Can’t keep groups under 3 to 4 inches with Marlin lever and Burris full field scope
If your Marlin shoots within four inches at 100 yards, I don't think you have a problem. These are not target rifles.
There are so many Gun writers and Internet posters who claim sub MOA out of their lever actions that when your Marlin won't group similarly small groups, you think something is wrong. I think Gunwriters are liars and shills, and they deliberately don't fire enough rounds to determine inherent accuracy. Most internet posters are just following the group think, which is the expectation that all rifles and shooters are sub MOA. This is also a lie. These guys are not posting 10 or 20 shot groups, the three round groups they post (if they post) are statistical aberrations that you would expect with small sample sizes. That is another reason gun writers don't shoot ten or 20 shot groups. Chance and small group sizes it makes it easier to claim a higher degree of accuracy than actually exists. These guys shoot a number of three shot groups, toss out the bad ones, claim the smaller groups represent the inherent accuracy of the weapon. The worst part of the thing, is not only are they lying to the world, they are lying to themselves.
I shot hundreds of rounds through my Marlin 336 in load development and the better ones were around four inches, but the really bad combinations would not hold on an 8.5" X 11" sheet of paper.
These were the best two loads, and they are between 2MOA and 3 MOA for a ten shot group. Do not copy my powder charges, my chamber was huge and all my charges are over reloading manual maximums. The velocities were book, so I concluded I had a big chamber. I do think the same powders will work well in some one elses rifle.
I took the rifle to CMP Talladega and shot it at 200 yards. With the best load it will hold the ten ring and shoots around 2 MOA at distance. That is about all I will get out of it with its best ammunition.
This was a recommended load, it shot well, but it strung the group up and down. That is a 7.9 inch group at 200 yards.
This is my best load, it will consistently shoot round groups and hold the ten ring.
I tried factory 150 grain Remington, the first shots were from a fouled barrel and placed high. I continued to shoot without adjusting anything, wanting a group size, and the group went down into the bull. I think this is actually pretty good except for the early shots.
As a class, lever actions are so inaccurate that the Range Officers at CMP Talladega won't let you shoot at 300 yards if you can't keep all shots in the black at 200 yards. And they unequivocally won't let you shoot at the 600 yard targets. Can't blame them. The marksmanship skills of the average American is pretty abysmal. A bud of mine works at an indoor range. They have a 25 yard rifle range, but before you are allowed to shoot, you must demonstrate your ability to shoot accurately. The standard is an 18" X 18" target at 25 feet. You have to hit the 25 foot target. Bud claims the vast majority (I think he said 80%) are unable to hit the 25 foot target with a rifle!.