Doublecluck
Well-known member
So I have been in the process of building a load for the kids 7-08 for deer and lope. I am using the new IMR Enduron 4451 powder and 140 gr vld hunting bullets. Here is where I am at. Gun is rem 700 7-08
Powder starting-42.3-max 45.5.
SAAMI coal is 2.80
Bullet touches around 2.865
Started with 43.5 grs of powder and loaded the following
5@ 2.855
5@ 2.835
5@ 2.805
5@ 2.775
Never went to 2.745 because I thought it may be too short.
So the 2.775 set shot the best @ just over 1.5"
From there I worked up the powder charge in .3 gr increments to max with no pressure signs and the 45 gr charge was best @ .9 grouping. All this happened last year and I was pretty happy with it so we loaded up and went with it.
Fast forward to the other day where I was bored and started thinking maybe there was some more potential in this. Last night I went and loaded 5 @ 2.77 and today shot a .75 group. Still no pressure signs. So now for the question.
I am .030 less than recommended coal but .5 grs under IMR recommended max charge.
Can I safely continue in .003 increments shortening the bullet coal @ the 45grs?
At what point does a bullet become too short?
Could loading them short cause more "throat" wear (not sure if that is the right term)?
Powder starting-42.3-max 45.5.
SAAMI coal is 2.80
Bullet touches around 2.865
Started with 43.5 grs of powder and loaded the following
5@ 2.855
5@ 2.835
5@ 2.805
5@ 2.775
Never went to 2.745 because I thought it may be too short.
So the 2.775 set shot the best @ just over 1.5"
From there I worked up the powder charge in .3 gr increments to max with no pressure signs and the 45 gr charge was best @ .9 grouping. All this happened last year and I was pretty happy with it so we loaded up and went with it.
Fast forward to the other day where I was bored and started thinking maybe there was some more potential in this. Last night I went and loaded 5 @ 2.77 and today shot a .75 group. Still no pressure signs. So now for the question.
I am .030 less than recommended coal but .5 grs under IMR recommended max charge.
Can I safely continue in .003 increments shortening the bullet coal @ the 45grs?
At what point does a bullet become too short?
Could loading them short cause more "throat" wear (not sure if that is the right term)?
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