Why so many mediocre rifles?
You asked for feedback. Here's my take on your collection.
You Own
Ruger_______10/22______________.22LR
--Fun gun, but mediocre accuracy and funky factory trigger. Many owners spend buckets of cash accessorizing these things and still end up with a clunker. I'd dump it and get an Anschutz or a 40x.
Ruger_______Mini -14____________.223
--Mediocre gun. Known reliability problems. Cheap wood and low-grade metal finish. I'd dump it.
Springfield___M1A Loaded _________7.62/.308
--Rip off pricing. Many poor components that need to be replaced. Too heavy, and hard to scope for hunting. It has been completely eclipsed as a high-power competition rifle. The S.A. synthetic stock is junk. Unless you like to "play army", polish this up and sell it.
Remington___700 CDL____________.30-06
--If you have this, why do you need another Rem 700 in a Deer Hunting caliber?
Stag________AR-15 M4___________5.56/.223
--M4forgery? Does it have one of those uncomfortable silly adjustable stocks? How accurate is it? Consider putting a good trigger in the gun, sell the Stag upper, and putting a quality upper with a decent scope on top.
Stag________AR-15 M2___________5.56/.223
--What is it used for? You may want to adapt it for three-gun matches or service rifle. Otherwise, ARs are a pain in the butt to keep clean. Unless you use it for competition or varminting, you might be happier selling it and putting the money into a good custom varmint rifle with a premium barrel and good optics.
Marlin_______1894SS____________.44 mag
--Nice gun. Action will benefit from slicking up. Trigger needs to be tuned. But this, and the Rem 700 are the only real "keepers" in your collection, IMHO.
You plan to Buy
Ruger________Mini -30____________7.62/39
--Mediocre accuracy. Low-grade materials. Poor resale value. Pass.
Springfield ____Scout_____________7.62/.308
--WAY overpriced. Not clear what the purpose of the gun is. Poor accuracy for the price. Many quality issues with Springfield parts. You should replace Op Rod, gas system, and bolt components with GI parts. Pass.
Winchester____70________________7mm Mag
--Look for a used gun. Are you sure you want a controlled feed rifle. Will you be hunting elk or large game? If not, this duplicates your .308 for hunting. Pass.
AK__________AK-47______________7.62/39
--Mediocre accuracy. Crummy trigger. Most of the scope mounts are wobbly. Fun as a blaster. Good as a defense rifle. Everyone would like to have one sooner or later. Just buy a quality version.
Remington_____700______________.270, 7m-08
--Fine choice if you want a deer rifle. But you might be happier with a varmint cartridge. Better yet, buy an ADL and put a custom barrel on it. Part out the factory stock and barrel. OK choice for a deer gun.
Marlin________1894_____________ .357 mag
--What's the purpose? If you are shooting cowboy action, the Uberti 1866 and 1873 clones will run rings around the Marlin. Marlin build quality is inconsistent and the action is very stiff and clunky. Good value compared to the Ubertis though. But resale value is poor. Only buy this if you have to have a lever gun and can't afford more than $400. Purchase? Maybe.
AI ___________AW______________.338 Lapua Magnum
--Excellent rifle, but expensive parts and the stock is very uncomfortable for a lot of people. Ammo is extremely expensive and recoil, even with a muzzle brake, is unpleasant. You'd probably be happier with a Lapua TRG-42 in 300 WM if you want a Sniper Type rifle. But a real AIAW isn't going to get any cheaper. Ask yourself if you're really going to shoot the thing or whether it will be a "safe queen". Pass.
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Why not sell some of the junky stuff and get at least ONE true quality rifle with outstanding accuracy. That should both help you become a better shooter and should provide more satisfaction when you go to the range. If you don't reload for your rifles yet, you should learn how to do so before you think about spending a penny more on long guns.
If I were you I'd look for a used .223 Savage 12BVSS with laminated stock and Accutrigger. Sell off the factory tube, skim bed the action, send it to Fred Moreo to "time and tune" the action and screw on a PacNor prefit barrel. Buy a good Zeiss Conquest or Leupold 6-20x scope. That will deliver half-MOA accuracy (or nearly) with good reloads and give you years of satisfying shooting.
Alternatively, try to find one of the older Tikka Master Sporters in .223 Rem.