chamber on the minimum spec side of things.
|
|
|
Post by potatojudge on Nov 19, 2019 0:13:19 GMT -5
I'm no rifle smith, but I think sometimes polished chambers can grip brass more than textured ones. I'd check factory ammo or new brass for chambering and go from there. If those do okay see if you can try a different sizing die, as they all run a little different and you might need one that sizes a bit more as nicholst mentioned.
I enjoy the Roberts also. I load for dad's' No 1 in 257 and my own tang safety M77. Both great guns, if a bit on the heavy side. We're deer hunters and have had good luck with the round, except one wounded hog that got away (we found hair, flesh, and chunks of bone, but never any pig).
I use either 4350 or one of the Reloader powders.
|
|
|
Post by nolongcolt on Nov 19, 2019 0:39:15 GMT -5
When you say extraction issues,, are you having sticky or hard bolt lift? Flat or cratered primers? Or after full bolt lift, having trouble pulling the empty out of the chamber? Are your rounds snug or hard on closing the bolt? Most times these problems are too hot a load or a tight chamber. What is the ejection problem?
|
|
tj3006
.375 Atomic
Posts: 1,965
|
Post by tj3006 on Nov 20, 2019 0:11:11 GMT -5
The spent case stays in the chamber when i work the bolt, most of the time if i cycle it a second time it comes right out !
|
|
|
Post by nolongcolt on Nov 20, 2019 0:20:40 GMT -5
But no sticky or hard bolt lift? Sounds like a bum extractor.
|
|
tj3006
.375 Atomic
Posts: 1,965
|
Post by tj3006 on Nov 20, 2019 23:57:02 GMT -5
Bum extractor is what i am thinking too. But it works better with fresh cases. I think the old ones are soft and after firing expand to the point my extractor cant pull it out.
|
|
|
Post by potatojudge on Nov 21, 2019 0:16:42 GMT -5
I agree, check/replace the extractor. Last night's reloads for the Roberts. I have a stack of unused Western WW brass and pulled some for these rounds. 115 grain Nosler Ballistic Tip loaded just off the lands. One nice thing about a long action rifle feeding a Mauser length case is you can fit just about anything you want in the magazine without deep seating. Not sure the 115 has any advantage over the 100 grain bullets, but they're all moving fast enough to get the job done and I tend toward heavies. If the rain holds off Friday I might take these out after some deer.
|
|
|
Post by squawberryman on Nov 21, 2019 5:47:44 GMT -5
Shiny ammo, Lee would approve. Nice
|
|
|
Post by eagle1899 on Nov 21, 2019 8:36:28 GMT -5
The 722/721 have a at best a marginal extractor. Time has done them no favors.
They are no longer available and a rivet 700 extractor is not an option.
I have a 721 that will be going under the knife for a M16 style extractor and other enhancements as soon as my life settles down a bit.
I would avoid a Sako style extractor on any two lug action not designed for it.
|
|
|
Post by nolongcolt on Nov 21, 2019 18:10:44 GMT -5
I used that 115 BT in a .257 some years ago on a MT lope, longish shot, took it right down. Was using a Remington 700 Classic, good shooter. My current .257 is a Ruger No.1 SS and walnut, limited run. Its an excellent shooter and loves SGK 117's.
|
|
|
Post by bradshaw on Nov 22, 2019 7:38:18 GMT -5
Its been a favorite of mine for years ! The rifle I am Referring to here is a Remington 722 , a previous owner cut at 21 inches , and refinished the stock, so i got it pretty cheap. It shoots Very well, but i am getting extraction and ejection issues. I have so far been able to work around them, Buy using fresh brass and backing slightly off on my loads. I polished the chamber up and keep it clean to reduce the friction , when extracting. If i use brass that has been fired in other rifles, or been reloaded several times they stick about half the time. I have a call into Darryl Holland who will get back to me when he gets back from hunting. I am thinking i might Bite the Bullet and buy some nosler and or hornady brass, and save those for hunting, I shot the thing yesterday with 100 grain Ballistic tips partitions and triple shocks. I used H 414 and IMR 4350 The partitions were decent 1.5 inch 3 shot groups with the 4350, but awful with the 414. The Ballistic tips were a bit better with 4350, But the Barnes Gave me 3 shot groups well under 3/4 inch, with the 414.. I have many weeks till deer season, but i would love to take this old rifle to eastern Oregon, I bet the 414 load is around 3000 fps, I will chrony it soon. Anybody have any ideas on a cure for my extraction issues ? Thanks ...tj3006 ***** We’ve said it before, we’ll say it again: a clear answer depends on a clear, precise description of problem. Info presented* Rem M-722. * Barrel (factory or aftermarket?), chambered in .257 Roberts. Cut to 21” by previous owner. Accurate. Chamber polished by present owner. * Sticky extraction----with "brass fired in other rifles." Or, "brass reloaded several ties.” * “Ejection issues”----unspecified. Best to start with fresh brass. Some guns & chambers cycle fired in other rifles----when brass reloaded in excellent dies (which compliment the chamber,) correctly adjusted, AND reloaded in a STURDY PRESS. A loose C-type press, or one with poor alignment, may tilt case head. Good brass which sticks after several reloads may be loaded too hot. If you want a .25-06 or .257 Weatherby, get one. ExtractorThe Remington extractor rotates with bolt. A shell in the chamber does not rotate. The sharp, fiongernail-type Remington extractor may cut into the rim as the BOLT CAMS OPEN. Rocks & Dynamite loads or soft brass, in conjunction with a rough chamber, cause brass to grab. As nolongcolt suggests, rifle may have a bad extractor. EjectorButton ejector. If the spring has been cut, or a chip of brass wedges the button flush with the bolt face, shell will not eject. David Bradshaw
|
|
tj3006
.375 Atomic
Posts: 1,965
|
Post by tj3006 on Nov 26, 2019 6:58:31 GMT -5
I don,t think my loads are hot, But not exactly cool either! Fitting an m 16 extractor ?sounds like a possibility ! New brass is something i need to do if i don,t want to change the extractor. All i can find is Hornady and nosler. I might Go for 6mm And neck it up. Bradshaw you are certainly a wealth of good info. Thanks for helping. ! ...tj3006
|
|
|
Post by wildcatter on Dec 4, 2019 16:35:01 GMT -5
I had a 722 in 257 and had the same problem with book loads. My problem was the chamber had rusted enough from setting for years in a safe with no attention to it, so I had it ackley improved, it helped but did not cure the problem and I rebarreled it to a new cartridge.
I later found another and had no problems at all. Matter of fact I found most reloading manuals (20 years ago), I haven't compared recent reloading manuals, but back then all loads were very anemic for such a fine cartridge in more modern rifles such as the 722 and including other quality rifles such as the 700, Winchester 70, Ruger 77 etc.
I was told by a couple ammo suppliers and reloading manual suppliers that the data is safe "for all rifles" but take into account the many old military actions that were altered allowing the cartridge to be born on as a wildcat, before being adopted as a commercial round! It was after that the modern rifles adopted the cartridge, If you are loading that data, you certainly are not loading to hot for the 722 action,,, but that means as built by Remington. I found the Roberts to be at its best, accuracy and trajectory wise, capable of much better than published in more modern quality rifles loaded to pressures closer to the 25/06, 244, 270, etc.
But when you say the barrel had been cut down it scares me, who is to say the chamber has not been polished out to address a problem such as I encountered. This would allow more area for the cartridge to expand, and make even lighter loads to expand the brass more before fitting the chamber and this alone can cause not only stiffer extraction, but can create a dangerous situation even with listed loads in any manual.
As David said, crud or material can get behind the brass extractor, and that alone can cause binding, it may be such a task as removing cleaning behind and replacing the factory extractor. But when any older, or any rifle has been altered, and we know nothing of it's history, or was doing the smithing, things can become very frustrating and the smallest detail can become the culprit.
As for a Sako extractor, I had an early bench gun built by Fred Sinclair on an XP-100 action, and went from a 223 to a 6mm Tall Dog, Fred installed the Sako extractor when the he opened the bolt face. That gun had a habit of blowing primers with it's most accurate loads and never had a problem. The larger than ideal firing pin hole was the issue when loaded to pressures most Bench Rest shooters load to. Later a modified firing pin cured that, but safety and extraction with the Sako extractor was always positive, even with pressures from loads I would not mention here.
|
|
tj3006
.375 Atomic
Posts: 1,965
|
Post by tj3006 on Dec 14, 2019 14:56:10 GMT -5
i sent it off to ger tan rifles for a sako extractor !
|
|