Author Topic: POI /swapping barrels  (Read 561 times)

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Offline kudzu

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POI /swapping barrels
« on: September 01, 2006, 02:52:11 PM »
This is my first go around with the encore/pro hunter. Is there a POI change when changing barrels back and forth ?

And just food for thought. Would it be an improvment to the encore/pro hunter to loose the hammer and go to a tang type safty/trigger setup.
Have a Mossberg SSI One, and thats one feature I really like about it.

thanks,DM

Offline Davemuzz

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Re: POI /swapping barrels
« Reply #1 on: September 02, 2006, 03:22:01 AM »
Dancoman,

No POI change. Thats the nice feature of the T\C's. Swap 'em all day long. They go right back to where you left 'em off. (Unless your droppin 'em on concrete in between or sumpin).

I personallly like the hammer setup. There is never a concern of is my saftey on or off? Just look at the hammer.

My $.02

Dave

Offline Guns4570

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Re: POI /swapping barrels
« Reply #2 on: September 02, 2006, 10:34:39 AM »
With a scope mounted to the barrel and centerd to the bore of the barrel, aka, sighted in, there is no way I repeat no way that by switching the barrels back and forth the POI can change due to the barrel being removed and put back on the frame.  The scope is sighted into that barrel, not the frame.  The only possible change would be in where the firing pin hits the primer and thats not enough to move POI any discernilbe amount for a hunting rifle.  If you were shootin 1000 yard F-class competitions it might change ingnition and change the bullet's path due to the charge not expanding in the same manner each time.  But we're talking rifles that will shoot sub MOA at a thousand yards each and every round too.  They shoot into the 1's and 2's for groups at hundred yards or sub .25" inch groups.  In point of fact...I have seen H&R bull barreled .223's shoot into .5" groups regularly so its more the bullet to barrel match, and the person behind the trigger in my mind.

Offline coopershooter

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Re: POI /swapping barrels
« Reply #3 on: September 03, 2006, 11:10:03 AM »
i think the biggest change when swapping barrels is the how the forarm screws are torked. just as you can alter the poi on a bolt gun with diffrent screw tension?!

Offline Davemuzz

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Re: POI /swapping barrels
« Reply #4 on: September 03, 2006, 01:45:21 PM »
Coop,

I think if you have the forarm properly "floated", then the only two points (other than the breach and lock up) would be the screws and the washers or whatever type of material you used to hold the forarm away from the barrel.

So, I think any tension difference would be minimal and have no practical effect on shots out to 400 yards.

IMHO

Dave

Offline hyltoto

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Re: POI /swapping barrels
« Reply #5 on: September 06, 2006, 08:11:27 AM »
It really isn't the swapping barrels that changes the impact, it is the removal and re-installation of the forearm screws. Use a torque wrench to install and reinstall to the same value and in the same order.

Offline coopershooter

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Re: POI /swapping barrels
« Reply #6 on: September 06, 2006, 01:01:02 PM »
hyltoto, your right on the money!
 if it was a deer cartrige, like my 30-30 i wouldn't worry about it at all! but if i wanted to shoot crows at 300 or 400 yards with my .204 ruger, it will be a diffrent story. i have never used a torque wrench, but that sounds like a great idea. i just try to tighten the forarm the same each time. and from the shift in point of impact, my method doesn't work!  i get as much as an inch in any direction while changing barrels. it seems to be pretty random. i bet if i tried the torque wrench i could at least cut that in half.
 even still, it's a great system! and one of my favorite rifles!
 good luck.