trimming cases and the Garaud tri way trimmer ?
- Thread starter rebs
- Start date
RegionRat
Gold $$ Contributor
The answer is the same for bolt guns, semi-autos, levers, pumps, etc...
If the case neck goes to the point of interference with the rifling, there is a possibility of getting unintentional high pressure. Think of it like getting a wedge locked bullet because the case neck can't release the bullet on ignition. Even if that is a momentary problem, the dynamics of that pressure pulse might be serious.
The overall case trim length isn't a hard dimension to manage. There are times when you want to hold each case dimension very tightly in order to minimize variables that harm precision and accuracy, but the trim length is not on the top of that learning curve and it is easy to manage.
The Giraud tools are are very capable. If the shoulder datums are held tightly during your case sizing operations, then trim length off the shoulder will also be very nice. When the adjustments match your case diameter, those chamfers are nice and save a ton of time.
I shoot some XTC and MR with 223, so I leave one Giraud machine set up all the time and will give a good review of their tools. For reference, I have not counted all the other ones I own, but I also have Wislon, Forester, WFT, RCBS, Frankford, etc, etc...
For small batch development work, I like the Forster. For standardized 308, 6, and 223, I have the Giraud stuff dialed in and it makes tri-trimming a breeze.
If the case neck goes to the point of interference with the rifling, there is a possibility of getting unintentional high pressure. Think of it like getting a wedge locked bullet because the case neck can't release the bullet on ignition. Even if that is a momentary problem, the dynamics of that pressure pulse might be serious.
The overall case trim length isn't a hard dimension to manage. There are times when you want to hold each case dimension very tightly in order to minimize variables that harm precision and accuracy, but the trim length is not on the top of that learning curve and it is easy to manage.
The Giraud tools are are very capable. If the shoulder datums are held tightly during your case sizing operations, then trim length off the shoulder will also be very nice. When the adjustments match your case diameter, those chamfers are nice and save a ton of time.
I shoot some XTC and MR with 223, so I leave one Giraud machine set up all the time and will give a good review of their tools. For reference, I have not counted all the other ones I own, but I also have Wislon, Forester, WFT, RCBS, Frankford, etc, etc...
For small batch development work, I like the Forster. For standardized 308, 6, and 223, I have the Giraud stuff dialed in and it makes tri-trimming a breeze.
If you process a lot of 223 brass, it's well worth the money for the one caliber. I've got 4 223's, so getting the trimming/chamfering/de-burr done in one handling is a good thing IMO. You will get variances in length if your sizing is not consistent, but you can adjust it if you want, but I've not noticed any issues for my loads. I load for pdogs, not competition.
Am not sure I understand the question since Garaud had a bench top trimmer and a trimmer that mounts in the chuck of a drill that's called a Tri Way Trimmer. Both do the same thing. The difference being for the Tri Way Trimmer, you need one for each caliber, but with the bench top model you get various caliber inserts. They both trim the same way and do a great job. But the trim length is determined off of the shoulder, you need to be sure the shoulders are bumped consistently to get a consistent COAL. Otherwise, they make very fast work for a lot of brass.
Good. . . that's what I use. And like I said, it's fast and easy to use. I use mine chucked in an old corded variable speed drill turning at about 1000 rpm and use it facing up towards the sealing so that no trim ships get inside the case. If it's used on it's side, some of the brass that's removed can easily get inside the case. I leaned too, when I use mine to have a light non-slip glove on the hand that's used to insert the cases into the trimmer. Sometime, particularly if the necks are somewhat long and am feeding rather fast, they stick in the cutter and spin until you grab hold and pull it out. It's not a big deal, but a non-slip glove pretty much eliminates this problem. And lastly, the best time to do the trimming with this tool is as the very last step in your case prepping. You'll wind up with cases with very consistent dimensions as well and very nicely done chamfering and deburring. . . ready for loading.
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