Neck turning “ridge”

[Frankm]

When I turn brass for my 22 GT , it’s a .250 tight neck, I cut a couple thousandths into the shoulder to help with minimizing or eliminating “donuts”. ( I use 6 GT brass necked down as I have a number of cases)

The question, does anyone have a step/simple solution on removing the slight edge in the shoulder? You can feel it with a fingernail. I don’t have a tapered cutter and thus it s just the way it is. Been thinking about a small rod wrapped with Emory cloth and just doing a light spin against the neck/shoulder ….? What thoughts/advice are out there?

 

[6BRA]

I cut a full blade width into shoulder. Occasionally feel with fingernail. 0000 steel wool and 2 firings it will be gone. Quit worrying about on my end.

 

[bozo699]

Once you fire it, it will smooth out.
Wayne

 

[natdscott]

Once you fire it, it will smooth out.
Wayne

Lots of things iron out under 60,000 lbs, don't they?

 

[ruthless11]

When I turn brass for my 22 GT , it’s a .250 tight neck, I cut a couple thousandths into the shoulder to help with minimizing or eliminating “donuts”. ( I use 6 GT brass necked down as I have a number of cases)

The question, does anyone have a step/simple solution on removing the slight edge in the shoulder? You can feel it with a fingernail. I don’t have a tapered cutter and thus it s just the way it is. Been thinking about a small rod wrapped with Emory cloth and just doing a light spin against the neck/shoulder ….? What thoughts/advice are out there?

are you using a bushing or a fl sizing die

 

[AlNyhus]

Using a cutter with more angle than the case shoulder prevents the ridge line. Once you have it, smoothing it a bit can't hurt.

 

[243winxb]

I cut a couple thousandths into the shoulder

I don’t have a tapered cutter and thus it s just the way it is

Then when the necks come off, you will not be surprised.

https://www.accurateshooter.com/technical-articles/neck-turning-tool-cutting-tips/

 

[ricco1949]

I also cut at or near full blade width into shoulder. I grind cutter at 1° more than shoulder to help blend edge.

Even so a slight edge forms on some pieces. Not to worry...they iron out.

 

[Frankm]

F/L die. Have used friends bushing die and still have same ridge…. If I shorten depth of cut then I worry about donut formation. Running 88 gr Eldm and full diameter base of bullet is just at junction of shoulder/neck.

 

[JEFFPPC]

F/L die. Have used friends bushing die and still have same ridge…. If I shorten depth of cut then I worry about donut formation. Running 88 gr Eldm and full diameter base of bullet is just at junction of shoulder/neck.

Get it throated to fit your bullet. Simple.

 

[Frankm]

We did throat it for that bullet… wanted max bullet pull and ability to “chase the lands” …. Could we have added an extra .010 or .015 to reamer; sure but not way we went. Donuts are possibly not going to happen but trying to be conservative.

I could also shoot a shorter bullet, like Eldm 80, Berger, etc but want to keep .546 G1 BC of 88 …. Decisions, decisions !!

Like everyone else trying to always build a better mousetrap, haha

 

[jackieschmidt]

I agree with @JEFFPPC. The best fix is to use a throater so the straight portion of the bullet shank seats away from the neck shoulder junction.

Besides, the all dreaded Donut is a result of sizing the case, not neck turning. If you size a case enough times, a donut will form despite your best efforts.

That is why you make it a non issue by having the proper throat for your bullet of choice.

 

[boltfluter]

This is a non issue, just shoot it. If it drives you crazy get a cutter ground. Or spin the case and polish with some 600 grit sand paper. Done and forget about it.