Crimping Bullets.

I can think of no reason why a person would need a "collet" crimping die, or a collet neck sizer, a good set of dies does it all if adjusted right....Uniform case neck tension is important and Benchrest shooters spend alot of effort on this, usually by using dies with bushings of diff. dia. to affect case neck tension, this is all a given. On the calibers requiring a crimp, accuracy is usually not of benchrest type requirement, so it's really only important that there be a generous crimp above all else.
 
ben hunchak said:
I can think of no reason why a person would need a "collet" crimping die, or a collet neck sizer
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Not all brass is exactly the same length. Yes, you can trim it to the same length, but why bother if you have a collet crimper? Also, the lee factory crimp die will put a crimp on a bullet with no cannelure.

So that's two reasons. I could list a few more, but you are welcome to use your imagination.
 
If it crimps without a crimp groove it prolly dents the bullets, been reloadin' forever and never needed any of these, been crimping very heavy bullets for Marlins including the 550 gr TSBS, with a Redding std. 3 die set, even crimped some 685 gr. for the .50 Sharps, this time with std. RCBS die set. All crimps were uniform and held under some very severe recoil and I never trim those cases.
 
ben hunchak said:
If it crimps without a crimp groove it prolly dents the bullets
[...]
been reloadin' forever and never needed any of these
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1) of course it does, that's the only way to crimp a non-cannelure bullet. Not great for accuracy, so depending on what you are doing it may be a bad idea - or it may not.
2) good to know, but not important. Many people have "never needed" something, because their circumstances have never called for it. Others have; good to call out the difference, but one man's "I don't need it" is another man's "cool, look what I can do". Length-insensitivity, all else being equal, is a good thing in a crimp die.
 
acrashb said:
1) of course it does, that's the only way to crimp a non-cannelure bullet. Not great for accuracy, so depending on what you are doing it may be a bad idea - or it may not.
2) good to know, but not important. Many people have "never needed" something, because their circumstances have never called for it. Others have; good to call out the difference, but one man's "I don't need it" is another man's "cool, look what I can do". Length-insensitivity, all else being equal, is a good thing in a crimp die.
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I'm afraid I really must take issue with this statement.

The OP asked if crimping would improve accuracy in an 8X57, Ben is 100% correct in stating there are reasons for crimping but accuracy is not one.
I feel a different agenda is being addressed with statements like "length insensitivity, all else being equal, is a good thing in a crimp die".

Obviously accuracy is no longer the focus, which was the OPs question.
 
Can't imagine being certain that a crimp would not improve another man's unseen rifle's accuracy. Wow! I'm good for it probably won't make a discernable difference, probably because the rifle itself lacks sufficient inherent accuracy to demonstrate miniscule differences in potential group size. All that said, the only way to know is to try.

I read a fascinating account of an accuracy fanatic shooting an unlimited bench rifle in an empty warehouse, in the early morning after daytime/nightime heating effects had disipated. Although he used a Wilson seating press, there was so little neck tension that bullets could be pulled by hand. What works, works. The only way to know if it works on your gun, is to try. As long as it is safe, it is worth trying. Hey, the OP gets to handload, try a new technique, and pop some caps. Life is good. And, he may report back that in his 8mm, a wee roll crimp, or Lee Factroy crimp, turns a scatter gun into a tack driver. Don't mean it will work in mine, but don't mean it absolutely won't, either.
 
The OP had or was getting some equipment that he didn't need and may have been unaware of proper die function/setup, esp. in regards to the 8mm cartridge, and it not needing a crimp. Some try to help new reloaders, and part of helping them is not encouraging them to buy/use things that are of no use to them.
 
ben hunchak said:
The OP had or was getting some equipment that he didn't need and may have been unaware of proper die function/setup, esp. in regards to the 8mm cartridge, and it not needing a crimp. Some try to help new reloaders, and part of helping them is not encouraging them to buy/use things that are of no use to them.
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:agree:

Chances of a special crimp die or any crimp on a bullet for a 8mm mauser improving accuracy is point--> .000000000000000000000000000000001%:)
 
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