Lapua 6.5x284 necked up to 7mm—donut

[BIGMAC]

opinion on using the Forster inside neck reamer to get ride of the donut.
Do you have to order a special reamer and have it grinded to match your brass. Thanks

 

[lawrence97]

The best option is to not seat the bullet that far down !

 

[ballisticdaddy]

K&M carbide mandrel or just seat the bullet above the donut
http://kmshooting.com/media/catalog...6e5fb8d27136e95/c/r/crtal-xx_780x520_10_1.jpg

 

[ShootDots]

If you have a B-A-D case of doughnuts, K and M tool sells "Mandrel Reamers" that fit your cutter mandrel recess in your neck turning tool. The mandrels have cutting edges on them to ream out the doughnut.

 

[Scott Harris]

opinion on using the Forster inside neck reamer to get ride of the donut.
Do you have to order a special reamer and have it grinded to match your brass. Thanks

Do not do this. Just seat above the donut at least .030 as Lawrence says. Our no-turn chambers shoot just as flat as turned brass chambers. So, clearly, the donut does not matter if your bullet is not seated into it. If you want to get rid of the donut, just turn the brass with a cutter that matches your shoulder angle.

 

[BIGMAC]

Do not do this. Just seat above the donut at least .030 as Lawrence says. Our no-turn chambers shoot just as flat as turned brass chambers. So, clearly, the donut does not matter if your bullet is not seated into it. If you want to get rid of the donut, just turn the brass with a cutter that matches your shoulder angle.

Do not do this. Just seat above the donut at least .030 as Lawrence says. Our no-turn chambers shoot just as flat as turned brass chambers. So, clearly, the donut does not matter if your bullet is not seated into it. If you want to get rid of the donut, just turn the brass with a cutter that matches your shoulder angle.

My 284 Winchester and 284 Shehane reamer has a .188 fb, I guess I have to sent my readers back to ptg to have it regained to maybe a .200-.220 fb??

 

[ballisticdaddy]

My 284 Winchester and 284 Shehane reamer has a .188 fb, I guess I have to sent my readers back to ptg to have it regained to maybe a 200-220 fb??

I have a .284 Win chambered for the Berger 180 hybrids with .230 freebore

 

[BIGMAC]

I have a .284 Win chambered for the Berger 180 hybrids with .230 freebore

Do you have trouble setting the 180 Hybrid above the donut? Is the .230 fb working for you??

 

[ballisticdaddy]

Do you have trouble setting the 180 Hybrid above the donut? Is the .230 fb working for you??

No sir when having the chamber cut I furnished my smith a dummy round with the boattail just above the neck/shoulder junction making the COAL in my rifle 3.238 with a jump of about .013 and it shoots very well.

 

[Dusty Stevens]

If you have a B-A-D case of doughnuts, K and M tool sells "Mandrel Reamers" that fit your cutter mandrel recess in your neck turning tool. The mandrels have cutting edges on them to ream out the doughnut.

It also threads the inside of your necks for less surface area