Trimming .223?

[AZGUNNER]

I have checked alot of my once fired brass and they are all smaller then the oal that the guide on my trimmer lists. What length are you trimming them at I want to trim them first then size if at all possible.

[DougCarden]

Try resizing a case and check the OAL. You will trim them down to 1.750 if I remember correctly from the Sierra manual.

Hope that helps,

DougC

[redmercury2]

size first, then trim to 1.75

[AZGUNNER]

Thanks guys

[bigsaxdog]

that dillon powered trimmer, sizer gizmo is hard to beat! especially for high-volume reloading, like game .223 stuff....

[bigtex84]

I trim my brass to 1.745 so I wont have to trim after another 4 loads. I guess if you could trim then size if they are shorter than 1.75 before you size. If this is a match gun however I would stick with the standard 1.75

[GentlemanJim]

I size then trim to 1.746

2.236 COL...no real crimp...just kissing the case mouth

This has given me the most consistant results in both my 18" barrels.

Common to get .5 MOA with 55gr FMJBT

I seem to have missplaced my data on powders but was last using 25.* gr of TAC

Jim

[plinker625]

The best trimmer is a Giraud! It has no peers!

[fastshooter03]

The max case length is listed as 1.760" so your chamber is probably at least that long. There are inserts you can buy to check what your chamber is using a trimmed way back piece of brass. I like to use longer brass trimmed to about 1.755". The problem is finding good brass this long in large quantites.

The main concern is to have all your brass the same length no matter how long that may be. If you want to experiment make some batches of different trim lengths but the same load and seating depth and see how they shoot. If there is no difference, trim so that all your brass will clean up.

Nick