Powder Ignition Failure

[CINDERS]

Parashooter in reply and as requested to post #36 I did a spurious load up for my 6.5 x 284 though this one to excessive pressure limits but also indicates 100% burn, I know that with loads that are within SAAMI certain powders regardless of loaded grains will indicate a safe level of pressure whilst telling you of 100% burn achieved before base of bullet exits muzzle in black font.
I also understand and realize what your saying that 100% burn is not wasting powder and desirable but at what point is the 100% achieved and how far is that going to push the projectile down the barrel I just like to play it safe even if it means throwing a bit of gravel out the end of the muzzle like anything in what we do it is up to the individual and what they are comfortable with.
In my 6.5/284 having a little gravel going out the end is paled compared to the fire cracking and throat erosion this cartridge is famous for but for inherent accuracy I can put up with it originally I was going to go with a Shooting times Westerner till I read the barrels are normally toasted at 700 rounds + - dependent on how hard you drive them.
In the second pic I have included a load that whilst getting up in pressure shows the bullet exited the barrel and a 99.39% burn so .61% is not much out of 51 grains