Posted: 3/21/2014 7:09:13 PM EDT
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so I've been loading the same 40 .308 brass over and over for the last year
I picked up some lake city brass today at a gunshow my question is, would it be safe to load my current 41.6 grains of IMR 4895 (under a 168 grain BTHP) in the lake city brass, or should I download it a bit to work back up? |
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41 grains is barely over a starting load. I wouldn't worry about it. my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet EDIT: loading to around 2.730" |
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my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet Quoted:
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41 grains is barely over a starting load. I wouldn't worry about it. my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet How much shorter? |
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Quoted: 41 grains is a starting load. I wouldn't worry about it. If you were anywhere near 45 I'd reduce and work up but you are low. Quoted: 41 grains is a starting load. I wouldn't worry about it. If you were anywhere near 45 I'd reduce and work up but you are low. Found this at IMR. Are you using a bolt gun with the Federal or semi?
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How much shorter? Quoted:
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41 grains is barely over a starting load. I wouldn't worry about it. my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet How much shorter? I edited my post to add it. I used a hornady case length gauge and found the manuals COAL would be touching the rifling |
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Found this at IMR. Are you using a bolt gun with the Federal or semi? Quoted:
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41 grains is a starting load. I wouldn't worry about it. If you were anywhere near 45 I'd reduce and work up but you are low. Found this at IMR. Are you using a bolt gun with the Federal or semi?
savage bolt gun |
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Quoted:
my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet EDIT: loading to around 2.730" Quoted:
Quoted:
41 grains is barely over a starting load. I wouldn't worry about it. my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet EDIT: loading to around 2.730" That won't increase chamber pressure. For the bolt gun, I probably wouldn't change the charge weight with those components. But expect the velocity to be higher and a different zero. |
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I edited my post to add it. I used a hornady case length gauge and found the manuals COAL would be touching the rifling Quoted:
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41 grains is barely over a starting load. I wouldn't worry about it. my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet How much shorter? I edited my post to add it. I used a hornady case length gauge and found the manuals COAL would be touching the rifling Measuring to the bullet ogive, right? I'd be massively surprised if that bullet touches the rifling in your rifle at 2.80 inches COAL. |
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I edited my post to add it. I used a hornady case length gauge and found the manuals COAL would be touching the rifling Quoted:
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41 grains is barely over a starting load. I wouldn't worry about it. my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet How much shorter? I edited my post to add it. I used a hornady case length gauge and found the manuals COAL would be touching the rifling Are you compressing the powder at all? |
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Measuring to the bullet ogive, right? I'd be massively surprised if that bullet touches the rifling in your rifle at 2.80 inches COAL. Quoted:
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41 grains is barely over a starting load. I wouldn't worry about it. my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet How much shorter? I edited my post to add it. I used a hornady case length gauge and found the manuals COAL would be touching the rifling Measuring to the bullet ogive, right? I'd be massively surprised if that bullet touches the rifling in your rifle at 2.80 inches COAL. I use the measurement from the ogive in all my notes, but if I talk about COAL on a forum I talk about the measurement from tip to case head because everyone is referencing off of data that uses this measurement. I have yet to see a manual that lists the measurement off the ogive. |
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Are you compressing the powder at all? Quoted:
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41 grains is barely over a starting load. I wouldn't worry about it. my loads are significantly shorter than the manuals COAL due to the tight specs of my rifle but I'm personally going not going to be working any higher than 43 grains due to the deeper bullet How much shorter? I edited my post to add it. I used a hornady case length gauge and found the manuals COAL would be touching the rifling Are you compressing the powder at all? I don't believe I am, but considering the brass isn't exactly clear it's hard to tell unless I would feel it compress. (I've got no experience with compressed loads) but I will say I don't feel anything different |
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I don't believe I am, but considering the brass isn't exactly clear it's hard to tell unless I would feel it compress. (I've got no experience with compressed loads) but I will say I don't feel anything different You would generally know. The powder would come up into the case neck. |