Is this an indication that the jacket is separating

[Csitt]

I was testing some TNT's this weekend. Was looking at the grouping and noticed the webbing outside the holes. That brown staining
PSA 18" 1:8
A2200 Powder 29.0gr
New Starline brass
COL 2.220
Velocity 2816
75F outside
20220616_222816.jpg

[grayfox]

IS the target plastered up against steel, or a board?
Looks sort of like splatter. But I haven't seen this on any tnt's that I've shot.
My targets are stapled to cardboard...

[Csitt]

The targets are stapled to cardboard. About a foot or so off the ground. No weeds or grass in the way. I did not see this on any other powder loads.

Going to try again this weekend and see if it happens again. Also, plan to back off 0.2 grain increments down to 28 grain. Have a nice velocity drop here that the barrel seems to like.

Chuck S

[Double Naught Spy]

It also looks a bit like tattooing, as in from powder, as from being shot from very close range.

No, the jacket isn't coming apart. You would have penetrating holes and not what looks like burned powder smears. Also, the bullets would not be so stable if the jackets were coming apart.

[Csitt]

This was at 100 yards.

Chuck S

[lazyengineer]

The only time I've ever seen that, was when I puposely popped a bug with my 6.5. I'll see if I can find the picture....

[Csitt]

The only time I've ever seen that, was when I puposely popped a bug with my 6.5. I'll see if I can find the picture....

LE is so good he's shooting bugs.

[kmon]

The only time I've ever seen that, was when I puposely popped a bug with my 6.5. I'll see if I can find the picture....

Bugs can they can make a nice splatter on the target. Flys are more of a challenge but large grasshoppers make a lot bigger splatter.

[Csitt]

I think the campground would be upset with me if I used my grendel to kill the black flies instead of the salt gun.

[65Carcano]

Any chance it could be lubricant/solvent?

[Dt219]

Ima say you smacked a bug

[Klem]

Chuck,

Looks like dirt or a bug. The splatter is below the holes so maybe you edged one as it flew close to the target.

Here's what shooting a March fly looks like. It landed on the target so too good to refuse. 223 out of an F-Class gun shooting prone from a rest. March flies are big, about the same size as a bee.
Fly - Copy.jpg

[grayfox]

Only good march fly (as with any fly!) is a dead one.
lol!!

[Csitt]

I think all you bug killers are correct. We have May flies here, not saying it was one of those. I just never seen that. Was worried I was pushing too much Powder.

Thanks,
Chuck S.

[CJW]