Trim length

[Link]

1st Yup did a search
My question is only - how much difference in accuracy does trim length make.

ty Don

 

[old_heli_logger]

When properly trimmed, your brass should be squared to the body. This will allow your bullet to release from the mouth of your brass at the exact same time and should help with accuracy....I think, haha

 

[Straightshooter1]

1st Yup did a search
My question is only - how much difference in accuracy does trim length make.

ty Don

How much difference just depends. It's about the bullet release and timing of the blowby as the bullet is being released.

 

[rwj]

I recall Jack Neary stating in an interview (I believe it was Eric Cortina’s Believe the Target podcast) that he could see the difference that 0.010” variation in trim length created.

It would not be hard to create varying trim lengths to determine if the variation shifts the POI and/or group size in your rifles.

 

[Link]

I recall Jack Neary stating in an interview (I believe it was Eric Cortrina’s Believe the Target podcast) that he could see the difference that 0.010” variation in trim length created.

It would not be hard to create varying trim lengths to determine if the variation shifts the POI and/or group size in your rifles.

Wow .010 is a lot. Be pretty easy to maintain that.
ty Don

 

[jelenko]

Remember - there's benchrest accuracy and there's accuracy for other disciplines/activities.
Jack being able to see the difference may not make any difference to what you need/want to do.
I guarantee the amount of difference is way less than 1/10 of an MOA out to 300 yards.

 

[K22]

Remember - there's benchrest accuracy and there's accuracy for other disciplines/activities.
Jack being able to see the difference may not make any difference to what you need/want to do.
I guarantee the amount of difference is way less than 1/10 of an MOA out to 300 yards.

Spot on!

When I see these type questions asked on the forum, my first reaction is, what is your shooting discipline. Chasing a few .1's in group size may not be worth the time, cost, and bench time for your discipline unless you like to experiment those kinds of issues.