Trust kosta50, or trust FF Bruce...
Here is the Wiki article on the Chester Beatty Papyrus:
http://en.wikipedia.org/wiki/Chester_Beatty_Papyri
It is quite a bit more extensive than what you pictured.
Also see:
http://en.wikipedia.org/wiki/Bodmer_Papyri
and: http://en.wikipedia.org/wiki/List_of_New_Testament_papyri
Dating is variable, but some parts are from 150-200 AD, which would be 100-125 years after they were first penned. Everything I’ve seen indicates 95% reliability, with no doctrine in any question.
Some more info:
“When all 5,250+ manuscripts are compared, a total of about 100,000 variants are found. At first glance 100,000 seems like a large number, but this includes misspellings, changes in word order of a sentence, the omission or inclusion of the Greek definite article with proper names, and other minor variants. When all the minor variants are eliminated that do not affect the sense of meaning of a passage, we are left with only 235 variants of any significance. Of these there are only 5 which bring into question the genuineness of a part of the text. Here is a list of the 5 passages in question: Mark 16:9-20, Luke 22:20, 22:43-44, 23:34, and John 7:53-8:11. (4)
(http://www.iamnext.com/spirituality/NTrely.html)
Mark 16.9-20 (ESV):
[Some of the earliest manuscripts do not include 16:9-20.]
Jesus Appears to Mary Magdalene
9[[Now when he rose early on the first day of the week, he appeared first to Mary Magdalene, from whom he had cast out seven demons. 10 She went and told those who had been with him, as they mourned and wept. 11But when they heard that he was alive and had been seen by her, they would not believe it.
Jesus Appears to Two Disciples
12 After these things he appeared in another form to two of them, as they were walking into the country. 13 And they went back and told the rest, but they did not believe them.
The Great Commission
14Afterward he appeared to the eleven themselves as they were reclining at table, and he rebuked them for their unbelief and hardness of heart, because they had not believed those who saw him after he had risen. 15And he said to them, “Go into all the world and proclaim the gospel to the whole creation. 16 Whoever believes and is baptized will be saved, but whoever does not believe will be condemned. 17And these signs will accompany those who believe: in my name they will cast out demons; they will speak in new tongues; 18 they will pick up serpents with their hands; and if they drink any deadly poison, it will not hurt them; they will lay their hands on the sick, and they will recover.”
19So then the Lord Jesus, after he had spoken to them, was taken up into heaven and sat down at the right hand of God. 20And they went out and preached everywhere, while the Lord worked with them and confirmed the message by accompanying signs.]]
Luke 22.20: “20And likewise the cup after they had eaten, saying, “This cup that is poured out for you is the new covenant in my blood.”
Luke 22.43-44: “43And there appeared to him an angel from heaven, strengthening him. 44And being in an agony he prayed more earnestly; and his sweat became like great drops of blood falling down to the ground.”
Luke 23.34: “34And Jesus said, “Father, forgive them, for they know not what they do.” And they cast lots to divide his garments.”
John 7/8: “The Woman Caught in Adultery
53[[They went each to his own house, 1but Jesus went to the Mount of Olives. 2 Early in the morning he came again to the temple. All the people came to him, and he sat down and taught them. 3The scribes and the Pharisees brought a woman who had been caught in adultery, and placing her in the midst 4they said to him, “Teacher, this woman has been caught in the act of adultery. 5Now in the Law Moses commanded us to stone such women. So what do you say?” 6This they said to test him, that they might have some charge to bring against him. Jesus bent down and wrote with his finger on the ground. 7And as they continued to ask him, he stood up and said to them, “Let him who is without sin among you be the first to throw a stone at her.” 8And once more he bent down and wrote on the ground. 9But when they heard it, they went away one by one, beginning with the older ones, and Jesus was left alone with the woman standing before him. 10Jesus stood up and said to her, “Woman, where are they? Has no one condemned you?” 11She said, “No one, Lord.” And Jesus said, “Neither do I condemn you; go, and from now on sin no more.”]]”
The only doctrinally important passages have parallel texts elsewhere.
For the text of FF Bruce’s “THE NEW TESTAMENT DOCUMENTS
Are they Reliable?”, see http://www.worldinvisible.com/library/ffbruce/ntdocrli/ntdocont.htm
Book of Enoch in a Codex is "no doctrine in question?" Absence of pericope adulterae is proof that older copies are forgeries. C. Sinaiticus has the Epistle of Barnabas and the Shepherd of Hermas as "canon." And one of oyur source with "no doctirne in question" has Hebrews right after Romans
Besides, we know very well that the Church as a hwole has theological and doctirnal issue in the 2nd and 3rd and 4th centuries and even later than that, so how can you claim that some of the codices used didn't have them? The Orthodox Curch of Ethiopia to this day considers the Book of Enoch as inspired.
There has never been a time, ever since Paul came on stage, that the Church, or the writings of the Church were free from internal doctrinal issues.
You said that from the papyri predating the 4th century, specifically the Chester Beatty Library papyri, we could assemble the whole NT.
Your own source proves this is not true!
The oldest fragments, taken together, are not sufficient for that task and that, notably, there is much variation among them.
Cutting and pasting is good for a collage in art classes, but not good enough when it comes to something that is supposed to be the pristine word of God.
As far as I am concerned, you can believe in pink unicorns on Jupiter. Just don't claim they are true unless you can back it up with more than shabby evidence, or worse, your own evidence that proves you wrong.