Lets see some PE90 Swiss Arms photos...

My rig....

swiss-arms_zps8fdc0a00.jpg
 
Here is a question For those of you that have been shooting their PE90 for a while.

Do the groups stay consistant after shooting a few mags or do you experience POI shift as the barrel heats up?
 
smak_daddy said:
The rifle is shot off a bi-pod 1% of the time. But, thanks for your input bud.
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I think he was talking about the fore grip as much as he was the bi-pod. It is quite a known fact in the service rifle area that if you use a fore grip on Swiss Arms rifle's the pressure as you touch and handle the fore grip will cause the POI to wander all over the place. I've never experienced this because I don't shoot my Swiss with a bi-pod or fore grip, but it apparently it does happen.

Dmitri said:
Do the groups stay consistant after shooting a few mags or do you experience POI shift as the barrel heats up?
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In my experience they stay consistent. Pretty heavy barrel for a .223
 
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Doesn't matter if bipod or no bipod, the problem is that the handguard touches the bbl. While this is not a problem with the plastic handguard, it becomes one with the rail handguard
 
Kampfhamster said:
Doesn't matter if bipod or no bipod, the problem is that the handguard touches the bbl. While this is not a problem with the plastic handguard, it becomes one with the rail handguard
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Thanks for the info.
I have not experienced any wandering zero with my Classic Green with or without use of the bipod. (stock handguard)

Nice rifles BTW... I will get a pic. of mine up here eventually.
These pages seem to have more chatter than pictures.
 
^^^^
Very nice!
When are you going to put up a YouTube vid. on that?
You took your old ones down MrLongbranch303
 
Kampfhamster said:
Doesn't matter if bipod or no bipod, the problem is that the handguard touches the bbl. While this is not a problem with the plastic handguard, it becomes one with the rail handguard
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...and 5.56 was designed to wound. Myth.

I have the original handguards and they create the exact same contact points as the rail does. If you can show me otherwise go for it.
 
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Problem of the rail handguard is, that it isn't flexing so the pressure forces are directly linked to the barrel.
The plastic handguard is flexing and so the pressures aren't linked to the barrels as much as with the metal handguard.
 
Anyone can have a different opinion. But arguing with Kamphaster, about something Swiss, not even I am that balsy:p......Quit while your ahead dude:rolleyes: The guy lives, eats, and breaths Swiss Arms rifles, not to mention lives in Switzerland. I think it's safe to say he's got a bit more experience than most of us in this department.
 
After around 40 rds or so the bbl is heated up enough to have an effect.

In my freetime, I'm a firearms instructor. While we mostly shoot with pistols we also teach rifle classes, using the 55x-series. My fellow instructors and me saw this problem more then just a few times when people showed up with railed handguards on their rifles.

I'll see and try if I can get a friend of mine at Swissarms to do some tests.
 
Kampfhamster said:
After around 40 rds or so the bbl is heated up enough to have an effect.

In my freetime, I'm a firearms instructor. While we mostly shoot with pistols we also teach rifle classes, using the 55x-series. My fellow instructors and me saw this problem more then just a few times when people showed up with railed handguards on their rifles.

I'll see and try if I can get a friend of mine at Swissarms to do some tests.
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I would be very interested to see what SAN has to say about it. Be sure to let us know...
 
Makes perfect sense that the metal hand guards could cause a shift in POI. Once the barrel starts to radiate heat into the aluminum forend the aluminum will start to expand but at a different rate to the steel barrel. It would be interesting to compare the fit/tension of the forend when cold and when hot.
 
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