newsteadvic wrote:I don't know if you are the same person that posted this on Shootingaustralia.com.au forum:
http://shootingaustralia.net/forum/relo ... rea#128013
However it needs the same reply that users over there suggested - the crucial piece of information that the author has left out there is that this effect, sometimes refered to as the SEE (secondary explosive effect) occurs with slow powders. The very fast pistol/shotgun powders and medium speed powders lie AR2205, AR2207, AR2206H can be safely reduced, as witnessed by factory data for reduced loads with these powders. THis is from the ADI reloading handbook:
newsteadvic wrote:However I again feel that this statement needs some context.
newsteadvic wrote:Welcome Josh, interesting to have some overseas input.
However I again feel that this statement needs some context. yes, for slow powders ( which for Australian purposes I would consider AR2208 (varget for the cousins)) and slower powders to need at least 80% case fill.
However I feel quite confident about reducing fast powders, examples being Hodgdons rule for AR2206h (H4895 for the cousins) which states that you can reduce up to 60% of max jacketed loads without filler, for cast or jacketed projectiles. For cast projectiles and fast powders you could go even lower as per books like the Lyman Cast Handbook 3rd Ed and 4th.
I do not use filler for reduced loads so cannot talk to that point.
Blr243 wrote:I was impressed with the trailboss powder and it’s guidelines for safe use until I tried a full case of it ( not compressed ) in my 300 blk behind a 160 grain hornady flex tip .... bang, hiss, and the projectile stuck in the barrel with just the tip of it poking out the end if the barrel. I’ll be pulling all those projectiles and starting again with caution
Blr243 wrote:I was impressed with the trailboss powder and it’s guidelines for safe use until I tried a full case of it ( not compressed ) in my 300 blk behind a 160 grain hornady flex tip .... bang, hiss, and the projectile stuck in the barrel with just the tip of it poking out the end if the barrel. I’ll be pulling all those projectiles and starting again with caution
Blr243 wrote:I was impressed with the trailboss powder and it’s guidelines for safe use until I tried a full case of it ( not compressed ) in my 300 blk behind a 160 grain hornady flex tip .... bang, hiss, and the projectile stuck in the barrel with just the tip of it poking out the end if the barrel. I’ll be pulling all those projectiles and starting again with caution
SCJ429 wrote:How much Trailboss did you put in the case? Very surprised it didn't develop enough pressure to push it out of the barrel. Never had a problem with Trailboss shooting between 1000 and 1500 fps.
Blr243 wrote: If I can duplicate the load and I get five successful shots I can probably put it down to me stuffing something up on that trip away