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Red_SC
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Post subject: 155 SMK velocity estimation  Posted: February 18th, 2010, 2:08 pm |
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Joined: July 12th, 2009, 11:10 pm Posts: 153
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Figured I'd throw this out there- in getting ready for PMC, I decided to switch to the new 155 SMK Palma bullets. I ended up with 46.3gr H4895 in '72 Lake City Match, CCI BR2 primers, at about 2.820 oal. I finally got a chance to shoot it to get my drops at 525 and 1000, and from my comeups I got a velocity of around 2950 fps. The chronograph says they're going 2825, though- a pretty significant difference, but it's an unknown Chrony so I don't know if it's correct or not. Currently my plan is to run the 2950 drop chart, and if I'm shooting under everything I'll switch to the 2825 chart.
Which velocity would you think is correct out of a 700P cut to 20"?
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uscbigdawg
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Post subject: Re: 155 SMK velocity estimation Posted: February 19th, 2010, 6:44 pm |
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Joined: July 21st, 2009, 11:12 am Posts: 90 Location: Sacramento, CA
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I'd use your come-ups and screw the velocity.
Rich
_________________
"Speed is a tactic" - R.W.
"Pressure is what you feel when you don't know what you're doing." - Chuck Knox
* NRA Certified Instructor: Pistol, Rifle, Shotgun, Metallic/Shotshell Reloading, Personal Protection, NRA RSO
* NROI Range Officer
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Red_SC
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Post subject: Re: 155 SMK velocity estimation Posted: February 23rd, 2010, 4:57 pm |
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Joined: July 12th, 2009, 11:10 pm Posts: 153
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From what I saw at the match, I think the velocity was correct, or at least close. The tracking on my Leupold decided to act up, which gave me bad data. It's currently on its way back to Leupold, and I'm looking for things to sell to get a Nightforce.
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