Knurling Slugs?

[LostinTejas]

I have a pile of slugs, and of late I've noticed they get a bit of yaw in flight. Some do and some don't, enough to think it is a seating problem more than anything else, and using a single load block seems to eliminate almost all of it vs shooting from a magazine.

So other than dedication to the single stage load block and sucking it up, I was wondering if I could run them a pass under a file or the like to give a little something?

Not asking if it would be enough, because that isn't really doable over the interwebs, but would it be a possible solution? Just wasting time? Need to just sell them or melt them down and make 45 slugs out of them?

 

[JimNM]

To what end? Internal vs. external ballistics? Are you looking for better engagement on the rifling? Or are you looking to add drag to the projo while in flight to somehow create an airfoil effect? 

 

[LostinTejas]

Yes, looking to get a little better rifling engagement. The recovered slugs have rifling marks for maybe a mm in the aft. It seems to be enough to do the job, but trying to get a better seat. Just trying to see if there might be something to do.

NSA 33.5 slugs in .25 cal. Pretty conical in that weight, and I may just have gone too light to get a good straight seating for that design.

 

[brian_null]

You might want to look into powder coating your slugs.

 

[JimNM]

Or going for a longer shape. It sounds like your point of contact is too short to get good stabilization. The pellet uses the edge of the head and edge of the tail as a two-point stabilization. It may be a design issue for your slugs.

 

[LostinTejas]

Or going for a longer shape. It sounds like your point of contact is too short to get good stabilization. The pellet uses the edge of the head and edge of the tail as a two-point stabilization. It may be a design issue for your slugs.

Yea, that is what I was afraid of. I guess I can still try it for a few. It won't cost anything and I can find out if it fails miserably in pretty short order.

I may have a pile of these for sale or trade soon.