Feb 21, 2002

Determining the BC of a bullet?
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Posted by: Nick B
02/21/2002, 01:07:05

I plan on purchasing a box or two of the JRP bullets I mentioned below, and was wondering what information I need to calculate their BC. I have a chronograph, so I can measure muzzle velocity and 100-yd velocity. The weight is known (25 gr), so what else is needed? Is there any online calculator that I could punch these figures into? Thanks.

Re: Determining the BC of a bullet?
Re: Determining the BC of a bullet? -- Nick B		Top of thread	Archive

Posted by: Rich in VA ^Ž
02/21/2002, 05:08:14

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Yes, you can do it this way, altho' two chronos would give you more accurate readings. With two chronos, just take the two readings, plug them into the program. With a one-chrono set up, I would shoot about 5-10 rounds at the muzzle and get an average. Then move the chrono to 100 and get another average. Then, plug both numbers into the program and calculate.

One program that does this is PointBlank, available free at www.huntingnut.com Also, Bill Frenchu's excellent program, available as shareware at http://ourworld.compuserve.com/homepages/wrf/shoot.htm#prog

I use both at times, just as a check against each other.

Hope this helps.

Rich

old lot of eley rf
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Posted by: tarheel ^Ž [to tarheel]
02/21/2002, 14:30:34

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gentlemen,i would like to buy some lot #WQ3017,its an old lot,5yrs or better,i will pay $15.00 a box,this is eley gold,white lid,i will buy 1 box,i brick,please e-mail me if you can find any amount!don in n.c. 704-857-5729 please!

Best powder for 17 Rem.........
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Posted by: Cleankill
02/21/2002, 22:34:40

Just getting started loading for 17 Rem. i have a Bullberry barrel on my Encore frame. just curious what you guys recommend and use, and maybe some starting loads. i plan on trying 20 gr VMAX to start.

also does anyone make a competition seater for the 17 rem besides redding. i thought at one point in time i read that forester did but i am unable to locate it if they do.

thanks
andy

if anyone has a comp seater they want to get rid of contact me!!

Re: Best powder for 17 Rem.........
Re: Best powder for 17 Rem......... -- Cleankill		Top of thread	Archive

Posted by: Drifter
02/21/2002, 23:00:23

The most accurate load in my rig is 24 gr of imr 4320 with a 25g starke and fed 205M primers. Then the reduced charge of 10 gr of blue dot.

I am not sure about the comp seater, but try www.lockstock.com they are a good place to start.

I have a bunch of data I could e-mail you if you want.

good luck

Drifter.........
Re: Re: Best powder for 17 Rem......... -- Drifter		Top of thread	Archive

Posted by: Cleankill
02/22/2002, 00:03:43

i would appreciate any info you would forward my way, thank you. that 24 grains of imr 4320, is that max or near max load? have you ever used any 20 gr vmax's? i am just getting into this, so am i right thinking that the 24 gr with the 20 grain vmax would be a safe load since it is a lighter pill?

thanks for your help
andy

Re: Drifter.........
Re: Drifter......... -- Cleankill		Top of thread	Archive

Posted by: Drifter
02/22/2002, 13:06:35

The 24 g load is getting close to max, so I would say work up slowly as always. The 20g V-max with the same charge was ok, but no where near as accurate as the 25g starke, that is the best bullet I have tried, and I have tried a mess.

I did not have great results with the V-max in either my 17 rem or m4 , but give them a try and see how they do for you.

I'll send ya the data.

see ya

Looking for an action
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Posted by: Drifter
02/21/2002, 22:55:43

I am looking for a win M-70 223 or similar bolt face for a project. I am looking for a good deal on a used rifle or just an action , whichever.

Any idea's ??

I have a beautiful hunk of quilted maple that is needing some steel sunk into it. just sold my Encore so its time to start the new shooter.

drop me an e-mail if you have one you are looking to sell
Thanks