45 grains in a .223
05-14-2006, 06:26 AM
#1
Nontypical Buck
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Join Date: Aug 2004
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45 grains in a .223
I picked up a Sako with a 1 in 8 twist, and took some 45 grainers along (Winchester USA) to see if they would help me print on target. I was thinking that I might lose the jacket in flight with that twist rate. Actually, at the 100 yard point, they held up and did not do too bad. Do any of you have varmint rifles with a twist in this area, and have luck with the 45 grainers?
05-15-2006, 04:41 PM
#2
Giant Nontypical
Join Date: Jan 2004
Location: a van down by the river
Posts: 8,939
RE: 45 grains in a .223
I've got a 1 in 9" twist in my barrel. Some of my best groups have come with 40 grain Hornady V-Max bullets. The velocity of a .223 is pushing the envelope with lightly jacketed varmint bullets, but they should still hold together until they hit the target.
05-20-2006, 03:54 AM
#4
Nontypical Buck
Join Date: Jun 2004
Location: A flat lander lost in the mountains of Northern,AZ
Posts: 3,171
RE: 45 grains in a .223
you shouldn't have any problems with a 1 in 9 twist and 40 grain bullets at all, even with a 1 in 8 twist, Ive seen some nice grouping come from a friends AR-15 with a 1 in 7 twist and those 45 grain winchester hp's
05-20-2006, 05:26 PM
#5
Nontypical Buck
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RE: 45 grains in a .223
Funny, but I was shooting Federal Premium 69 grain boat-tails and the group was about1-1&1'4 inches at 100. I was a little dissapointed but then I had higher expectations for the Premium line. I will have to try some 60-64 grainers next time out. I am not handloading these days so I am a bit handicapped. (In addition to not having either the hand or eye that I had 30 years ago. 
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