Crimping
- Thread starter winston
- Start date
- Nov 4, 2004
- 25,464
- 9,302
What are you shooting?
JD338
JD338
- Thread starter
- #3
- Nov 4, 2004
- 25,464
- 9,302
Its not really necessary unless you are shooting some handgun calibers like 44 Mag of tube fed rifles like 30-30.
It is also said that crimping may improve accuracy.
I do not crimp any rifle calibers, including my 338 RUM and it shoots sub .5 MOA.
Hope this helps.
JD338
It is also said that crimping may improve accuracy.
I do not crimp any rifle calibers, including my 338 RUM and it shoots sub .5 MOA.
Hope this helps.
JD338
- Thread starter
- #6
Richracer1
Handloader
- May 12, 2005
- 2,141
- 121
Also, the Nosler bullets in those calibers you mention do not have the cannelure for a crimp to hold on to, like what you'd find on a 375 or larger cal bullet. I don't crimp my 300RUM w/200ABs at 3137fps nor do I crimp my 338WM w/225AB.
I crimp with the Lee Factory Crimp Die for all of my auto-loaders and a few of my bolt guns. Keeps the bullet in place during the violent cycling of the action and does not require a cannelure to work. I have found that the LFCD can improve accuracy as well. If it improves accuracy in a bolt action rifle I use it, if not, I don't.
- Nov 4, 2004
- 25,464
- 9,302
Richracer1":okl5ku1w said:
Good point Richracer1.
Some of the seconds have cannelures or bands.
JD338
baltz526
Handloader
- Sep 25, 2005
- 1,074
- 8
factory ammo is crimped for very good reasons. i like to crimp my hunting ammo with the lee crimp die
OU812
Handloader
- Apr 18, 2006
- 2,099
- 2
baltz526":2p93jjd2 said:
And what would that be?
baltz526
Handloader
- Sep 25, 2005
- 1,074
- 8
safety, consistancy, accuracy,
I tried to crimp when I started loading and decided it was one more way to damage cases. If you are shooting a very heavy recoil rifle you should consider it. I loaded 30-06 with a partial neck size and minimal seating depth for a hundred or so rounds. Some of my bullets did get nocked out when I reduced the seating to .15" but that was just stupid on my part. as long as you seat them deep enough you shouldn't have trouble.
If you plan on dumping your ammo out of a steel box and sorting through it like it was a pail of marbles, you should consider crimping, but if you handle your ammo with any amount of care, it isn't necissary in my humble opinion.
If you plan on dumping your ammo out of a steel box and sorting through it like it was a pail of marbles, you should consider crimping, but if you handle your ammo with any amount of care, it isn't necissary in my humble opinion.
baltz526
Handloader
- Sep 25, 2005
- 1,074
- 8
lee crimper will never ruin brass
rick smith
Handloader
- Apr 6, 2005
- 1,249
- 0
I crimp pistol rounds and had to crimp a 375H&H but do not crimp any others. Never had a problem with accuracy, consistancy or rounds being moved in/out of the case. Factories do it not for those reasons. They have no idea how the ammo will be handled or what gun it will be shot. We also load to improve upon the rifle's accuracy or to shoot a bullet that isn't offered. Factoried do a lot that we change. Trigger adjustment, bedding, floating the barrels, etc. Don't ever mistakingly think the factories do something to better your life. Sales and liability.Rick.
In my opinion, I think crimping is a good thing. Wont hurt anything and could possable help out your loads. I have heard from a few people that it does help on accuracy.
I think that you guys should read this, it might help give answers and settle confusion.
http://www.leeprecision.com/html/catalo ... crimp.html
By the way, this has already been talked about a little bit on this topic.
Hope my info helps.
http://noslerreloading.com/phpBB2/viewt ... highlight=
I think that you guys should read this, it might help give answers and settle confusion.
http://www.leeprecision.com/html/catalo ... crimp.html
By the way, this has already been talked about a little bit on this topic.
Hope my info helps.
http://noslerreloading.com/phpBB2/viewt ... highlight=
rick smith
Handloader
- Apr 6, 2005
- 1,249
- 0
I would think if it really helped accuracy, the benchrest crowd would all be crimping. Never read where any have done so.Rick.
- Nov 4, 2004
- 25,464
- 9,302
rick smith":licdvgfp said:
+1
JD338
Well Rick, I will have to disagree with you on this one. The Benchrest crowd isn't crimping for sure. But, some are seating their bullets tight into the lands, with very little if any neck tension. Something that will not work for most hunting situations. It is not uncommon for a benchrest shooter to have his bullet so deep into the lands with so little neck tension that there is no way to remove the unfired round in tact.
I doubt that very many benchrest shooters use the same loading techniques for their hunting rounds as they do for their benchrest shooting. You are comparing apples to oranges here. I doubt that there are any benchrest shooters using Partitions or Accubonds at the bench as well. Does that mean that they are not accurate and we as Hunters should not use them.
Here is an accuracy test you should look at. In each case the use of the LFCD did improve accuracy. Not much, but it did improve.
http://www.accuratereloading.com/crimping.html
Rick, what cartridges have you tested using the LFCD? Did you have any noticeable decrease in accuracy or just no increase?
I doubt that very many benchrest shooters use the same loading techniques for their hunting rounds as they do for their benchrest shooting. You are comparing apples to oranges here. I doubt that there are any benchrest shooters using Partitions or Accubonds at the bench as well. Does that mean that they are not accurate and we as Hunters should not use them.
Here is an accuracy test you should look at. In each case the use of the LFCD did improve accuracy. Not much, but it did improve.
http://www.accuratereloading.com/crimping.html
Rick, what cartridges have you tested using the LFCD? Did you have any noticeable decrease in accuracy or just no increase?
