Le Wilson vs little crows worlds best trimmer

[CT10ring]

Some trimmers base their measurement off the case head and some off the shoulder datum. Isn't the most important measurement, to get the best trim length, from the shoulder datum of the chamber to the barrel ogive? When the firing pin hits the primer it drives the case forward until the case shoulder stops at the shoulder portion of the chamber. Once the cartridge has stopped the important part is that the neck does not hit the rifling. Hence, the need for trimming.

I use an RCBS trimmer with the paddle handle and it works great, and it's fast. But it does occasionally cut undersize by .004-.005". There are a number of trimmers that use the case shoulder datum as the reference. Seems that this would be the best measurement to use for consistency.

I may have my thinking wrong here and if so please correct me.

Some trimmers base their measurement off the case head and some off the shoulder datum. Isn't the most important measurement, to get the best trim length, from the shoulder datum of the chamber to the barrel ogive? When the firing pin hits the primer it drives the case forward until the case shoulder stops at the shoulder portion of the chamber. Once the cartridge has stopped the important part is that the neck does not hit the rifling. Hence, the need for trimming.

I use an RCBS trimmer with the paddle handle and it works great, and it's fast. But it does occasionally cut undersize by .004-.005". There are a number of trimmers that use the case shoulder datum as the reference. Seems that this would be the best measurement to use for consistency.

I may have my thinking wrong here and if so please correct me.

** The cartridge neck will never engage the rifling.
** All cartridge dimensions are based on case head to end of neck (OAL) dimension, so far as I can tell.
** If one undersizes the case OAL by .004" - it's OK. Take a look at your micrometer blades set at .004" It's...nothing.

 

[Dusty Stevens]

I use the pma

 

[Texas10]

I have both the WFT and the WCT (Worlds Cheapest Trimmer). They both work the same, using the shoulder as a datum. I chuck one up in my drill press and can go through a box of 100 cases about as fast as I can feed them into the tool.
I recently needed a trimmer in 338 LM, so I called the WCT factory and sent them two cases that were sized. He made a trimmer for me and now stocks that model.

 

[dickn52]

I have 2 Little Crows. 6.5 CM and 5.56. Both work great.

 

[Delfuego]

I have owned the WFT and the Giraud Tri-Way, sold them both.
I think the Trim-It is the best execution of that type of power trimmer. Check them out, they are even having a sale right now.
https://www.blackwidowshooters.com/

 

[Dusty Stevens]

I have owned the WFT and the Giraud Tri-Way, sold them both.
I think the Trim-It is the best execution of that type of power trimmer. Check them out, they are even having a sale right now.
https://www.blackwidowshooters.com/

I recognize that shooting rest
But the trimmer looks nice for sure

 

[Delfuego]

I recognize that shooting rest

I bet that will hold one heavy ass rifle!

 

[fguffey]

There are a number of trimmers that use the case shoulder datum as the reference. Seems that this would be the best measurement to use for consistency.

I may have my thinking wrong here and if so please correct me.

When setting the case up to trim off of the shoulder the reloader has already sized the case if all claims by reloaders are true. I will not assume all reloaders can adjust the die when sizing cases for case length from the shoulder to the case head. 'ONE MORE TIME!' I have an EK 30/06 chamber that is .016" longer than a full length/minimum sized case meaning when I fire over the counter new in the box factory ammo in that rifle there is .016" clearance between the shoulder of the case and shoulder of the chamber. For those that can keep up the chamber is .011" longer than a go-go-gage length chamber.

"QUESTION" ??? What do I do with the .011" when I am trimming for case length from the end of the neck to the case head?

F. Guffey

 

[muleman69]

""The informed reloader sizes the case to off set the length of the chamber from the shoulder to the bolt face and is only concerned with the length of the neck from the datum to the end of the neck."

I think I need a drink.........lol

 

[dickn52]

When setting the case up to trim off of the shoulder the reloader has already sized the case if all claims by reloaders are true. I will not assume all reloaders can adjust the die when sizing cases for case length from the shoulder to the case head. 'ONE MORE TIME!' I have an EK 30/06 chamber that is .016" longer than a full length/minimum sized case meaning when I fire over the counter new in the box factory ammo in that rifle there is .016" clearance between the shoulder of the case and shoulder of the chamber. For those that can keep up the chamber is .011" longer than a go-go-gage length chamber.

"QUESTION" ??? What do I do with the .011" when I am trimming for case length from the end of the neck to the case head?

F. Guffey

You're a smart guy. Everyone will agree I think....but you're also a condescending feller. I'll try to keep up if you will.

 

[Richard Coody]

When setting the case up to trim off of the shoulder the reloader has already sized the case if all claims by reloaders are true. I will not assume all reloaders can adjust the die when sizing cases for case length from the shoulder to the case head. 'ONE MORE TIME!' I have an EK 30/06 chamber that is .016" longer than a full length/minimum sized case meaning when I fire over the counter new in the box factory ammo in that rifle there is .016" clearance between the shoulder of the case and shoulder of the chamber. For those that can keep up the chamber is .011" longer than a go-go-gage length chamber.

"QUESTION" ??? What do I do with the .011" when I am trimming for case length from the end of the neck to the case head?

F. Guffey

well i certainly wouldn't worry about trimming unfired brass. that neck will probably quite a bit shorter after firing.

how many firings till fully fireformed?

do you have a chamber cast where you can tell how long the chamber neck is? you might not ever have to trim that brass.

 

[Delfuego]

"QUESTION" ??? What do I do with the .011" when I am trimming for case length from the end of the neck to the case head?

Put it in the junk drawer next to your dikfer.

 

[WillyTP]

For those that can keep up the chamber is .011" longer than a go-go-gage length chamber.

"QUESTION" ??? What do I do with the .011" when I am trimming for case length from the end of the neck to the case head?

F. Guffey

My question for you. What’s a go-go-gage.......is it something else I need to buy?

 

[Dusty Stevens]

My question for you. What’s a go-go-gage.......is it something else I need to buy?

 

[Mikemci]

"QUESTION" ??? What do I do with the .011" when I am trimming for case length from the end of the neck to the case head?

I am the ONLY reloader who knows the answer to this question.
But I won't tell you.

 

[Richard Coody]

well i certainly wouldn't worry about trimming unfired brass. that neck will probably quite a bit shorter after firing.

how many firings till fully fireformed?

do you have a chamber cast where you can tell how long the chamber neck is? you might not ever have to trim that brass.

my answer. what is yours

 

[alinwa]

"QUESTION" ??? What do I do with the .011" when I am trimming for case length from the end of the neck to the case head?

F. Guffey

hold a bris?

 

[Eddie Harren]

"What do I do with the .011" when I am trimming for case length from the end of the neck to the case head?"-- fguffey

Put it in the box with those f-ing datums I ordered and never got!

 

[TerryH]

I have owned the WFT and the Giraud Tri-Way, sold them both.
I think the Trim-It is the best execution of that type of power trimmer. Check them out, they are even having a sale right now.
https://www.blackwidowshooters.com/

I realize these are not what the OP is asking about so I'll apologize up front but in my humble opinion they are worth a further look. I have the newest alliteration of the Trim-it II and the Giraud Tri-way. Both do the same thing in the same way. The cutters appear to be the same. Both perform well for me. Very accurate and repeatable. Perhaps I'm just lazy but both of these trim, de-burr and chamfer in a single operation. I just got the Trim-it a couple of weeks ago and am quite impressed with it. The micro-adjustment feature is very nice and much simpler to get the trim to length set vs the Giraud. The newer Trim-it II has a lexan shield to prevent the chips from flying all over similar to the Giraud which is a nice addition. The Trim-It II also has interchangeable caliber inserts for $20 each where the Giraud is caliber specific.



A little video I did if anyone is interested...

 

[fguffey]

hold a bris?

If you do not know simply say; "I do not know". When a reloaders chooses to use a trimmer that sets up on the shoulder of the case he should understand when measuring the length of the case from the end of the neck to the case head the measurement includes the head space/length of the chamber from the shoulder to the bolt face.

When I measure the length of the case I add the .011" if I am measuring from the end of the neck to the case head. I could ask how a reloader is expected to measure the two different length of a case but that would be cruel.

F. Guffey