Tuning FX Crown modification

[aldea6]

I , did anybody try to put 2 or more grub screws on each side of the breech ( FX Crown 1st generation ) to get a better grip of the barrel assembly , like the FX Continuum ? It seems more mechanicaly sound than 2 scews on the top of the barrel only , to keep the barrel , and the POI moving sideways.

Thanks

 

[Long_Gun_Dallas]

Honestly, I think you'd have more alignment issues with screws on the sides. 

 

[Ex.Magnum]

Honestly, I think you'd have more alignment issues with screws on the sides.

Now i m curious Dallas... 

Are you referring to a standard Continuum breech "having more alignment issues"...

Or are you saying that custom interference adding screws on both sides of a common 1st gen. Crown breech, equals looking for trouble...



Have a nice weekend.

 

[Long_Gun_Dallas]

The latter. Thought there is a bit of truth to the former. Think about it.... You'd have force being applied from 3 directions. On my continuum, I can get poi to shift depending on the tightening order and amount of tq I use. Now, the older version just gets pinned from one direction in the bore. Always the same direction. No variating force applied from left or right. I've owned both, and the older has better repeatable poi than the new 4 screw receivers.

Main benefit of the 4 screw design is you don't have to remove the scope. 

 

[gendoc]

thats interesting......

when i install a barrel on my mk2, i count the threads and torque evenly.

i dont experience any poi shift even when shooting out to and over 100yrds

on calm days from the bench.

 

[Long_Gun_Dallas]

Yep, if you can do that. I don't have a tq wrench accurate enough, most people don't, and wouldn't think to do that either. But it stands to reason that would work.

Now if we can just figure out how to get all the barrels to have the same poi lol

 

[aldea6]

Ok guys , from your answers I think it's not worthwhile to add screws on the sides . The two upper screws don't need to be torqued more than the force applied with the finger tip to a 6" long allen wrench, as I noticed on a video about this subject.

I'll keep my Crown as from factory

Thanks

 

[ChRiSiS]

thats interesting......

when i install a barrel on my mk2, i count the threads and torque evenly.

i dont experience any poi shift even when shooting out to and over 100yrds

on calm days from the bench.

Yep, if you can do that. I don't have a tq wrench accurate enough, most people don't, and wouldn't think to do that either. But it stands to reason that would work.

Now if we can just figure out how to get all the barrels to have the same poi lol

I don’t count threads, but I do torque evenly on all four screws. I also do it gradually, alternating side a little at a time until i get to the chosen torque. That way i really don’t get major POI shifts.

 

[Corvid_hunter]

What torque amount do you use on the screws?

 

[gendoc]

A fraction of an inch pound......a good snug.

 

[Ex.Magnum]

when i install a barrel on my mk2, i count the threads and torque evenly.

i dont experience any poi shift even when shooting out to and over 100yrds

I don’t count threads, but I do torque evenly on all four screws. I also do it gradually, alternating side a little at a time until i get to the chosen torque. That way i really don’t get major POI shifts.

Indeed. Same approach here on MkII. Minimal torque. Crosswise applied.

No poi shift ever experienced. When reinstalling the same barrel of course. When switching to another caliber there s always poi shift to be expected

.

 

[Long_Gun_Dallas]

Huh. I can get very close to no poi shift if I am careful to do my best to apply even torque, but I think I've always had some. Wonder if the mkii is impoved over the mk1 continuum somehow

 

[Ex.Magnum]

Wonder if the mkii is impoved over the mk1 continuum somehow

That s a good question indeed. Never thought about it before. Just assumed dat MkI Continuum barrel lock was one on on copied for MkII.

Anybody who knows ? 



broekzwans perhaps ?

 

[ChRiSiS]

I have had a Crown MK1, a Crown Continuum (Mk1) and now have two Crown MK2s. As far as I can tell the Continuum Mk1 block is the same as the Crown Mk2 block, as least as far as the barrel attachment goes. I didn’t get material POI shifts with the Continuum, nor with my two MK2 Crowns. As I described above, I’m pretty careful in how I put the barrels back in when ever I changed them. I don’t have a specific torque setting, I just make sure that the torque is the same on all 4 screws. To be honest, I didn’t have my gen. 1 (non Continuum) MK1 very long, and never pulled the barrel except to change calibers, so I can’t say if it was, or would have been, that much worse than the MK2.

Chris

 

[Ex.Magnum]

I have had a Crown MK1, a Crown Continuum (Mk1) and now have two Crown MK2s. As far as I can tell the Continuum Mk1 block is the same as the Crown Mk2 block, as least as far as the barrel attachment goes.

That was also my impression. 
Thx for your response Chris.