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To crimp or not to crimp
- Thread starter ldlfh7
- Start date
Yes. I think so. Even with a single shot. If you're running slow, difficult-to-ignite propellants (thinking W296/H-110), you want a good robust crimp to hang on to the bullet as long as possible. Doing so will yield more consistent ignitions, and thus, more consistent results.
With lubricated lead bullets it will still help to get start pressure up. With jacketed bullets there is no reason to crimp the .44 Mag except enough to remove the case flare and except for revolvers (to prevent bullets backing out).
I didn't see Nick's post as I was composing while he put it up, but I'll note that .30 Carbine rounds, which run a lot on 296/H110 are not crimped and it doesn't seem to be an issue.
You can test this with a chronograph. If crimping improves (reduces) your velocity SD, then it's probably a good idea just so long as you don't distort the bullet.
I didn't see Nick's post as I was composing while he put it up, but I'll note that .30 Carbine rounds, which run a lot on 296/H110 are not crimped and it doesn't seem to be an issue.
You can test this with a chronograph. If crimping improves (reduces) your velocity SD, then it's probably a good idea just so long as you don't distort the bullet.
Any benefit of crimping for the single shot?
Is there any chance that these rounds might end up in your revolver?? If so then crimp, if not then ??????????.
Jim
I am the fan of bullet hold, I want all the bullet hold I can get, and I understand when the trigger is pulled things happen in a hurry.
Then there are those that haul their loaded rounds to the range in a baggie. I don't. I do not crimp bottle neck type cases, I agree with Lyman Gun Sight. They claimed it had to be done correctly, if not done correctly there was a great big chance bullet hold would be reduced, me being the one that wants all the bullet hold he can get decided not to crimp.
Pistol? I crimp pistol ammo. Crimping on a cam over or non cam over press requires a whisper of effort.
F. Guffey
Then there are those that haul their loaded rounds to the range in a baggie. I don't. I do not crimp bottle neck type cases, I agree with Lyman Gun Sight. They claimed it had to be done correctly, if not done correctly there was a great big chance bullet hold would be reduced, me being the one that wants all the bullet hold he can get decided not to crimp.
Pistol? I crimp pistol ammo. Crimping on a cam over or non cam over press requires a whisper of effort.
F. Guffey
I have a Contender w/.44 Magnum barrel and my reloads get a crimp, both jacketed and lead. I believe, as in Nick C S's post, a crimp aids in consistent slow powder ignition.
FWIW; I have 5, .44 magnums and if there is anything different about the load, or I load for a specific gun, I make sure that information is on the label (I label every load), i.e.; For my 629, I load light and write on the label in large black letters "629 lite". Same for my Puma (heavier loads, .433" dia. bullets). Contender loads are labeled "CON" (every charge weighed and every bullet weighed and measured, .430") and the rest are "normal" loads for my Dan Wesson and My Ruger. No mixing up loads...
FWIW; I have 5, .44 magnums and if there is anything different about the load, or I load for a specific gun, I make sure that information is on the label (I label every load), i.e.; For my 629, I load light and write on the label in large black letters "629 lite". Same for my Puma (heavier loads, .433" dia. bullets). Contender loads are labeled "CON" (every charge weighed and every bullet weighed and measured, .430") and the rest are "normal" loads for my Dan Wesson and My Ruger. No mixing up loads...