Deederswy
Well-Known Member
Hello all,
I have a quick question about COAL...Im shooting a 7mm mag(Remington 700) and im loading the 168 berger. I know that bullet seat depth plays a big part in accuracy with these bullets. According to SAAMI the COAL im supposed to have is 3.290...Ive been loading these rounds at 3.300 with no issues but I never knew how far out I could seat them. I just bought a hornady lock and load OAL gauge and I tested it 5 times, each time coming up with 3.450 for my OAL! That seems a bit long but its what I got. My question is, I know each chamber is different but is that a safe OAL? Also, ive only been pushing those bullets on average of 2850 fps(which I believe is slow) with 64gr of IMR7828 and federal 215 primers. By seating them out further, say .020 off, will I run into pressure issues and/or will I gain velocity? IMR7828 was my accurate load. I tried H1000 and couldn't get decent groups, could that be due to being seated too deep? I also have some Retumbo I was going to try. I feel like im starting back from square 1 with this!
I have a quick question about COAL...Im shooting a 7mm mag(Remington 700) and im loading the 168 berger. I know that bullet seat depth plays a big part in accuracy with these bullets. According to SAAMI the COAL im supposed to have is 3.290...Ive been loading these rounds at 3.300 with no issues but I never knew how far out I could seat them. I just bought a hornady lock and load OAL gauge and I tested it 5 times, each time coming up with 3.450 for my OAL! That seems a bit long but its what I got. My question is, I know each chamber is different but is that a safe OAL? Also, ive only been pushing those bullets on average of 2850 fps(which I believe is slow) with 64gr of IMR7828 and federal 215 primers. By seating them out further, say .020 off, will I run into pressure issues and/or will I gain velocity? IMR7828 was my accurate load. I tried H1000 and couldn't get decent groups, could that be due to being seated too deep? I also have some Retumbo I was going to try. I feel like im starting back from square 1 with this!