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Rifles, Reloading, Optics, Equipment
Reloading
H4350 load work up - 243 Win.
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<blockquote data-quote="azsugarbear" data-source="post: 764418" data-attributes="member: 4809"><p>Rmitch,</p><p></p><p>When first working up a load, I start low and then load just one round at either .5 gr. increments (for 243 or 270), or at 1 gr. increments (for 338 Lapua). The purpose of this exercise is to help me identify where my max load is with a particular bullet, powder and barrel combination. Once I start to see pressure signs, I back off 1 or 2 grains from there and that becomes my upper limit. Each rifle is unique as to the max pressure/loads it can tolerate.</p><p></p><p>I have a REM model 7 in 243 with a Brux 1-in-8.5 twist barrel shooting the 105 gr. Begrer vld. I tend to run loads on the warm side - and my Brux barrel seems to be a "fast" barrel. I found 42.5 gr. of H4831sc and 41.0 gr. of H4350 both produce outstanding groups. But remember: seating off the lands, lot number of the powder, even the difference in the guilding metal used in the bullet's jacket, will all have a bearing on pressure. That's why we always caution "start low and work up slowly"' Good luck.</p></blockquote><p></p>
[QUOTE="azsugarbear, post: 764418, member: 4809"] Rmitch, When first working up a load, I start low and then load just one round at either .5 gr. increments (for 243 or 270), or at 1 gr. increments (for 338 Lapua). The purpose of this exercise is to help me identify where my max load is with a particular bullet, powder and barrel combination. Once I start to see pressure signs, I back off 1 or 2 grains from there and that becomes my upper limit. Each rifle is unique as to the max pressure/loads it can tolerate. I have a REM model 7 in 243 with a Brux 1-in-8.5 twist barrel shooting the 105 gr. Begrer vld. I tend to run loads on the warm side - and my Brux barrel seems to be a "fast" barrel. I found 42.5 gr. of H4831sc and 41.0 gr. of H4350 both produce outstanding groups. But remember: seating off the lands, lot number of the powder, even the difference in the guilding metal used in the bullet's jacket, will all have a bearing on pressure. That's why we always caution "start low and work up slowly"' Good luck. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
H4350 load work up - 243 Win.
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