Johnw...ski
02-16-2010, 02:47 PM
My new Giraud power case trimmer came in yesterday and I got to try it today. All I can say is WOW.
I have been using a Lyman trimmer to trim cases since I bought it around 1978, it does the job but is a lot of work. I usually chamfer the inside of the neck on my drill press before trimming the case, then trim to length, outside chamfer on the drill press and lightly hand chamfer the inside. I find that a fairly heavy chamfer first reduces the effort of trimming and also eliminates the burr that sometimes forms under the pilot making it hard to remove the cutter from the neck. I still plan to use the Lyman case trimmer for short runs of trimming. The reason for the upgrade is that with the amount of .223 cartridges I have been shooting in NRA High Power Competition trimming cases was getting to be a real bore.
So back to the Giraud case trimmer, first of all it is almost obscenely expensive at around $450 delivered, but extremely well made and a joy to use. I am amazed at how quite it is even when trimming a case to length. The manufacturer advertises being able to trim cases to within .001 of each other and I can say that of the 10 cases I trimmed they were all the same length as measures by a vernier, any variation would have to be within a few ten thousandths of an inch. This is a tool I will enjoy using.
John
http://i280.photobucket.com/albums/kk166/JohnWski/Giraudcasetrimmer.jpg
Here's a picture from the manufacturer.
I have been using a Lyman trimmer to trim cases since I bought it around 1978, it does the job but is a lot of work. I usually chamfer the inside of the neck on my drill press before trimming the case, then trim to length, outside chamfer on the drill press and lightly hand chamfer the inside. I find that a fairly heavy chamfer first reduces the effort of trimming and also eliminates the burr that sometimes forms under the pilot making it hard to remove the cutter from the neck. I still plan to use the Lyman case trimmer for short runs of trimming. The reason for the upgrade is that with the amount of .223 cartridges I have been shooting in NRA High Power Competition trimming cases was getting to be a real bore.
So back to the Giraud case trimmer, first of all it is almost obscenely expensive at around $450 delivered, but extremely well made and a joy to use. I am amazed at how quite it is even when trimming a case to length. The manufacturer advertises being able to trim cases to within .001 of each other and I can say that of the 10 cases I trimmed they were all the same length as measures by a vernier, any variation would have to be within a few ten thousandths of an inch. This is a tool I will enjoy using.
John
http://i280.photobucket.com/albums/kk166/JohnWski/Giraudcasetrimmer.jpg
Here's a picture from the manufacturer.