Just got my first .300 Win Mag, a Remington XCR Tactical. 26" barrel. I have a few questions for you experienced guys.
What recipe you guys using to fireform your new brass?
I shoot the Sierra MK 175's in my .308 5R so I'm gonna start with those until I can get some heavier bullets. I used my Hornady Lock-n-load OAL gauge and when I touch the lands with this bullet it is basically out of the casing. Certainly not enough to hold the bullet in place. I measure 3.66" with the gauge to the lands. So how deep do I need to really seat the bullet (BT back end) to get a good grip on it? I won't get anywhere near the lands with this combo, maybe a OAL of 3.5" or so if I seat it 1 diameter deep.
And lastly, I see all kinds of starting loads on the 'net using I4350 and I7828 which I already have. Many don't specify the primer used. My new Lyman book says their recipes are for standard LR primers. As hard to get as primers are now, do I need magnum primers for any reason or can I get away with what I have (several thousand Win LR)?
Thanks.
What recipe you guys using to fireform your new brass?
I shoot the Sierra MK 175's in my .308 5R so I'm gonna start with those until I can get some heavier bullets. I used my Hornady Lock-n-load OAL gauge and when I touch the lands with this bullet it is basically out of the casing. Certainly not enough to hold the bullet in place. I measure 3.66" with the gauge to the lands. So how deep do I need to really seat the bullet (BT back end) to get a good grip on it? I won't get anywhere near the lands with this combo, maybe a OAL of 3.5" or so if I seat it 1 diameter deep.
And lastly, I see all kinds of starting loads on the 'net using I4350 and I7828 which I already have. Many don't specify the primer used. My new Lyman book says their recipes are for standard LR primers. As hard to get as primers are now, do I need magnum primers for any reason or can I get away with what I have (several thousand Win LR)?
Thanks.