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Richard, and everyone else. I apologize for not being able to state clearly what I can see in my head. Any confusion here is my fault. I thought that I had explained that the ground speed of the bullet is irrelevant to the drag on a bullet, and that it was solely dependant on the atmosphere...

Doing the science I think that doing the science is a big part of the problem for this type of thread. Lots of us can do the actual math to figure out each and every aspect to determining the path of the bullet. Adding it all up to mean something is where it all gets confusing. Most everyone...

Vibe Glad you jumped in here. Your input is appreciated. Lisa

I think that there may be a misconception of what I meant in my previous post. I stated that a bullet fired into a headwind will require more time to travel a given distance than a bullet will take to travel the same distance fired in a “no wind” situation. Therefore, the bullet fired into the...

Gene, Okay, I’ll bite again. In my opinion, this is one of those questions that is ALMOST impossible to answer, because it is ask in an ambiguous way. The question stated is “We zeroed our rifle to hit dead on point of aim at 100 yards in calm conditions. An hour later, winds are 12:00...

Richard, I'll answer your questions. Please don't get discouraged. If a spin stabilized bullet encounters a cross wind, the difference in drag force on the upwind and downwind side of the bullet, will result in the bullet turning into the apparent wind to the point where the drag forces...

Vibe, Thank you, and I agree with your assesment of my conclusion. I was just trying to explain in a manner in which everyone could visualize what I was saying. At some point, the bullet WILL stop turning into the wind and simply act as any other object in the air mass. Often-times in...

Gene, Sorry to disappoint you, but no, I am not a pilot. I am merely a student of the rifle. I am fortunate to have a husband that is an experienced long-range competitive shooter, former marine shooting instructor, and also a student of the rifle. Along with that, my husband and I are...

This is where I disagree I've stayed out as long as I could, but my opinion is that airplanes and bullets may be very similar, but airplanes are not flown in the manner that bullets fly. Sorry, I should have taken Gen's advice and stopped reading his post:D I don't agree with Gene's...

Mustafa Good to hear from you. Yes, you will see me this year--component availability troubles satisfied for a couple of years anyway.. If your MacRail is still for sale next month, we talk about it at the match. Not sure I'm willing to pony up $1,700.00 to test a prototype, although...

Call them I'm interested in opinions of how they work, not how they're advertised. I don't recognize the name, nor do I remember anyone ever using one of these at a match in the Northwest. I don't need to call them, I live an hour away and could go see them. Having a good-looking product...

Anyone know anything about the rails that are for sale in the classifieds? http://www.benchrest.com/cgi-bin/classifieds/classifieds.cgi?db=aaafirearms&website=&language=&session_key=&search_and_display_db_button=on&results_format=long&db_id=7789&query=retrieval Thanks, Lisa Spendlove

RPM Formula Here is the formula for determining bullet RPM: MV x (12/twist rate in inches) x 60 = RPM or RPM = MV x 720/twist rate 1 in 10 twist at 3000 fps = 216,000 rpm 1 in 10 twist at 4000 fps = 288,000 rpm Lisa

Bryan Did you see my list of weights for Jeff's gun on the other thread? Those were right off of our MyWeigh 55. Lisa

Velocities? What velocities are you guys getting in the 27.0-28.5 grain range? The reason I ask is that I get the best accuracy, most consistent velocity, and (what I consider a) not TOO hot load at 30.6 grains--3340 fps. All of this is with Bart's 68 gr headhunters, 6ppc, krieger .237...

I need some help. I would like to pick up 2 or 3 spare firing pins springs for my Nesika Bay J bolt. I have tried Nesika/Dakota. No luck. Not even a response, to either email or phone. Out of curiousity, what is the difference between a Nesika spring and, say, a Remington or Borden. Anyone...

Jackie I have a couple of questions I hope you don't mind answering. As you know, I have also tried the "Calfee-style" tuner based on Lynn's suggestions. I got the basic theory to work both times I tried it. I, however, could not get the same weight to work both times. This is what...

Lynn Okay. Something else must be wrong. Of course the DA was different. The temperature was 20 degrees colder, the humidity was almost 30% higher, and it was raining (hard) instead of being sunny. Last week the DA was 153. This week it was 489. That's the point. If the same weight...

2nd Day Testing Okay, I'll follow up on last weekends test of the "Calfee-style" muzzle device that I posted about last week. I tested all day on Saturday. 1st. As I suspected, I could not get repeatable results with the same weight/load as the previous week. Using the same combination...

Jeff, What's the BR schedule up in your neck of the woods this year. I would really like to come up and shoot with you guys. Can't make the Nats because they always hold them right after school starts, so I'm trying to make as many "away" matches as I can. Lisa BTW what's the process for...