Search results

Temperature: Opinion only. From Tune: When a shot is fired there is extreme hot, pressurized gasses produced heating both bullet and barrel bore. The bullet and barrel have different coefficient of thermal expansion which over time and round fired, changes the clearances between bullet and...

Pete: PM sent.

Hey Pete! Good to hear from you! All good here and hoping to make Augusta in June. Trust you are well! Take Care!

Sorry, I do not have the answer to your question; as I am not exactly sure how one reads a group that was shot with a two hour variance, gusts doubling in velocity and not knowing when the trigger was pulled. No question on the vc but think that has more value at long range. Question: Were...

I have been out of the sport for way to long and am having a – senior moment; and the fact that I probably never knew :) But, I just looked at all my old 30BR boxes and I am thinking they have to be from two different lots at least. What effect or what result will a mix and match approach...

Practice ? I remember watching you and Harley one time the day before the shoot doing exactly that. It was real fine watching. I wish I had of been smart enough to ask question...... Ken

Why?

To clarify my poorly worded question: Have any bullet makers associated any relation between bullet imbalance and the Quality of the lead wire? - Homogeneous make up and purity. Ken

On the topic of imbalance and or dispersion: I have read about issues with jacket wall thickness, possible air pockets between jacket and core and core movement during point up but, as to core uniformity other than Vaughn I have not heard any concerns. Just wondering about miss distance...

Hi Pete…. Hi Greg…… Well after 40 plus years with the same employer I finally retired for real this time at Christmas. Company put a stop to travel out of the country last year when COVID started up. All in all a good run but regret all the quality time I missed with family and friends. We...

I think it has a lot to do with sensitivity. Cup thickness, anvil height and primer compound are all variable and can be mixed and matched. They all look pretty much the same but…. what works well in one set up may or may not be optimal in another.

Not all Primer manufacturers use the same composition mix nor do they always change the composition for a specific cartridge. (Have a look at the different MSDS’s sheets.) One reason for the thinner cup is to achieve a more reliable / consistent detonation of the Primary explosive (lead). Not...

Proper Primer ignition, most of the time….. For the basic Mechanism / Function to work you need 3 primary ingredients; fuel, oxidizer and the stimulus of a blow (as you have listed). If you check out the MSDS’s of the different primer manufactures you will find a long and varied list of...

graphite "IN" it ??? This also spiked my curiosity, I doubt VV is talking much about it manufacturing process to anyone. In it or on it, either way it sounds a bit counter intuitive. ( As to burn rate and or flowability) Ken

Interesting. Thanks!

I am still recovering from jet lag and a 12 hour time change.......... I will try and do better next time....... BR Ken

Ullage is a common term used in IB best describing free volume; it facilitates visualizing powder orientation within case that can produce changes in pressure and velocity. Check it out on Google; here is an example...

I do not believe there is any one, fit all answer to your question and is dependent on the specific cartridge. Eg Compressed loads versus ullage, bullet design and distance of travel to obturation. I defer to others more qualified to answer your question than I am. I shot a bit with a couple...

Lacking on both counts but do have a few theory's: Pressure and bullet motion in relation to time and location: It’s the primer output that drives a stress wave / powder compression through the powder to the bullet. A shower of hot particles and gases start the bullet into the engraving...

Lot to Lot: To Measure is to know. I think it’s more of a trial an error thing where you see which way works best and if you are set on only weighing or metering you may be leaving something on the table. I love theory but when it comes to NC load development I think testing is a better...