The Firing Line Forums - View Single Post - Leakage -- Winchester 357Mag brass/Fed Small Pistol Primers

mehavey · May 8, 2012, 11:48 AM

In working up loads for a `92 Winchester rifle in 357, I noticed my first (in 45 years) sooty primer "leakage"
around the circumference of the Fed Small Pistol primers in brand new Winchester brass.

Pressures are not [suposedly] max'd using 14-15gr Lil'Gun under a BearTooth185CastRNFP/GasCheck'd/OAL=1.575",
and primers look normal otherwise. Oehler-chrono'd velocities are consistent with shooters using this combination
/listed speeds on the Cast Boolits forum.

I have noticed that the Fed-primer/Win-brass fit is exceptionally easy when priming w/ my
old-style Lee AutoPrime.

Is there some component history problem here I've missed of late?

May 8, 2012, 11:48 AM	#1
mehavey Senior Member Join Date: June 17, 2010 Location: Virginia Posts: 6,894	Leakage -- Winchester 357Mag brass/Fed Small Pistol Primers In working up loads for a `92 Winchester rifle in 357, I noticed my first (in 45 years) sooty primer "leakage" around the circumference of the Fed Small Pistol primers in brand new Winchester brass. Pressures are not [suposedly] max'd using 14-15gr Lil'Gun under a BearTooth185CastRNFP/GasCheck'd/OAL=1.575", and primers look normal otherwise. Oehler-chrono'd velocities are consistent with shooters using this combination /listed speeds on the Cast Boolits forum. I have noticed that the Fed-primer/Win-brass fit is exceptionally easy when priming w/ my old-style Lee AutoPrime. Is there some component history problem here I've missed of late? Last edited by mehavey; May 8, 2012 at 08:37 PM.