How can you improve the accuracy of a 257 Roberts Winchester Model 70 Featherweight if you have tried new scope bedding different grain bullets and reloading combinations and the barrel is good?
I too have a Win Mod 70 Featherweight that I purchased new in the late 80's (non controlled feed action). The best I have ever been able to get it to consistently shoot is about 1 1/4" and that is with certainly handloads. The skinny, lightweight barrel is really a roadblock to getting MOA accuracy.
However, if you are having trouble reaching at least 1 1/2" after all of the things you have already done, you might want to consider recrowning the barrel.---------------
There could be a dozen causes for your 1-1/2 inch groups but it is probably not the barrel crown. You can look at the crown and tell if it is damaged. If you do not hand load, buy some Federal or Remington or Winchester 100 grain ammo and go sight in and live with what you get. Your gun is not a target rifle. 1-1/2 inches at 100 yards is 3 inches at 200 yards and is perfectly acceptable for a hunting rifle. You can't hold better than that shooting offhand anyway. If you do hand load, try a Barnes 100 grain TTSX bullet over 35.0 grains of IMR 3031 and seat the bullet to 2.830 inches OAL. Your gun probably has a 1 in 10 twist rate and that twist rate will usually not stabilize bullets over 100 grains. Stop worrying about your group size and just go shoot. If you miss, it's not the gun's fault.
Rather than answer your question, I have posted a link to the Winchester reloading data below. I would strongly urge you NOT to ask for relaoding data on an open forum. Anyone can answer a question here- for all you know, I am 10 years old. (I'm not- but you have no way to verify that!) Link at the bottom of this answer- and shoot safe.
Do you have reloading data for hornady leverevolution 160gr bullets for a 3030 Winchester model 94 using IMR 3031 powder?
First, for your safety please DO NOT solicit reloading data from anonymous sources on the internet. In wikianswers- anyone can answer a question- for all you know, I am 12 years old, and Mom does not know I am on the computer (I'm not- but that is beside the point) Hornady does not recommend IMR 3031 for the 160 gr FTX bullet in 30-30. This is a link to the Hornady reloading page for your…
What can you tell me about a Winchester 25 20 SS Serial number 91069 with a 1979 engraved on it Value of rifle Can I get ammo andor reloading supplies dies?
What are the consequences of reloading a router without saving the running configuration to the startup configuration?
The popular 243 Winchester originated as a wildcat based on the 308 Winchester brass necked down to 243 caliber, Warren Page developed the first prototype of this cartridge, it was then made available as a factory cartridge to the public by Winchester in 1955. The 243 Winchester is the first true dual purpose class of cartridges, loaded with lighter bullets it is an extremely effective varmint round, sending a 70 grain bullet out the barrel…