flat base vs bt

tango6

Member
Joined
Mar 5, 2012
Messages
8
Location
Columbus, GA
I have a very accurate load worked up for my 308 using Hornady 150 gr BTSP. I ordered 500 more and when I got them and started to load them up I saw where they had shipped me flat base 150's.
If I load these with the same data as the BT's, what changes can I expect in trajectory?
 

Lefty7mmstw

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May 13, 2012
Messages
4,803
Location
Dakota del norte
Not that much frankly as long as they are the sp and not the round nose unless you are going over 500 yards with it. I prefer fb bullets as they are usually a bit more accurate; the newer bt designs are **** good though too. I killed a mule deer at over 500 yards with the 165 hornady sp fb out of my 300 win this year-- trotting critter and a 20 mph wind to boot.
 

tango6

Member
Joined
Mar 5, 2012
Messages
8
Location
Columbus, GA
They are both the SP and 300 yds would probably be a long shot for where I hunt. I am loading these up mainly for my "zombie killers". :D
Thanks for the reply.
 

Canvsbk

Well-Known Member
Joined
Apr 17, 2012
Messages
220
Location
Michigan
Flat base bullets work great on zombies and I doubt you'll notice any difference inside 300 yards.
 

tango6

Member
Joined
Mar 5, 2012
Messages
8
Location
Columbus, GA
That is kind of what I thought but I normally reload BT bullets for my hunting rifles and I did not want to reload 500 of these FB and then find they didn't shoot worth a hoot. And I didn't want to return them.
 

Lefty7mmstw

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Joined
May 13, 2012
Messages
4,803
Location
Dakota del norte
That is kind of what I thought but I normally reload BT bullets for my hunting rifles and I did not want to reload 500 of these FB and then find they didn't shoot worth a hoot. And I didn't want to return them.

Sometimes sp and bt bullets (even from the same maker) will shoot slightly different accuracy wise with a given powder charge. You may need to adjust your load a bit, but they will be fine. Just make sure to shoot a few before you load 'em all up.
 

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