Gamekeepa 0 Posted July 7, 2009 Report Share Posted July 7, 2009 Hi Guys, The first load I tried for my .243 grouped 1/2" at 100 yrds which I was well chuffed with. The load was as folows: 70 grain Nosler BT 47 grains IMR 4350 powder CCI Benchrest primers Federal brass cases O.A.L. 2.6640 I was unable to get any more Benchrest primers locally as everywhere was sold out, so decided to get some Federal Gold Medal primers instead. I also purchased some nickel cases to try. I made up a load as before, only this time with the Gold Medal primers and nickel cases. I went on the range expecting to have to re-zero slightly, but found that my grouping was inconsistent. I was finding that out of a four shot group two of the bullets could be through the same hole and the other two were 1" off. I know you should never change more than one component at a time, but I really didn't think it would make my groups so inconsistent! Really don't understand how you can get two or three bullets touching and the other one or two an inch or so away? Thanks in advance for any suggestions. Quote Link to post
SNAP SHOT 194 Posted July 7, 2009 Report Share Posted July 7, 2009 Hi Guys, The first load I tried for my .243 grouped 1/2" at 100 yrds which I was well chuffed with. The load was as folows: 70 grain Nosler BT 47 grains IMR 4350 powder CCI Benchrest primers Federal brass cases O.A.L. 2.6640 I was unable to get any more Benchrest primers locally as everywhere was sold out, so decided to get some Federal Gold Medal primers instead. I also purchased some nickel cases to try. I made up a load as before, only this time with the Gold Medal primers and nickel cases. I went on the range expecting to have to re-zero slightly, but found that my grouping was inconsistent. I was finding that out of a four shot group two of the bullets could be through the same hole and the other two were 1" off. I know you should never change more than one component at a time, but I really didn't think it would make my groups so inconsistent! Really don't understand how you can get two or three bullets touching and the other one or two an inch or so away? Thanks in advance for any suggestions. different cases have different volumes inside thus changing pressure within the case, this may be one reason, that and also the primer change may have thrown a spanner in the works too... stick to one brand of component, and if anything changes you have to work up your load again.... ATB. Snap. ps the nickel cases look nic but they are to hard to work with.... IMHO. best of luck. Quote Link to post
dicehorn 38 Posted July 7, 2009 Report Share Posted July 7, 2009 Yes, as Snap says could be your cases - easily proved - just weigh a nickel against one of your Federal If nickel were that good, every one would be using it. Quote Link to post
Gamekeepa 0 Posted July 8, 2009 Author Report Share Posted July 8, 2009 Thanks for the suggestions guys! Think I will try different powder rates to start with and if that doesn't work i'll scrap the nickel cases and go back to brass! The nickel cases do look sexy though!! Quote Link to post
provarmint 25 Posted July 8, 2009 Report Share Posted July 8, 2009 Go back to your original brass, use same load as before, if results are good then its not the primers it will be the cases. Quote Link to post
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