Incremential Load development .. Ladder test Great Results !!!

[Mobeasto]

OAl is 3.325'' and not 61 gr. it was 59.6 gr or 59.5 gr maybe more real..

 

[AlexF]

I don't know exact OAL but at 3.4" it's still at 73k psi and 3034 fps at 61gr.

I wanted to say this before but waited for someone with Quickload:
reloaders run overpressure loads with no problems all the time, in the long term, it's a bad idea because of metal fatigue which incurs a risk of catastrophic failure but, in the medium-short term, the only downside is often much shorter barrel life (up to 3 times shorter barrel life).

Very good reading on this:
http://www.longrangehunting.com/articles/rifle-reloading-pressure-1.php

Alex

 

[unstableryan]

Shortening it a bit to your measurement and decreasing the charge to 59.5 still shows it at 70928 psi.

 

[1899]

I wanted to say this before but waited for someone with Quickload:
reloaders run overpressure loads with no problems all the time, in the long term, it's a bad idea because of metal fatigue which incurs a risk of catastrophic failure but, in the medium-short term, the only downside is often much shorter barrel life (up to 3 times shorter barrel life).

Very good reading on this:
http://www.longrangehunting.com/articles/rifle-reloading-pressure-1.php

Alex

That is a good read, thanks for posting it. This caught my eye:

What would be the problem with that? Isn’t a load safe as long as the brass holds up? Well, no. The modern accepted maximum pressure level of about 65,000 psi is the highest pressure modern steels can withstand over and over again. If you keep feeding even a very strong bolt rifle 70,000 psi ammunition, some part of the action is likely to fail. If there’s a flaw somewhere inside the action, say in one of the locking lugs, it will fail even sooner. Modern rifles are built with considerable margin of error, but aren’t infallible.

Thanks for posting the calculated pressure Unstableryan.