That could not be farther from the truth.
If a factory receiver is trued correctly it will most often shoot extremely well but it has to be blueprinted and is square with receiver threads trued to the axis if the receiver bore and a good barrel fit and good chamber and crown, yes they shoot extremely well.
BUT, you can not put crap in and get gold out. Some factory rifles shoot extremely well. I get the "My Rem 700 will shoot sub 1/4 moa groups all day long!" comments all the time from those that do not believe factory rifles are worth the expense. For them, that is true because in all honesty, most of them do not need a full custom rifle
for what they do in the field.
I hear this comment all the time that their factory rifles will shoot every bit as well as a full custom rifle
. If possible, I generally call them out on their comments and invite them to a day of shooting to compare their favorite factory rifle to one of my full customs.
Of the probably 100 shooters I have invited to a shooting session over the past 10 years, only 5 have agreed to the challange. Of those, all said their rifles were sub 1/4 moa rifles but they really start to sputter when I set them up on a 1/2 moa sized target at 600 to 800 yards yards and set up the video camera. I will even help them get their rifles on target at that range as none of them have had their rifles set up for anything but conventional hunting and shooting ranges.
Two of those 5 shooters could consistantly hit a 1/2 moa sized target at 600 yard and they were using Rem 700 Senderos, one in 7mm Rem Mag and the other in 300 RUM. The other three could not put two shots in a row on my 1/2 moa gong at 600. None of them could put shots consistantly on my 1/2 moa gong at 800 yards.
The first comment out of their mouths after proving what their amazing factory rifle could do was "I ment its a 1/4 moa rifle at 100 yards, not 600 or 800 yards!!" I just smile at them.
They usually they get puffed up and challange me to shoot my custom rifles
that well and my reply is NOPE, I am not going to be shooting my rifle, YOU ARE!!!
I set the rifles up, generally I take my original 300 Allen Xpress on my very first Raptor LRSS rifle.
Of the five, every one could easily keep shots on my 1/2 moa gong at 600 yards. One of those guys intentionally pulled his shots to try to prove his point. He was a bit humbled when I ran a magazine full through (3 rounds) and rang the gong every time. When he realized he was coming off as a child be shot the rifle as he should have and also made consistant hits.
Not only that, but every one of them also put consectutive shots on the 1/2 moa gong at 800 yards as well. Certainly there were some misses but the vast majority were solid hits.
Now, I have seen a few factory rifles, but that I mean right out of the box rifles that with their preferred loads would shoot as well as any custom rifle. There have only been two of them over the years and they had to be loaded with their preferred loads and would not shoot most loads as well but with their preferred loads, they shot extremely well. If that was the norm, I would be out of business but that is CERTAINLY not the norm.
So your comments are no where near true.
The smaller the chambering the less critical it is for receiver machining to be perfect. I have seen some 223 Rems that had one bolt lug completely floating that would easily shoot 1/2 moa three shot groups. As you increase case size, especially case head diameter, its becomes more critical to have everything perfect.
Anyone can build a super accurate SMALL rifle, its easy. Its MUCH more challanging to build an accurate rifle on the RUM or Lapua or 408 CT parent case. Its just attention to detail and using quality componants. Not rocket science but it needs to be as perfect as possible or you WILL see it down range.
Again, your comment could not be farther from the truth. We now know your opinion, its wrong but your welcome to it even if it is wrong. On average, there is no comparision between a factory rifle and a full custom rifle in the areas of strength, rigidity and consistancy with a variaty of loads.
Again, seems like your simply trolling but this is getting old fast.