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Reloading Techniques For Reloading


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Help... I'm completely baffled at this point.

 
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  #1  
Old 03-27-2013, 11:12 PM
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Join Date: Feb 2012
Posts: 15
Help... I'm completely baffled at this point.

I reload with a Lee Hand Press. I started about 9 months ago, and just wanted to get my feet wet reloading so I went in cheap. Now I'm about ready to smash everything on my reloading bench, and I think it's a result of my equipment... but I'm not sure.

I have had my bullet seating die locked at 3.400 OAL for the past 7 months or so. Tonight I go out there, put 190 gr SMK on top of 73g of RL22, and the first four lengths are:

3.312
3.321
3.309
3.308

I remeasure every round. I instantly get pissed because its a simple mechanical device, and I don't understand where there is any room for error with regards to this. I try again with new rounds.

3.318
3.318
3.316
3.327
3.327
3.319

This is all with the same press and seating die mind you. What in the blue blazes is going on here? Thanks guys.
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  #2  
Old 03-27-2013, 11:30 PM
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Join Date: May 2012
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Re: Help... I'm completely baffled at this point.

The length at the tip often varies a bit with bullets; it doesn't really matter as long as the length at the ogive is the same on every round. What is your accuracy like?? If it's good your hanging up on a non problem.
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  #3  
Old 03-27-2013, 11:39 PM
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Join Date: Jan 2004
Location: Blackfoot, Idaho
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Re: Help... I'm completely baffled at this point.

I agree with Lefty.....

Not familiar with the Lee tools but would assume that that the bullet seater would touch the bullet in a ring below the point. However, it seems that the seater presses directly on the tip. That's a bummer as the base-to-ogive length will vary with how the points are formed. Some bullets are pretty poorly pointed.

The point, in and of itself, doesn't make "that" much difference in shootability. However, varying base to ogive length usually is very noticeable in group side and shot to shot velocity variations.

When shooting less than 500-600 yards if it groups well @ 100 don't worry about it.
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  #4  
Old 03-27-2013, 11:52 PM
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Join Date: Feb 2012
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Re: Help... I'm completely baffled at this point.

Well, my accuracy with these 190 smks is embarrassing. I can't seem to make them work, and I'm just about ready to give it up (300 win mag). 180 gr Scirocco IIs are a best of .833 at 200 yards and 168 VLDs are right on a moa at 100.

Ok, so I am able to accept that this may be a non-issue (for you non-concrete sequential folks), but how is it even possible for me to produce 3.400 ammo last week, and then tonight have all my rounds SHORTER than that with the same die?

With the seating die that I have the tip of the bullet impacts the inside of the die. Therefore, it makes sense to me that I have 3.400 inches of space remaining when the ram is completely up.

My head hurts. Golf I can do all day, the physics in it all makes sense. This reloading stuff is going to have me on medication before too long.
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  #5  
Old 03-28-2013, 12:33 AM
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Re: Help... I'm completely baffled at this point.

Quote:
Originally Posted by skip4502 View Post
Well, my accuracy with these 190 smks is embarrassing. I can't seem to make them work, and I'm just about ready to give it up (300 win mag). 180 gr Scirocco IIs are a best of .833 at 200 yards and 168 VLDs are right on a moa at 100.

Ok, so I am able to accept that this may be a non-issue (for you non-concrete sequential folks), but how is it even possible for me to produce 3.400 ammo last week, and then tonight have all my rounds SHORTER than that with the same die?

With the seating die that I have the tip of the bullet impacts the inside of the die. Therefore, it makes sense to me that I have 3.400 inches of space remaining when the ram is completely up.

My head hurts. Golf I can do all day, the physics in it all makes sense. This reloading stuff is going to have me on medication before too long.
First of all you have a good load with the other bullet (the swift Scirocco) and some barrels seem to be bullet brand finikey, so you are doing fine. Secondly, you need to either get a different seater plug or only use bullets that fit that plug without the tip touching.

Are you using a different lot of bullets this loading session or different brass? Either could cause this difference between this week and last. A simple die bump could also... I use a pedro to set my dies and then reset to compensate for any brass springback.
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  #6  
Old 03-28-2013, 08:17 AM
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Join Date: Jan 2013
Location: Meridian, Idaho
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Re: Help... I'm completely baffled at this point.

I had a minor issue that was solved by taking the seater shaft and plug out to inspect the hole to which the tip of the bullet is to extend into. The hold had some machining crap from the factory in there and some bullets were touching this stuff. I cleaned it out, no more issue.

Another thing, I use a concentricity guage to true all my loaded rounds. I noticed that if I seat the bullet about 25% and turn it 180 degrees and then finish the seating the bullets are aligned within .003. I still finish them to .001 or less. Just a thought, regarding bullet alignment.
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  #7  
Old 03-28-2013, 09:57 AM
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Join Date: Oct 2007
Location: Mountians of SW NC, near Asheville
Posts: 1,596
Re: Help... I'm completely baffled at this point.

"...how is it even possible for me to produce 3.400 ammo last week, and then tonight have all my rounds SHORTER than that with the same die?"


Well, forgetting the physics, lets think about this. You're working with the same press; same dies; same shell holder; same cases but new bullets, right? Now, lets see if we can figger out what's changed ....

No rifle cares where the tip of a bullet hangs in space anyway. It's jump to the lands that matters and that has nothing useful to do with a book OAL.
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