Recent content by Doom

Brian Litz posted a discussion where he stated that he no longer did load development, but with the caveat that with the barrels being used in LR it wasn't necessary. I have done enough load development with varmint barrels using OCW to believe that barrel harmonics do play a factor. If I...

Nope.

First off, commercial reloading primers have lead styphnate as an active ingredient. That lead will be present in the spent primer, case and rifle bore. If cases are dry tumbled lead will be present in the media and dust. It will be present in the cleaning patches. If cases are wet tumbled...

First SAAMI is not outdated. Read the purpose of the SAAMI standards. As a reloader you are not limited to interchangeability with other firearms. The one caliber minimum seating in the neck is a generalization. You are not bound to maintaining that but you must understand the implication of...

@Basic user, Bullets are said to "go to sleep" when the precession about the bullet path that occurs on the exit from the muzzle dies out.

People have tested the Garmin vs LabRadar vs Mangetospeed and they all essentially agree. LR and Garmin have stated accuracy of 0.1% of reading for rifle velocities, so somewhere between +/- 2 to 3 fps.

Bullet weight isn't going to be a factor, it is a pressure issue. However since these bullets are mostly used in LR match situations shooters are pushing the pressures beyond SAAMI in most cases so it's likely that is the case.

QL and GRT are subject to Garbage In/Garbage Out but GRT is pretty easy to use. There is a lot of info on the Discord Site. It can be helpful in selecting powders but as others have noted it is not something to replace a formal load development. It will allow you to "play" with some variables...

Remember those published numbers are in 24”barrel so a 20” will run about 100 to 110 fps lower. I think I would try the VV 140.

A 20" barrel and >2600 fps is not something that is likely to happen with the 168 gn bullet. At least not without going above SAAMI pressure. Most of the H/IMR 4xxx are not going to make it. Likely CFE 223, BLC-2, and ACCURATE 2460 are probably the most likely to get over that hurdle.

I tried to test whether the ChargeMaster 1500 was rounding or truncating but I was unable to get repeatable results. I will defer to your experience. I think part of my confusion was brought on by the issue below. I have never seen a -0.0 on the Chargemaster and won't because of the auto zero...

If the display is 0.1 gn then Your drift will exceed 0.099gn before you see it. If the minimum display increment is 0.02gn then you see the drift when it exceeds 0.0199gn. EDIT: I BELIEVE THIS IS NOT CORRECT. THE MAXIMUM DRIFT IS 1/2 THE ABOVE VALUES. Interference is usually easy to detect...

Most electronic scale issues are associated with zero/tare drift and not calibration drift. Good laboratory practice is to re-zero the scale BEFORE EVERY SAMPLE IS WEIGHED. This is a step that is often omitted by reloaders. RE-ZEROING eliminates the potential drift issue and is a common...

@Woolsocks , we seem to have a never-ending discussion on ES and SD, small sample sizes and and all it entails. The above comments are correct and helpful. Let me add a couple of points: 1. No matter how many shots are fired the ES is made up of only two. In reality, ES has no statistical...

If you come up 11 MOA for 100yds then you need an additional 32/1.047/2 or ~15MOA additional to 200yds. Note that these are estimates and you really need to verify this on a range before taking this to a hunt.