I already have a 7mm Ruger Mag Mark 2. But I would like to get another rifle to make longer shots on targets and deer hunting. Don't know what Caliber and Rifle to get me. Any suggestions would be helpfull. Thanks.
DCA has it right with the 7mm Mag being a wonderful choice for a long range weapon (I assume you mean the 7mm Remington Mag in a Ruger Model 77 rifle). Biggest thing you are going to run into is that the best long range shooting rifle isn't always the best rifle for hunting. The 7 Mag does both jobs admirably, up to and including moose, elk and bear;but most humane and ethical hunting shots are within 300 yards, possibly 400 on a good day when you really know the gun and conditions, and a perfect shot is available. To me a long shot on deer is 300 yards max, elk is 400 yards, only because the margin of error is so much greater on a larger target. You get a quartering shot at 200 yards and you better be sure of your shot placement,even more farther out. Your current rifle is capable of those ranges with accurate bullets and good optics. To go much farther, you need a totally different set of optics than you would use for hunting, you would have the rifle's action and bolt reworked, trued and sleeved, then you would get an air gauged premium barrel. So, unless you want to invest lots of money, limit long shots to 300 or so yards.
Again, your 7mm Mag works perfectly for hunting within a normal envelope;but I'm not ever going to say you shouldn't buy a second rifle if you wanted to. Since the 7 Mag puts you between 270 and 30-06 performance wise you can go up or down significantly. If you wanted more power and a shoulder turned to hamburger you can get a .338 Mag, or a Remington Ultra Mag or various Weatherby cartridges that are way over powered. You could also go down to 223 as a varmint gun (I never recommend 223 for deer) or a 6.5x55 Swede to give you a very low recoil cartridge that is great for deer and even elk at moderate range. Again, 270,308 and 30-06 won't offer you significant advantages over the 7mag, but all are great cartridges. The 30-06 will allow you to use much heavier bullets that the 308; up to 220 grains while the 308 is best at 150 to 180 grains (because of the short case). The 270 is a necked down 30-06 case, and you can load up to 150 grain bullets for it.
As for rifle makes, you know Ruger makes a good product. A Model 77 would be a great rifle. I prefer my Browning A-Bolts, and I plan on getting my son a Tikka T3 when he upgrades. Best value for the money currently is the Howa 1500/ Weatherby Vanguard line. There is always the various Remington Model 700s and the newer Mauser based imports. CZ makes wonderful Mauser action,controlled feed rifles with their 550 model. I've seen some CZs for less than $600 and they are a bargain at that price. If you set your sights higher, Kimber makes a top quality rifle.
Leupold VX-3L 6.5-20x56 Long Range Target Riflescope, Matte Black, Target Dot, Leupold VX-3 8.5-25x50mm Long Range Target Riflescope Matte Finish and : 66605, Leupold VX-3 6.5-20x50 Long Range Target Riflescope Silver w/ Fine Duplex: 66590, Leupold VX-3 6.5-20x50 Long Range Target Riflescope, Matte Black w/ Fine : 66575, Leupold VX-3L 6.5-20x56 Long Range Target Riflescope, Matte Black, Target Dot, Nikon Buckmasters 6-18x40 SF Rifle Scope long range side focus target , Sightron SIII 10-50x60mm Long Range LR Rifle Scope Target Dot SIIISS1050x60LRTD, LEUPOLD FX-3 12X40 ADJUSTABLE OBJECTIVE TARGET LONG RANGE DUPLEX RETICLE 66835, Leupold VX-3 Riflescope 6.5-20x50 Long Range Target Varmint Hunter Reticle 66585, RIFLE CLUBS LONG RANGE SHOOTER'S SPOTTING TARGET SCOPE 18 - 36 X 50mm, NEW BUSHNELL 6-24X50 LONG RANGE/TARGET/VARMIT/RIFLE SCOPE, NEW BUSHNELL 6-24X50 LONG RANGE/TARGET/VARMIT/RIFLE SCOPE, NEW BUSHNELL 6-24X50 LONG RANGE/TARGET/VARMIT/RIFLE SCOPE, NEW BUSHNELL 6-24X50 LONG RANGE/TARGET/VARMIT/RIFLE SCOPE, NEW BUSHNELL 6-24X50 LONG RANGE/TARGET/VARMIT/RIFLE SCOPE, Leupold VX-3L 6.5-20x56 Long Range Target Riflescope, Matte Black, Fine Duplex, Leupold VX-3L 6.5-20x56 Long Range Target Riflescope, Extreme Varmint, : 66740, Leupold VX-3L 6.5-20x56 Long Range Target Riflescope, Matte Black, : 66730, Leupold VX-3 8.5-25x50mm Long Range Target Riflescope, Leupold VX-3 8.5-25x50mm Long Range Target Riflescope Matte Finish and : 66600, USED Leupold VX-3L 6.5-20x56 Long Range Target Rifle Scope, LEUPOLD VX-3L LONG RANGE TARGET SCOPE 6.5-20X56MM 66735, LEUPOLD VX-3L LONG RANGE TARGET SCOPE 6.5-20X56MM 66730, Leupold 66585 VX-3 Riflescope 6.5-20x50mm Long Range Target Matte Varmint Hunter, Leupold VX-3L 6.5-20x56 Long Range Target Riflescope, Matte Black, Fine Duplex, Leupold VX-3L 6.5-20x56 Long Range Target Riflescope, Extreme Varmint, : 66740, Leupold VX-3 6.5-20x50 Long Range Target Riflescope Silver w/ Varmint : 66595, Leupold VX-3L 6.5-20x56 Long Range Target Riflescope, Matte Black, : 66730, Leupold VX-3 8.5-25x50mm Long Range Target Riflescope Matte Finish and : 66600, Leupold VX-3 6.5-20x50 Long Range Target Riflescope, Matte Black w/: 66585, Leupold VX-3 8.5-25x50mm Long Range Target Riflescope, Leupold VX-3 6.5-20x50 Long Range Target Riflescope, Matte Black w/Target: 66580, Leupold VX-3 6.5-20x50 Long Range Target Riflescope, Matte Black w/: 66585, Leupold VX-3 8.5-25x50mm Long Range Target Riflescope Matte Finish and : 66605, Leupold VX-3 6.5-20x50 Long Range Target Riflescope Silver w/ Varmint : 66595, Leupold VX-3 6.5-20x50 Long Range Target Riflescope Silver w/ Fine Duplex: 66590, Leupold VX-3 6.5-20x50 Long Range Target Riflescope, Matte Black w/ Fine : 66575, Leupold VX-3 6.5-20x50 Long Range Target Riflescope, Matte Black w/Target: 66580, 1931 Vintage Ad Western Long Range .22 Cartridges Man Shoots Far Target, Leupold Long Range Target Mark 4 Rifle Scope 4.5-14X 40 Mil-Dot Matte 30mm 56130, Leupold VX-3L Riflescopes 6.5-20x56mm Long Range Target Extreme Varmint 66740, Leupold VX-3 Rifle scope 6.5-20x50mm Long Range Target Dot Reticle 66580, Leupold VX-3 66590 Riflescopes 6.5-20x50 LR Long Range Target Silver Fine Duplex, NEW Sitting Bipod For Target Practice.Range Shooting.Long Steady Accuracy.14-30", Sightron SIII 8-32x56mm Long Range Scope Target Dot, Leupold VX-3 Riflescope 6.5-20x50 Long Range Target Fine Duplex Reticle 66575, Leupold VX-3 Riflescope 6.5-20x50 Long Range Target Silver Fine Duplex NEW 66590, Sightron SIII 10-50x60mm Long Range Scope Target Dot, NEW SIGHTRON SIII SS 6-24X50 LONG RANGE MOA TARGET KNOBS RIFLE SCOPE LRMOA, Leupold VX-3L Riflescope 6.5-20x56 Long Range Target Dot Reticle NEW 66735,