Streetstar wrote:
My personal thoughts on heavy bullets is that if you want to use heavier than a 68 -- its time to step up to a .243 --- but the heavy bullets is a great way for people to get a bit more out of a 5.56 for sure
Other than a couple of nice AR's , I haven't messed around with 5.56/223 stuff too much, (other than plinking with 55 grain stuff) but I wanted to build a rifle that had 8/10th the accuracy of a nice .22 BR chambered rifle , only in .223 -- and didn't want to deal with nearly the case prep benchrest accuracy demands -- It would make too much of a job out of it
Plus there are some really great precision factory loads for the .223.
The point of the heavy bullets is not to make the .223 into a .243, the point is to use the best precision bullets for the caliber, which are always the heaviest bullets for the caliber, so if you are doing the same thing, you would go with the heaviest-for-caliber bullets in a .243, and the same for a 6.5 mm, and so on.
So for LR precision bullets in a .243 you would ideally want to be somewhere around 115 gr. bullets, 140 gr. for 6.5mm, and so on. So while the heaviest (75-80 gr.) bullets in a 5.56 get into the lower weights of .243 bullets, they don't match the weight of the similarly purposed bullets in a .243. They are simply designed to get the most out of the 5.56 as a precision platform. Of course, .243 makes a
really good LR caliber, but match ammo is not as readily available as 5.56 or some of the 6.5mms. The .223 is also cheaper and a lot of fun to shoot.
If you really want to stay with lighter bullets, Black Hills does a 69 gr.OTM load that is really great. They build it for a lot of the LE agencies that already have 1/9 twist ARs or bolt guns.
As far as accuracy, getting under 1/2 MOA with an AR is not so hard with the right barrel and the right ammo (though many try to go about it the wrong way and can actually decrease accuracy), but I'm kind of old-school, too, so to me a really nice little bolt rifle is hard to beat, especially if you want to go a different direction. Plus the bolt guns are really a lot sleeker and nicer to carry (as a precision setup) than an AR. I like your idea of building on a Sako; I have always liked them.