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| That is the most compelling reason I've seen to change one yet.
Any idea as to why the change made such a difference? |
| | | Posts: 9920 | Location: Carolinas, USA | Registered: 22 April 2001 | 
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| Whatever it is, you can bet that it had nothing to do with the lack of the J-Lock and everything to do with the custom bolt assembly. |
| | | Posts: 852 | Location: Austin | Registered: 24 October 2003 |
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| Kenney Jarrett did a article about the J-locks when they first came out and said they showed very inconsistant lock times. I believe he associated it with the locking mechanisim dragging on the firing pin differently each time. He changed all the J-locks out on the rifle he built. In my opinion it would be interesting to see how well the J-lock setup would perform if just the lock was removed. |
| | | Posts: 179 | Location: Boise, ID | Registered: 16 February 2004 |
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| the way the spring is bunched up around the striker with the J-lock is my gusse.
the main reason i changed them is i had a hingfire with the VSSF. when i disambled it's bolt the spring was binding inside the bolt. looking at it after i got it out reminded me of 5lb of crap in a 2lb sack. |
| | | Posts: 169 | Location: Never where you think | Registered: 03 February 2004 |
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| Today, I performed my own test. I swapped firing pin assemblies between my 700 ADL and my 40X. Shot groups out of both rifles before and agter the changeout. I showed no appreciable difference in groups in either rifle. Essentially, both shot the same with and without the J-Lock firing pin assembly. In your case, the change in group size may have had more to do with the custom firing pin assembly itself rather than the bunched up spring in the J-lock bolt. Just my opinion. |
| | | Posts: 232 | Location: Alamogordo, NM | Registered: 19 March 2003 |
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| I built my 1000yd light gun on a j-lock action. The gunsmith took and "stoned" my j-lock and firing pin recess to eliminate the drag and resulting inconsistent lock-times. The gun goes .25moa at 100yds,...and still has the factory j-lock,..although altered by the smith. |
| | | Posts: 1496 | Location: behind the crosshairs | Registered: 01 August 2002 |
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| Quote:
...I swapped firing pin assemblies between my 700 ADL and my 40X. ...Essentially, both shot the same with and without the J-Lock firing pin assembly. ....
Hey jesilva, Thanks for that input. Looks like it may be "specific to a rifle" instead of across the board as I first thought.
I've always taken the bolt apart on a new rifle, cleaned it, checked for binding, polished it a bit if needed, lightly greased it and put it back together. Doesn't matter who made it either. I may have eliminated some "binding"(leading to inconsistent lock-time) without giving it much thought at the time.
Anyway, even though this isn't my thread, I sure appreciate all the input each poster has provided.
Thanks and good shooting to each of you. |
| | | Posts: 9920 | Location: Carolinas, USA | Registered: 22 April 2001 |
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| takeing your cue i swapped the fireing pin aseembly from my 40x into the VSSF and got groups of .650, .610, .685 5 shot @100. better than factory but not as good as the Holland. switching back to the Holland got me .500 .520 .500
so then i put the Holland into the 40x [6br hart barrel shoots ags in the 2s best of .205 @100 best of .315 @200] and it shot a .175 .180 .175 @100 and .225 .225 .230 @200. rifle has never shot this good.
so it would seem the Holland parts are the main reason for the improvement. spending $40 for the Holland assembly is a best buy as far as i'm concerned.
hell i've spent over $500 rebarreling rifles and not had this kind of improvement! |
| | | Posts: 169 | Location: Never where you think | Registered: 03 February 2004 |
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