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AR Scope
Posted: Fri Dec 11, 2015 12:01 am
by CZ550
Learned Gentlemen,
Can you give me some idea of what scope to buy for my BSA Mercury AR? It used to wear a Nikko 6x, which I believe is now deceased due to the massive variation in POI with each shot. I was looking at one of the Hawke Optics scopes that appear to be AR rated, but happy to consider other options too.
BTW...The reason I'm chasing said scope is that Matt Winser gave the Mercury a new lease of life a while back. Has turned a tired old springer into a very nice slick shooter. Nice bloke too - would highly recommend his work to anyone thinking of getting some work done to their AR!
Regards,
CZ550
Re: AR Scope
Posted: Fri Dec 11, 2015 5:50 am
by Ol 55
Probably the first question for you is what do you want to do with it? What power do you want?
I have a couple of springer rated scopes and mounts I would be prepared to let go as my air gunning
has taken a different direction.
Cheers
Ol 55
Re: AR Scope
Posted: Fri Dec 11, 2015 7:10 am
by grmkc
Ol 55 wrote:Probably the first question for you is what do you want to do with it? What power do you want?
I have a couple of springer rated scopes and mounts I would be prepared to let go as my air gunning
has taken a different direction.
Cheers
Ol 55
Sure has Uncle Ol55.
Spoke to an inporter yesterday and he had a "bucket" of returned scopes that he wanted assess. All of them were warranty returns after being on springers. Straight off there were a few that had broken reticle wires. Sure sign they have been recoiled to death.
What ever you buy, make sure they are springer rated. I'm sure Uncle will look after you.
Re: AR Scope
Posted: Fri Dec 11, 2015 7:20 am
by CZ550
The rifle is mainly used in the 10-30 yard range for general light vermin control (birds mainly), very little night use, except for the odd pigeon massacre. I was happy with the fixed 6x for what I was using it for prior to it imploding.
I'll be happy to be guided by you really. BTW - I already have some 25mm rings of std height that would preclude me from using a scope with a 50mm obj.
Cheers,
CZ550
Re: AR Scope
Posted: Fri Dec 11, 2015 10:18 am
by fenring
I know that the Merc has tiny scope grooves - unless it has the Maxgrip rail.
Mounts not creeping?
How much do you want to spend?
I've got one of these on my Diana 350 Magnum and it's been fine so far and that's saying something 'cos the 350 is a known scope killer.
http://www.airsoftworld.net/sabre-airgu ... scope.html
The 2-7x32 is sold locally, hopefully it's as strong.
http://www.gunemporium.com.au/Sabre-Acc ... Scope.html
Re: AR Scope
Posted: Fri Dec 11, 2015 10:25 am
by The Raven
I hadn't considered the hammering a scope could get from an air rifle, particularly a springer.
How does the shock/recoil to the scope compare to a cartridge rifle? I'm guessing a springer would be worse than 22LR.
Other than buying a scope designed for air rifle use, what things would you look for in a scope to survive use on an air rifle?
Geez, I learnt something today!
Re: AR Scope
Posted: Fri Dec 11, 2015 11:36 am
by curan
The Raven wrote:I hadn't considered the hammering a scope could get from an air rifle, particularly a springer.
How does the shock/recoil to the scope compare to a cartridge rifle? I'm guessing a springer would be worse than 22LR.
Other than buying a scope designed for air rifle use, what things would you look for in a scope to survive use on an air rifle?
Geez, I learnt something today!
Hi Raven,
A springer recoils in "both" directions, backward and forwards. The first recoil is from the air being released. the second is from the spring and piston reaching the end of the chamber.
The action starts in this clip at 1.30, forget the wait to get there and just jump forward, but it shows both recoils quite well....
https://www.youtube.com/watch?v=vNLfprS2-y0
This link is more techo, but shows it all with a thorough explanation......
http://www.topairgun.com/recoil
So an airgun rated scope needs to resist the shock in both directions. There are a few ways of accomplishing this. Glass etched reticles, or beefing up the reticles generally. My Gerholdt and Russ scopes have the reticle mounted with a spring on the forward side to absorb shock. You can see it when looking in the front lens.
cheers, curan
Re: AR Scope
Posted: Fri Dec 11, 2015 5:58 pm
by The Raven
Thanks for the vids Curan. I simply hadn't considered the different type of recoil associated with air rifles before.
Consider me enlightened
Re: AR Scope
Posted: Fri Dec 11, 2015 6:36 pm
by DSD
The other thing different about an air rifle scope is the extended focal range.
Most other scopes will not focus down to the 9.144-27.432 metres mentioned earlier, or be parallax free at that range.
Down side to this is on larger firearms they do not go out past 300m and some do not make 200
Re: AR Scope
Posted: Fri Dec 11, 2015 8:43 pm
by Ol 55
You are right Dave I'm looking at some scopes that focuses from 9 to 55 yards don't know which way to go though.
Cheers
Ol 55
Re: AR Scope
Posted: Sat Dec 12, 2015 12:56 pm
by CZ550
Fenrig - I'm pretty sure the mounts weren't creeping. The shots were too random (I feel) to be a mount issue.
Ol55 - pm in bound
Regards,
CZ550
Re: AR Scope
Posted: Mon Dec 14, 2015 11:39 am
by nate
The Raven wrote:I hadn't considered the hammering a scope could get from an air rifle, particularly a springer.
How does the shock/recoil to the scope compare to a cartridge rifle? I'm guessing a springer would be worse than 22LR.
The magnum springers are pretty bad, as above - you need to brace the reticule in both directions or use etched glass.
As for a power comparison - i've heard a few people break scopes that never had an issue on 308's.
AO is also mandatory, or a "rimfire" scope (parallax set at 50m) at a minimum.