The post whore thread.

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03-03-2014, 11:03
mcjhr

Morning all. Fairly warm Monday. Hope everyone has a good one!
03-03-2014, 11:42
Ridge

65 forecasted for Thursday. Might have to call in sick...
03-03-2014, 11:42
HoneyBadger

Quote:

Originally Posted by Great-Kazoo

Hey, it's the honeywhisperer .

You laugh, but we leave our dog outside for long periods of time (sometimes several hours in good weather) and we don't have a fence of any sort. He knows 18 different commands and follows them well. He doesn't tear up the house or get into trouble when we leave him home alone for 9-10 hours every day. He just turned 2 and is very much still a puppy.
03-03-2014, 11:45
HoneyBadger

Quote:

Originally Posted by BuffCyclist

Mornin' Hos!!

Might have time to head to the range to zero my scope/rifle today, pretty excited! Wish I had time to test some reloads, but I'll be lucky if I can even get to the range at all.

Belly, I'd be interested in hearing how you develop a load for a precision rifle. Do you do a ladder test (1 round of each charge at 300+ yards, aiming at same spot and look for nodes, then repeat with smaller powder increments adding 100yds) or do you just fire over a chronograph looking for single digit SD's?

eta: I only ask because I either need to buy a chronograph (looking at Competition Electronics ProChrono) or figure out the distance to shoot for a real ladder test. I planned on shooting my test loads through a chrono. If the first 2 shots of each load had velocity variation greater than 15fps, I'd move to the next load (because that indicates a SD greater than 10). If they were under 15fps, I'd shoot the remaining 4 shots for a 5 shot group and record the data. I'm leaning away from purchasing a chrono due to the added expense, but only have access to 300yds easily, if I want to head to the 1000yd range, I'd first have to find out where it is, and then I'd only be able to shoot there once every other week at most.

Why wouldn't 100yds be adequate for testing? Ignoring environmental factors like wind, shouldn't the accuracy translate from 100yds to 300yds with a factor of 3? Am I showing my lack of shooting knowledge/skill? [Dunno]
03-03-2014, 11:58
BuffCyclist

Quote:

Originally Posted by HoneyBadger

Why wouldn't 100yds be adequate for testing? Ignoring environmental factors like wind, shouldn't the accuracy translate from 100yds to 300yds with a factor of 3? Am I showing my lack of shooting knowledge/skill? [Dunno]

Can you believe this guy?! Sheesh... noobs, amiright?! [Shake]

[LOL]

What I was referring to is a ladder test, where you shoot one round at each charge, aiming at the same point. What happens, is more powder equals faster bullet speed equals higher up on the target, effectively climbing a ladder. If you do it correctly, you'll notice a few rounds cluster together vertically closer than the others, that is effectively a "node" and where your rifle will be most accurate, because the muzzle will be at the top (or stopped) of a node in a sine wave pattern from the harmonics of the barrel. Everything I read about this said start at 200yds and work out 100yds each iteration.

The longer distance you shoot, the longer the ladder will be which presumably means the nodes will be easier to spot.
03-03-2014, 12:18
HoneyBadger

Quote:

Originally Posted by BuffCyclist

Can you believe this guy?! Sheesh... noobs, amiright?! [Shake]

[LOL]

What I was referring to is a ladder test, where you shoot one round at each charge, aiming at the same point. What happens, is more powder equals faster bullet speed equals higher up on the target, effectively climbing a ladder. If you do it correctly, you'll notice a few rounds cluster together vertically closer than the others, that is effectively a "node" and where your rifle will be most accurate, because the muzzle will be at the top (or stopped) of a node in a sine wave pattern from the harmonics of the barrel. Everything I read about this said start at 200yds and work out 100yds each iteration.

The longer distance you shoot, the longer the ladder will be which presumably means the nodes will be easier to spot.

That's actually a very good explanation. Thank you. Yes, I'm a noob. [Tooth]
03-03-2014, 12:20
BuffCyclist

Quote:

Originally Posted by HoneyBadger

That's actually a very good explanation. Thank you. Yes, I'm a noob. [Tooth]

Yea, me too, at least to precision shooting/reloading. There is a lot of debate online whether Ladder test, OCW (optimal charge weight), shooting for groups, or using a chronograph to get single digit StdDev's is the most precise way of determining the best load data for a rifle. That's why I asked. I want to start testing loads for my rifle so I can start reloading at that charge to have ammo on hand, but wasn't sure which is the smarter way to go about picking that load.
03-03-2014, 12:22
brutal

Quote:

Originally Posted by BuffCyclist

Can you believe this guy?! Sheesh... noobs, amiright?! [Shake]

[LOL]

What I was referring to is a ladder test, where you shoot one round at each charge, aiming at the same point. What happens, is more powder equals faster bullet speed equals higher up on the target, effectively climbing a ladder. If you do it correctly, you'll notice a few rounds cluster together vertically closer than the others, that is effectively a "node" and where your rifle will be most accurate, because the muzzle will be at the top (or stopped) of a node in a sine wave pattern from the harmonics of the barrel. Everything I read about this said start at 200yds and work out 100yds each iteration.

The longer distance you shoot, the longer the ladder will be which presumably means the nodes will be easier to spot.

You may want to have a peek at this: http://optimalchargeweight.embarqspa...ons/4529817134
03-03-2014, 12:23
BuffCyclist

Quote:

Originally Posted by brutal

You may want to have a peek at this: http://optimalchargeweight.embarqspa...ons/4529817134

Yea, that's what I've been looking at for the correct method of the OCW test. But this link was making me question which is a better method:
http://forum.snipershide.com/snipers...-powderin.html
03-03-2014, 13:01
bogie

Quote:

Originally Posted by BuffCyclist

Yea, me too, at least to precision shooting/reloading. There is a lot of debate online whether Ladder test, OCW (optimal charge weight), shooting for groups, or using a chronograph to get single digit StdDev's is the most precise way of determining the best load data for a rifle. That's why I asked. I want to start testing loads for my rifle so I can start reloading at that charge to have ammo on hand, but wasn't sure which is the smarter way to go about picking that load.

It seems to me that reducing STDEV would be "a" best approach assuming one knows the rifle's inherent accuracy. This eliminates shooter error and besides it's all up to god (physics) anyway after the bullet leaves the barrel.