how tight is too tight?

I won't give to many opinion's on this cause there are plenty already, This is one thing about linebreeding for sure I know for sure. some lines of dogs can be bred tighter than others before inbred depression shows up, some can't take much , others can be linebred/inbred really tight for long periods of time before any ill signs show up. There is no hard and fast rule and all that 59.6877564 % stuff is not the answer either, I don't care how much of a percent your dogs go back to another dog if the dog in question didn't throw there traits, some dogs are producers, some ain't no matter how tight there bred and all the math in the world won't make or break a dog at the end of the day.

Some times you just gotta try it and see what happens.

God Bless, Waylon