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Rifles, Reloading, Optics, Equipment
Reloading
?????Pressure Signs?????
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<blockquote data-quote="nmbarta" data-source="post: 1285905" data-attributes="member: 78438"><p>I'm sure that some will disagree, but I have had this happen a couple times.</p><p></p><p>I Loaded about 100 rounds for my 280ai and only got through about 20 before I got distracted with a new rille, so it and the ammo sat in the safe for close to a year. I had a great load worked up with 168 vld's. It would consistently shoot 3" groups at 500 and it's a fairly light rifle. Anyway, I decided to get it back out and wanted to go verify my data before taking it hunting, so I took it to the 500 yard target and everything fell apart. I was getting flyers up to 8" high about 1 out of 5 would do that. Then I noticed that about 1 out of 5 of the fired cases had a pretty pronounced ejector mark. ES was almost 100fps. This is not a hot load (58 gr 4831sc). So I called my gunsmith.</p><p>The very first question he asked was " how old is the ammo?" I told him it was about a year old, to which he replied "there's your problem"</p><p></p><p>He suggested putting them in the press and seating the bullet in about .005 more. So I did, and about 1 out of every 5 resisted and had an audible click when bullet separated from the neck. They went right back to shooting 3" groups, problem solved.</p><p></p><p>Then the same thing happened to a friend of mines 300 wsm, but his ammo was a few years old. It destroyed several pieces of brass, way over pressure, so I did the same thing. Some of the bullets were bonded to the point that it the seating die dented the bullets before they broke loose from the case.</p><p></p><p>My gunsmith said that this is one of the most common reasons that accuracy falls off. He said he gets several calls every year right before hunting season about accuracy issues and this is the problem 90% of time with "hunters", "shooters don't ever have ammo sitting around that long"</p></blockquote><p></p>
[QUOTE="nmbarta, post: 1285905, member: 78438"] I'm sure that some will disagree, but I have had this happen a couple times. I Loaded about 100 rounds for my 280ai and only got through about 20 before I got distracted with a new rille, so it and the ammo sat in the safe for close to a year. I had a great load worked up with 168 vld's. It would consistently shoot 3" groups at 500 and it's a fairly light rifle. Anyway, I decided to get it back out and wanted to go verify my data before taking it hunting, so I took it to the 500 yard target and everything fell apart. I was getting flyers up to 8" high about 1 out of 5 would do that. Then I noticed that about 1 out of 5 of the fired cases had a pretty pronounced ejector mark. ES was almost 100fps. This is not a hot load (58 gr 4831sc). So I called my gunsmith. The very first question he asked was " how old is the ammo?" I told him it was about a year old, to which he replied "there's your problem" He suggested putting them in the press and seating the bullet in about .005 more. So I did, and about 1 out of every 5 resisted and had an audible click when bullet separated from the neck. They went right back to shooting 3" groups, problem solved. Then the same thing happened to a friend of mines 300 wsm, but his ammo was a few years old. It destroyed several pieces of brass, way over pressure, so I did the same thing. Some of the bullets were bonded to the point that it the seating die dented the bullets before they broke loose from the case. My gunsmith said that this is one of the most common reasons that accuracy falls off. He said he gets several calls every year right before hunting season about accuracy issues and this is the problem 90% of time with "hunters", "shooters don't ever have ammo sitting around that long" [/QUOTE]
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Reloading
?????Pressure Signs?????
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