Monday, September 25, 2006

 

Re: what's the difference (Flashlights) between centerfire and rimshot?

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Re: what's the difference between centerfire and rimshot?
<<Is there anything else I should consider. And no. Just want to buy the right gun....not use different ammo in the same gun.>> It really depends on the use you intend for this gun: for long range varmintnig, you'd want something like a .223, I think. For short range plinking, a .22 LR rimfire. Laws also become an issue. In California, your choice of .223 can't include an AR15 (about my favorite rifle) or many other semi-autos.

Rock River AR-15
Thinking of purchasing -AR-15 made by Rock River--has anyone out there had one. Was it good or was it a piece of shit.

Re: what's the difference between centerfire and rimshot?
<<and what do you recommend for varmit hunting and target practice plinking in a .22 rifle?>> Centerfire and rimfire refer to where priming is in the cartridge. In centerfire, there's a primer cup inserted into a pocket in the center of the cartridge. The firing pin dents it, firing the cartridge. One benefit is that after you use the cartridge, you can punch out the primer on your press, put in a new one and reload the cartridge for some cost savings. .223 Remington is a centerfire cartridge that's a varmint hunting standard. If you go to this URL and look at the picture of a .303 cartridge by the header "Centerfire", you'll note a circle in the center of the base. That's a primer: http://en.wikipedia.org/wiki/Cartridge_(firearms) Rimfire cartridges are only made in .22 (short, long, long rifle) and some new .17 caliber rounds I'm not up on right now. In rimfire rounds, there's no replaceable primer: a primer paste is spread around the inside base of the cartridge (the rim). The firing pin of the gun actually crushes a part of the rim, firing it. These rounds can't be replaced. Couldn't find a picture but imagine a flat base with no primer structure visible form the outside. One safety note: when firing a cartridge in a gun, you should only use a round that the gun is chambered for, it'll be stamped on the gun (usually the barrel), often both the cartridge base and the box the cartridge came in. If they don't all agree (aside from a couple cases like .38 special, shot in a .357 magnum gun) do NOT try to shoot that cartridge in that gun. As an example, you can chamber a 8mm mauser cartridge in a .30-06 rifle but trying to drive a 7.9 mm bullet down a bore 7.62 mm in diameter usually destroyed the gun and occasionally the shooter. I hope this doesn't sound patronizing, it's just that it sounded like (and this could be my reading error) you wanted to shoot both .22 rimfire and .223 or something like it in one gun.

Upper Receiver Parts : AmeetecArms.com, Home of the AR15
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Re: Rock River AR-15
I have RR upper on Bushmaster lower, love it. Never had any trouble. They did get the DEA contact, should say something.

Re: what's the difference between centerfire and rimshot?
Thanks for the explanation. I'm not a reloader, and don't expect to become one. Is there anything else I should consider. And no. Just want to buy the right gun....not use different ammo in the same gun. Thanks!

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Re: Rock River AR-15
I have one of their nm triggers in my bushmaster and it is nice. They do have a good reputation.

Upper Receivers : AmeetecArms.com, Home of the AR15
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Re: what's the difference between centerfire and rimshot?
Nice...CZs are supposed to be nice guns. One thing to keep in mind is that .22LR is only effectively accurate out to about 100 yards and a windy day can blow that. A .223 in a similar ifle might go out as far as 600 yards. The flip side is that .223 is really inexpensive ammo and you can afford to shoot with it a lot...

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