Flash Hole Reamer Recommendation Please

[Andy]

For Large Rifle primers in a variety of cartridges, i.e. a universal reamer.

 

[cycbb486]

Are you talking

primer pocket or flash hole? Regardless, the K&M flash hole debur tool is the best I have used. I have a K&M and Sinclair primer pocket uniformer and either will do.

 

[Boomer]

I use Sinclairs and like it. Mine has the tapered collar so it can be used in a variety of cartridges of different calibers, rather than the pilot that seems to limit the tool to one cartridge.

http://www.sinclairintl.com/cgi-bin/category.cgi?category=RECPDT&item=DB-1320&type=store

 

[Andy]

Thanks. I have heard good things about them.

Where did you buy yours - mail order from Sinclairs, or elsewhere in Canada?

I use Sinclairs and like it. Mine has the tapered collar so it can be used in a variety of cartridges of different calibers, rather than the pilot that seems to limit the tool to one cartridge.

http://www.sinclairintl.com/cgi-bin/category.cgi?category=RECPDT&item=DB-1320&type=store

 

[The Baron]

I also have a Sinclair and have had several years of good use from it and counting. I ordered mine directly from Sinclair.

 

[Silverado]

I use the Lyman. It also has the tapered collar which is adjusted by a set screw. I bought it at Russells IIRC.

 

[Ganderite]

I once ran an extensive test of primer pocket and falsh hole tweaking.

20 rounds no tweaking.
20 rounds deburring flash hole
20 rounds deburring and flash hole uniforming.

Test was in 308 Winchester cases and involved 7 different powders.

All ammo was fired in a SAAMI pressure gun for velocity and pressure. Attention was paid to the Extreme Spread of both and the SD.

For all but one powder, the deburring improved the SD.

And I think in almost lots the full treatment made the SD worse. I am on vacation and don't have my files with me.