I’ve been looking into a JJ Rock 50 BMG action but I can no longer find their website. I had heard they weren’t taking new orders until they get caught up but I’m curious if anyone knew anything
- Thread starter ReturnFire
- Start date
I was wondering as well. Website been down for awhile.
Go pierce engerneering better product any way
They don't do integrated rail or recoil lug...I want all one piece.
Yes they do just ask them. And the jj rock has a tennon sleeve that has been known to have issues i personaly hate fixed barrel recoil lugs and rails cause you cant change them if you want to . The pierce rail has pins and heavy duty screws they dont come loose ever and they make the new 50x repeater bmg action
Does that big Pierce have an XP cut on the underside? Or, are my eyes playing tricks on me? It may just be a repeater but if you have any other photos I’d love to see them.
Looks like one hell of an action!! In talking with a gunsmith I know who rebarreled ELR rifle in 375CT with a JJ Rock action and it showed more signs of wear on the bolt lugs then he would like to see after about 900 rounds.
What is xp ? it is designed as a bmg repeater are you talking about xp recoil lug . What you are seeing is notch that a recoil lug gets installed into as a option or you can use a remington style . It is produced as round or multiflat depending on chassis type the action in photo is a type of xp designed for the cadex action bolt is one piece and it uses a bat style extractor
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Its related to the sleeve in the tennon being adjusted wrong from the factory the sleeve has the locking lugs made into it
Ok thanks good to know.
This type of sleeve design is not a bad design. It was used by the Klein Gunther German vornbach it just has to be permanently fixed where it cannot move change or be adjusted or come loose and of course the original setup has to be done by a competent person and it must be timed and manufactured properly
Their 07 FFL expired a few days ago and hasn't been renewed.
The only other photos i have is in design fase and solid works and a few in the raw bolt in production as you can see in the photo serl # 1 as this is the prototype soon more photos from all angels well be available and i will plaster every thing in a new post
What are the differences between the 50X and the 20X?
20x single shot 10" long was designed specficly for the ex- nihilo based cartridges its 2" in diam. Designed specficly for elr no ejectors the 50 ix is 1.960 in diamiter 12" long and is a repeater with ejectors and designed for available chassis platforms that why the difference in diamiter. Both have the same diamiter bolts and lug desplacement. Tennon is the same size but i believe its a little longer on the 20x and obviously the bolt is longer on the 50x. The 20x has 3 stock bolts to mount to stock or chassis the 50x has 2. Both the 50x and 20 x can be custom ordered slight differences In barrel lug design and bottom conture ranging from round to multiflat .
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Any idea when they will be available? I’m assuming it will fit in a Cadex Dual Strike?
As you can see in the photo its in a cadex chassis he will take orders now call jim at pierce engerneering
Will the 50x work for cartridges like the 416 hellfire or vestal or only bmg bolt face
Currently only with the bmg
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