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Joined: Feb 2010
Posts: 17,927
Campfire Ranger
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Campfire Ranger
Joined: Feb 2010
Posts: 17,927 |
Boltface to ogive is good. Base of a random piece of brass to ogive not so much.
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Joined: Oct 2002
Posts: 96,121 Likes: 1
Campfire Oracle
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Campfire Oracle
Joined: Oct 2002
Posts: 96,121 Likes: 1 |
I don't own any 'fancy' tools. Do it with a case and a bullet.
"Dear Lord, save me from Your followers"
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Joined: Aug 2002
Posts: 19,108
Campfire Ranger
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Campfire Ranger
Joined: Aug 2002
Posts: 19,108 |
Boltface to ogive is good. Base of a random piece of brass to ogive not so much. My feelings exactly. Only thing that I do different than the split neck picture is that I split a little further down the shoulder. East to adjust with your fingers, the amount of pressure you are putting on the bullet to keep it from sliding or make it slide easier. miles
Look out for number 1, don't step in number 2.
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Joined: Oct 2003
Posts: 4,216
Campfire Tracker
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Campfire Tracker
Joined: Oct 2003
Posts: 4,216 |
For years I used a piece of 1/4" wooden dowel, a sharp pencil and a set of calipers to measure distance to the lands. Close the bolt on the rifle with empty chamber, drop the dowel down and make a mark at the muzzle. Next, drop your bullet (not loaded ammo!) in the chamber and ensure it's seated using a pencil. You have to hold the bullet in place. Next, put the dowel in the barrel against the bullet tip and make a second mark. Measure between the two and that is the max overall length for that bullet.
Obviously there are lots of ways to make errors using this method. Like most things in life, attention to detail will help yield consistent results.
I will say that I bought a sinclair tool several years ago to do these measurements and it works pretty well. Does it the same way and from the breech. But I got by using the dowel for many years and for hunting rifles, it worked fine.
Regards,
Tom
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Joined: Oct 2009
Posts: 1,742
Campfire Regular
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Campfire Regular
Joined: Oct 2009
Posts: 1,742 |
I've had best results with split case method. The Hornady tool gave varied results since the cases are not sized and don't necessarily chamber the same as a case with the bolt closed on it. I had 2 Hornady/Stoney Point cases that were slightly oversized and didn't fully chamber. This gave dangerously long col measurements. Split case is dead simple and quicker IME.
Last edited by Horseman; 10/07/15.
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Joined: Sep 2003
Posts: 1,958
Campfire Regular
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Campfire Regular
Joined: Sep 2003
Posts: 1,958 |
For years I used a piece of 1/4" wooden dowel, a sharp pencil and a set of calipers to measure distance to the lands. Close the bolt on the rifle with empty chamber, drop the dowel down and make a mark at the muzzle. Next, drop your bullet (not loaded ammo!) in the chamber and ensure it's seated using a pencil. You have to hold the bullet in place. Next, put the dowel in the barrel against the bullet tip and make a second mark. Measure between the two and that is the max overall length for that bullet. This! The only difference in my technique is that I use a cleaning rod with a caliber size patch tip on it. Drop the cleaning rod to the closed bolt face and wrap a piece of masking tape around the rod exactly at the muzzle. Then put the bullet against the rifling. I put pressure on the pencil to hold the bullet on the rifling with one hand and push against the nose of the bullet with the cleaning rod with the other. That way I can move the bullet back and forth to position it exactly where it engraves. Then I let the cleaning rod rest in the bore and measure from the muzzle to the masking tape. That is the max COL.
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Joined: Aug 2002
Posts: 19,108
Campfire Ranger
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Campfire Ranger
Joined: Aug 2002
Posts: 19,108 |
The only difference in my technique is that I use a cleaning rod with a caliber size patch tip on it. Drop the cleaning rod to the closed bolt face and wrap a piece of masking tape around the rod exactly at the muzzle. Then put the bullet against the rifling. I put pressure on the pencil to hold the bullet on the rifling with one hand and push against the nose of the bullet with the cleaning rod with the other. That way I can move the bullet back and forth to position it exactly where it engraves. Then I let the cleaning rod rest in the bore and measure from the muzzle to the masking tape. That is the max COL. Not saying that this will not work, but there are lots of steps that could open the door for things to go wrong. A slip case only has a couple of things. One is not enough tension so that the bullet is loose and will not stay put. The other is the case is too tight on the bullet and it is forced tightly into the lands and tries to stick there and pulls out slightly when removing the case. This will leave noticeable marks on the bullet base. The tension is easily adjustable to prevent both of these things from happening. miles
Look out for number 1, don't step in number 2.
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Joined: Nov 2007
Posts: 2,984
Campfire Regular
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Campfire Regular
Joined: Nov 2007
Posts: 2,984 |
Size, split, insert bullet, chamber, measure with comparator, seat to the measurement. I call that a kiss, anything longer is jammed, (0.002, 0.003, etc). Easy peasy..... That's the method I use.
Kelly
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Joined: Dec 2006
Posts: 5,919
Campfire Tracker
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Campfire Tracker
Joined: Dec 2006
Posts: 5,919 |
Size, split, insert bullet, chamber, measure with comparator, seat to the measurement. I call that a kiss, anything longer is jammed, (0.002, 0.003, etc). Easy peasy..... That's the method I use. Same here
When I die I hope I don't start voting democrat.
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Joined: Feb 2010
Posts: 17,927
Campfire Ranger
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Campfire Ranger
Joined: Feb 2010
Posts: 17,927 |
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