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Joined: Jul 2001
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Campfire Kahuna
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Originally Posted by Al_Nyhus
In my .17 Rem. LVSF, it made a significant difference in accuracy.

The JLocks here get replaced with standard weight 700 f-pin and shroud assys. A snaked up f-pin spring that the pin drags through on it's travel (both ways) is not what you want happening inside your bolt. Add in the cheesy JLock and there you have it. smile

Good shootin' -Al

Al,

The only J-lock 700 I still have is a laminated-stock varmint model in .223 Remington purchased new in 2001, with a 26" heavy barrel. Have written about this one considerably before, but when new, after some light "accurizing" (bedding but no pillars, clean up crown, etc.) it would consistently put five shots both 50-grain Berger Hollow-Points and Nosler Ballistic Tips in .25" at 100 yards. Of course, now it's had several thousand rounds down the barrel, mostly at prairie dogs, but "renewed" the throat a while back with bore-lapping bullets, and it will still put just about any decent factory ammo into a half-inch or less, for 5 shots at 100. Handloads are more like .35 now.

Can't remember if I tried it with a "regular" bolt shroud, but might have. But it never showed any of the indications of a dragging firing pin, so might have just gotten lucky.

John


“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Sep 2009
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Campfire Regular
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I have 2 J-lock Rem 700's, a .300 Win Mag and a 7mm08. Both are quite accurate hunting rifles and I've never had any issues with them. I'm not fond of the J-lock but it doesn't seem to affect accuracy on my rifles. However, I'm about to install Gre-Tan firing pin assemblies with a regular bolt shroud in both of them so we'll see if it makes any difference. My concern with the J-lock is that it could inadvertently lock up your bolt when you don't want that to happen.

Joined: Jan 2009
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Originally Posted by Jim_Conrad
Nationally known gun writer here.....and I have several accurate j lock rifles.

I don't have one but a j lock 223 heavy barrel laminate rifle is supposedly one of the most accurate they ever produced.

First time Google drew a blank?????

Joined: Mar 2003
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Campfire Regular
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Had one of the Heavy varmit laminated .223's and a Laminated mountain rifle in .260 with j-locks. They both shot very well, the .223 especially, just like Mule Deer's. Changed out the springs and bolt shrouds on both, still shot the same. On the other hand I do know of a few that didn't shoot well until the wiggly jammed up firing spring was changed. Some of those springs were really bound up, some weren't so bad. Luck of the draw.

Joined: Dec 2008
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Campfire Oracle
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I had a .17 Rem in an LVSF with a J-lock.....it didnt stay on long.....

( also a Nationally known Gun Writer like Jim Conrad...)


"...the left considers you vermin, and they'll kill you given the chance..." Bristoe
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Joined: May 2016
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Campfire Tracker
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Originally Posted by blanket
They can shoot, have replaced the ones with no lock assemblies just on principle

Same here, way too ugly to leave on a rifle, yuck! ( :))

Joined: May 2014
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Campfire Outfitter
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I just bought a 700 here on the Fire and I'm tempted to replace. I suppose I'll take it to the range first. It's not accuracy that bugs me, but 1. lock time affected? and 2. looks

Pacific Tool and Gauge:
Remington 700 Firing Pin Assembly w/ Aluminum Shroud - Lawton Style

SKU : 2db80d4f
Choose Firing Pin Tip Size : Standard FP Tip - .075, Choose Shroud Color : Black Anodize, Choose Action : Long Action, Choose Firing Pin Material : Steel
Manufactured to Order
$62.95
1
$62.95
Total shipping $9.70
TOTAL
$72.65


I prefer classic.
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I used to run with the hare. Now I'm envious of the tortoise and I do my own stunts but rarely intentionally
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