How a moderator affects your zero or POI

[cavedweller]

This post is more of an FYI for the newer or who hasn't learned it.

Of recent, i have learned how to click (or use the turrets for something other than zeroing my scopes)

At home I have to shoot with moderators.

Of note - the average moderator hung off the end of a barrel (not a shroud) requires 4-5 more upward clicks than without any moderator. This observation included stout barrels like my HMX1000 and my Steyr 110 and my TM1000 pistols.

This is a big deal if you are shooting HFT or hunter field target with a pistol or any situation or law that requires you to remove a moderator.

Moderators attached via the shroud don't seem to cause any deviation or drop in POI as no weight is actually placed on the barrel.

When i attached a fairly lightweight weihrauch moderator directly to my Thomas barrel i had to add 4 upward clicks to my zero at 30 yards. But when i added a heavier Zero DB moderator to my Thomas using the shroud, i had to go back down 4 clicks at 30 yards.

This Also affected my short little TM1000 pistol barrels same # of clicks or changes in elevation were noted for the Weihrauch.

 

[Frank in Fairfield]

I only have the one PCP.
You bought at least one of mine from Cameron when I sold everything.
The PRod which I sometimes use with a TKO moderator.
I found that I cannot tighten it too much on the barrel as the POI shifts a little.
Maybe the pellets are lightly touching the moderator, I don’t know.
When the shift happens, I un-screw the moderator a bit and the POI returns to the proper location

 

[357cal]

A few weeks ago, I was wondering how a moderator effects POI on my setup. Texan 308 and Yokozuna were about 10 fps slower with it but, I feel it was justified by taking up some of the sharp crack and being able to tighten up my groups. The only change was the drop in fps.

 

[Gerry52]

On either my FX Royale 500 or Boss my holdover is compensated 2 full mildots when using a mod (DFL Ronin). Quietness has its price. Oddly enough, I find both guns to be infinitesimally more accurate, not less, with the mod. Both guns have a "floating" barrel. Unsupported after connection to the block (no barrel bands).

 

[6gun]

It's a really big deal on my 700mm impact too. If I use my air stripper it shifts poi up a lot and is rimfire loud. I use donnyfl yokozuna and Ryu on the guns that are sensitive and just removing 1 baffle section can change how the gun is behaving completely. It's not just weight, it's the air on muzzle exit too. It's very nuanced.

 

[Trucker3573]

I know my alpha wolf changes poi with a moderator. Rather positive it shoots lower but I really don’t pay attention that much. As long as groups don’t suffer with it on wherever it shifts …doesn’t really bother me

 

[Troy Bakel]

Check out "Ballistic High-Speed" on YouTube.