Primitive Baptists are NOT (just stressing, not yelling) Hyper Calvinists, for the simple reason that we are NOT Calvinists.
We hold to the Doctrine of Grace but have never identified ourselves with Calvin or his Institutes, and if a PB did, then he may be new in the church or he may have done so in error.
Not that we dislike our Calvinist brethren, it is just that in many points we differ with them.
Now, as to evangelism, we believe the gospel needs to be preached, but preached as a gospel of FINISHED eternal salvation and redemption by a SEATED, RESTED, RESURRECTED, SUCCESSFUL Savior and Redeemer and to be preached to those whose ears the gospel is for - the redeemed of the Lamb, who alone will rejoice at their salvation and glorify God for it, a pearl not to be cast before swine.
As to Missions ? We believe God has not changed and He still calls men out to preach the gospel to HIS PEOPLE, however, when a person hears the call to preach he MUST go IMMEDIATELY, not tarrying to find a mission board who will examine his credentials and determine his supportability and, goodness gracious (weren't the apostles mere fishermen ?), education, nor go out on a "deputization" trip to various sister churches, or put up a website where his friends can "support" him.
And the purpose of missions ? To gather a church for the purpose of glorifying God in their midst, and in the midst of crooked and perverse peoples, and it is God Himself who will add to the church: not "soul winning" methods, not conferences, not any of the trimmings we find in today's missions. It is not the purpose of the church to get souls eternally saved, the purpose of the church is education of God's people.
So, in these, we separate from the mainstream of denominational Baptists.