243 Win Reloading Question

Pa_Shooter · December 11, 2012, 10:25 AM

I may be asking something previously asked but I need to see if I am right. I am reloading for a 243 POF Ar-10. I loaded 4 different loads from the Lyman Book for different grain bullets. I did it all as per the book, shot the loads, came back from the range and put all the brass in the tumbler. I resized them, cleaned all the primer pockets and primed all of them. Half of the brass had primer pockets that were way too big, the primer went in with no resistance whatsoever. I know that an over-pressured load will do this and I have heard of magnum primers sometimes doing this but I uses CCI 200s so I know thats not the problem. Anyone with some ideas??

Brian Pfleuger · December 11, 2012, 10:38 AM

We're going to need a lot more information to give you any kind of answer.

What are the specific loads you were using?

Is the brass new? All one brand? Used previously but in your gun or someone elses?

oneoldsap · December 11, 2012, 11:34 AM

If you had kept each load segregated , you'd know which load or loads were the culprit ! Throw out the brass with the distended primer pockets , and start over , if those Primer pockets stretched that much , the primers must have backed out to some extent and were probably readily apparent ! Keep your brass seperate for each load , all the way back to the reloading bench for final inspection . I'm sure your problems have more to do with charge weight , than primers or anything else !

mohr308 · December 13, 2012, 02:29 AM

when im taking a bunch of rounds with different charges in them, i write the grains on the side of the brass with a permanent marker. it helps.

schmellba99 · December 13, 2012, 09:59 AM

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Same here. Makes knowing what you have in the ammo box quick and easy, and there is no guessing involved.

reynolds357 · December 13, 2012, 08:29 PM

My first guess is that over pressure is the culprit. Bad lot of brass is an extremely remote possibility.

December 11, 2012, 10:25 AM	#1
Pa_Shooter Junior Member Join Date: December 9, 2012 Posts: 1	243 Win Reloading Question I may be asking something previously asked but I need to see if I am right. I am reloading for a 243 POF Ar-10. I loaded 4 different loads from the Lyman Book for different grain bullets. I did it all as per the book, shot the loads, came back from the range and put all the brass in the tumbler. I resized them, cleaned all the primer pockets and primed all of them. Half of the brass had primer pockets that were way too big, the primer went in with no resistance whatsoever. I know that an over-pressured load will do this and I have heard of magnum primers sometimes doing this but I uses CCI 200s so I know thats not the problem. Anyone with some ideas??

December 11, 2012, 10:38 AM	#2
Brian Pfleuger Moderator Emeritus Join Date: June 25, 2008 Location: Austin, CO Posts: 19,578	We're going to need a lot more information to give you any kind of answer. What are the specific loads you were using? Is the brass new? All one brand? Used previously but in your gun or someone elses? __________________ Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley

December 13, 2012, 02:29 AM	#4
mohr308 Senior Member Join Date: January 15, 2012 Location: Western New York Posts: 466	when im taking a bunch of rounds with different charges in them, i write the grains on the side of the brass with a permanent marker. it helps. __________________ Lock and load, the zombies (democrats) are coming (to take your guns)!

December 11, 2012, 11:34 AM	#3
oneoldsap Senior Member Join Date: September 16, 2009 Location: I live in the foot of the Green Mountains of Vermont Posts: 1,602	If you had kept each load segregated , you'd know which load or loads were the culprit ! Throw out the brass with the distended primer pockets , and start over , if those Primer pockets stretched that much , the primers must have backed out to some extent and were probably readily apparent ! Keep your brass seperate for each load , all the way back to the reloading bench for final inspection . I'm sure your problems have more to do with charge weight , than primers or anything else !

December 13, 2012, 09:59 AM	#5
schmellba99 Senior Member Join Date: January 8, 2008 Posts: 803	^ \| \| Same here. Makes knowing what you have in the ammo box quick and easy, and there is no guessing involved.

December 13, 2012, 08:29 PM	#6
reynolds357 Senior Member Join Date: December 10, 2012 Posts: 6,165	My first guess is that over pressure is the culprit. Bad lot of brass is an extremely remote possibility.