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Need help with bullet choice...(weight)

 
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  #8  
Old 02-08-2012, 10:07 PM
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Re: Need help with bullet choice...(weight)

Quote:
Originally Posted by AtownBcat View Post
So I hope this is in the right forum...

This question has been on my mind for a while and I do not believe I have seen it discussed as I will attempt to ask it here...

First a little background. I shoot a 300WM.
Kreiger 26 inch 1 in 10 twist barrel.
It will shoot 178 and 208 grain AMax's equally well.
I was shooting the 208's with 77.7 grains of Retumbo, CCI Mag primers, RWS Brass. It was a very accurate load but about every couple of shots, I was having a little trouble with heavy bolt lift. I figured no matter how great it shot, this was not going to work. So I started to lower the powder charge 77.5-77.3-77.1 still having trouble(new factory ammo no problem) I could be having a problem with my reloads but i just think the load is still a little hot.

So for the question:

How do you decide where the line is between speed(shooting the 178's) and BC is(the 208's) I mean how slow do I have to go with the 208's before the speed of switching to the 178's is more important(accurate) then the higher BC of the 208's?
try dropping back to fed gm 210 primers your probably getting a pressure spike using mag primers. i use 75 grains with 225 thats max with 215 mag primers but light with 210s
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  #9  
Old 02-15-2012, 12:52 PM
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Re: Need help with bullet choice...(weight)

OK, so I have a range update.

I Had already loaded some rounds 2g lighter than the 77.7 that I started with. (not the three that was recomended). I also found some virgin winchester brass.
I loaded the winchester brass with my starting load of 77.7 grains.

The RWS brass with 75.7 grains stuck just like the 77.7 did. But the virgin winchester brass had no pressure signs and ejected perfectly. So it can only be either there is that much difference in the two brands of brass or the fact that the RWS (third firing) is not being sized all the way to the belt is causing the problems.
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  #10  
Old 02-15-2012, 12:59 PM
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Location: utah
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Re: Need help with bullet choice...(weight)

Quote:
Originally Posted by AtownBcat View Post
OK, so I have a range update.

I Had already loaded some rounds 2g lighter than the 77.7 that I started with. (not the three that was recomended). I also found some virgin winchester brass.
I loaded the winchester brass with my starting load of 77.7 grains.

The RWS brass with 75.7 grains stuck just like the 77.7 did. But the virgin winchester brass had no pressure signs and ejected perfectly. So it can only be either there is that much difference in the two brands of brass or the fact that the RWS (third firing) is not being sized all the way to the belt is causing the problems.
check over all length of the case also
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  #11  
Old 02-15-2012, 01:56 PM
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Re: Need help with bullet choice...(weight)

I trim cases after every firing so this should not be a problem.
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