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Posted: 4/4/2014 7:51:19 PM EDT
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Gentlemen,
I switched from Winchester Small Rifle to Remington 7 1/2 primers andI was hoping you guys could help me with a few questions. When measuring the seating depth I noticed the Remington's range from .004 - .009 below flush. Once I realized the large difference I began to measure each one which slowed down the process even more. So I humbly ask: 1. Is .004 - .009 alright or should I deprime them all and start over? 2. Do you guys measure each one or am I being a bit too cautious? 3. Does it affect accuracy as far as general plinking or inside 100 yards? .223 PMC brass Remington 7 1/2 primers As always, your input is greatly appreciated! |
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Quoted:
Gentlemen, I switched from Winchester Small Rifle to Remington 7 1/2 primers andI was hoping you guys could help me with a few questions. When measuring the seating depth I noticed the Remington's range from .004 - .009 below flush. Once I realized the large difference I began to measure each one which slowed down the process even more. So I humbly ask: 1. Is .004 - .009 alright or should I deprime them all and start over? 2. Do you guys measure each one or am I being a bit too cautious? 3. Does it affect accuracy as far as general plinking or inside 100 yards? .223 PMC brass Remington 7 1/2 primers As always, your input is greatly appreciated! That tolerance is acceptable to me, but if you have the time, pick up a primer pocket uniform tool and run all your brass through it and you will get much better tolerance on seating depth. Accuracy wise you won't see much if any difference between .004 and .009. As long as they are "slightly below flush" then you shouldn't run into any issues. |
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Lyman's 49th says between 0.003 and 0.005 is what you're shooting for to properly stress the priming pellet. As for the deeper one's, I can't say that they are fine and be able to back that statement up.
That being said, I would shoot it as long as I wasn't going for accuracy or self defense. |
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Thanks guys!
I have never measured them before either until tonight. I'm not even sure why I checked the first one to be honest, but wish I wouldn't have because now I'm half tempted to go back down and deprime them. Then again, if I load up a few and they go bang I know it isn't something that I need to be concerned with in the future. |
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Quoted:
Gentlemen, I switched from Winchester Small Rifle to Remington 7 1/2 primers andI was hoping you guys could help me with a few questions. When measuring the seating depth I noticed the Remington's range from .004 - .009 below flush. Once I realized the large difference I began to measure each one which slowed down the process even more. So I humbly ask: 1. Is .004 - .009 alright or should I deprime them all and start over? 2. Do you guys measure each one or am I being a bit too cautious? 3. Does it affect accuracy as far as general plinking or inside 100 yards? .223 PMC brass Remington 7 1/2 primers As always, your input is greatly appreciated! How are you priming, on the press or handheld tool? Did you notice any difference in amount of pressure it took to seat the Remington versus the Winchester primers? I ran into a problem with .308 Win loads for M1A. Strong firing pin strike but no bang. About 6 out of 300 rds did this. Ideal primer depth for M1A .308 is about .008". Using super accurate tool my company makes, I measured the "no bang" primer depths at .013"-.017". These also happened to be the last rounds I primed on press (Lee single stage). Turns out, in my zeal to get primers sub flush I put so much pressure on the press arm the primers actually crushed a bit. The pellet split and there was none left between primer head and anvil. Lesson learned: sub flush is good, too sub flush is bad. |
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Quoted:
How are you priming, on the press or handheld tool? Did you notice any difference in amount of pressure it took to seat the Remington versus the Winchester primers? I ran into a problem with .308 Win loads for M1A. Strong firing pin strike but no bang. About 6 out of 300 rds did this. Ideal primer depth for M1A .308 is about .008". Using super accurate tool my company makes, I measured the "no bang" primer depths at .013"-.017". These also happened to be the last rounds I primed on press (Lee single stage). Turns out, in my zeal to get primers sub flush I put so much pressure on the press arm the primers actually crushed a bit. The pellet split and there was none left between primer head and anvil. Lesson learned: sub flush is good, too sub flush is bad. Quoted:
Quoted:
Gentlemen, I switched from Winchester Small Rifle to Remington 7 1/2 primers andI was hoping you guys could help me with a few questions. When measuring the seating depth I noticed the Remington's range from .004 - .009 below flush. Once I realized the large difference I began to measure each one which slowed down the process even more. So I humbly ask: 1. Is .004 - .009 alright or should I deprime them all and start over? 2. Do you guys measure each one or am I being a bit too cautious? 3. Does it affect accuracy as far as general plinking or inside 100 yards? .223 PMC brass Remington 7 1/2 primers As always, your input is greatly appreciated! How are you priming, on the press or handheld tool? Did you notice any difference in amount of pressure it took to seat the Remington versus the Winchester primers? I ran into a problem with .308 Win loads for M1A. Strong firing pin strike but no bang. About 6 out of 300 rds did this. Ideal primer depth for M1A .308 is about .008". Using super accurate tool my company makes, I measured the "no bang" primer depths at .013"-.017". These also happened to be the last rounds I primed on press (Lee single stage). Turns out, in my zeal to get primers sub flush I put so much pressure on the press arm the primers actually crushed a bit. The pellet split and there was none left between primer head and anvil. Lesson learned: sub flush is good, too sub flush is bad. I hand prime with the RCBS hand tool, seating until I feel them bottom out. I didn't notice any difference between pressure needed to seat the Winchester and Remington primers. For all I know the Winchesters could have been just as deep. As mentioned, I'm really not sure what even prompted me to measure the first one, but once I did my OCD kicked in and I measured every one of them. Just for a comparison, I measured some of my .308 loads as well and they were pretty much the same. I'm going to go ahead and load them since it isn't really a safety issue. Hopefully they all go bang so I don't have to worry about it in the future. |
| If you don't care about consistency or quality control, seat the primers however you like. I figure that if I am going to spend hours of my time reloading, consistency is critical if i want to end up with high quality, accurate ammunition and I seat my primers .002 - .006 depth, ideally .004. Consistency in every step does make a difference. |
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Quoted:
If you don't care about consistency or quality control, seat the primers however you like. I figure that if I am going to spend hours of my time reloading, consistency is critical if i want to end up with high quality, accurate ammunition and I seat my primers .002 - .006 depth, ideally .004. Consistency in every step does make a difference. I try to be as consistent as possible, however I'm less than 2 months into my reloading career so have no doubts I have room for improvement. Thus far I have always erred on the side of caution, been consistent in every step, and produced some ammo that has given me excellent results in both function and accuracy. If you can explain a way to seat the primers consistently other than "by feel" then I'd love to hear it. |
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Quoted:
If you don't care about consistency or quality control, seat the primers however you like. I figure that if I am going to spend hours of my time reloading, consistency is critical if i want to end up with high quality, accurate ammunition and I seat my primers .002 - .006 depth, ideally .004. Consistency in every step does make a difference. The only way to seat primers to a consistent depth is to uniform the primer pocket as all primers must be seated to bottom out in the pocket to go bang. If you seat a primer to a desired depth leaving a space between the anvil and the pocket, the firing pin will finish seating it to the bottom for you. |
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