Discussion in 'Handloading and Reloading' started by Lizzie Borden, Apr 12, 2021.
How much taper crimp is enough for a semi-auto .308?
Perhaps you should stick to axes Lizzie.
I am unclear as to why you ascribe the barrel obstruction that caused the subsequent rupture to insufficient crimp. Could you clarify ?
No crimp is req'd with the 308Win w/ anything approaching standard brass condition.*
Something else played out here.
* and if your brass/neck tension is so loose as to require one... you've got bigger problems
My question would be why a stuck bullet? No powder, too low of a charge?
I don't do axes. I do swords.
A short charge is a real possibility, I had two squib loads that cleared the barrel at a velocity of about 1100 fps. With the third squib load, I didn't check the chronograph. Bad mistake.
My only injury is my pride. I've never done something that stupid with a firearm. I was shooting prone and the barrel ruptured on the left side, so I was clear of the shrapnel and I was shooting in the back yard.
I suppose the smart thing to do next is weigh all the rounds, looking for light outliers.
Thinking about it - no, it did not. Missed Red Flag number 3.
It's obvious a sign from above that I need to dump the Polytech and buy an SA M1A.
I think I'm going to be unloading and reloading a bunch of ammunition, because I'm not putting this stuff in my Savage 99.
A SINGLE squib load is too many. If you had TWO that barely exited the barrel, followed by the one that didn't... you need to find a new ammo source!!!
I've decided that I'm going to rely on my Lyman Turret press.
Check whether the LC brass will even chamber well in your 99. Mine did not like milsurp brass at all, even when resized with a small base die. At the time I mentioned this, several folks chimed in with similar observations about milsurp brass and their 99s.
It's ball powder. Single cartridge charge was 44.7 grains.
Just to shame myself further, I should also have realized that something was terribly wrong when my chonometer was clocking some rounds at 2900+ fps.
Its Neck Tension https://www.sierrabullets.com/reload-basics/reloading-for-semi-autos-and-service-rifles/
My 99E has been happy with a steady diet of milsurp brass and ammo. It particularly likes RA 64 brass.
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