Per Sierra. Their 60gr hp (designed for 220 swift, 22-250 velocities) has worked well on deer out of 223 with velocities kept between 2800-3000fps. I’m going to give those a try because my rifle has a 12” twist. If it had a faster twist, I would use the 65gr Sierra gameking.
JTD
Could be wrong,but I would be surprised if the 12 twist would shoot the 60gr bullets accurately.
Are those bullets a flat base ?? What rifle do you have that has a 12 twist bbl ?? --- SAWMAN
Why just dance when you can "rock and roll".
STONER 63A ( MK-23/XM-207 )
XM177E2
Amazing . . great to hear. The longer barrel guns ??
Gotta give them a try in my 11",1:12 twist XM177E2. Been looking for a "just in case" hunting load.
It will not shoot the M855 green tips. Not enough lead I suspect,+ the length,being a boat tail. --- SAWMAN
Why just dance when you can "rock and roll".
STONER 63A ( MK-23/XM-207 )
XM177E2
Didn’t specify barrel length, just 2800-3000fps. I guess if you can attain 2800 (or close) from an 11” barrel, you should be good to go. I have never tried them, so all of this info is from Sierra, but I do have a partial box on hand that I am at least going to try to work up a load.
JTD
I was watching a video on you tube. This guy was shooting the 55gr hornady sp w/ cannelure into 10% ballistic gel. First picture shows 3000fps impact velocity. Second picture is 2750fps impact velocity. Very interesting results.
JTD
That’s interesting on the difference in penetration and weight retention.
Sent from my iPhone using Tapatalk