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I own a Remington 40-XBBR in .222 Magnum (26" barrel) that I bought new in '74. By coincidence, I am loading for it today. Best powders (IMO) are H322, Benchmark, IMR-8208-XBR, and H-4895, with a good 53/53gr flat based match bullet (or a 50gr plastic tipped bullet for critters). The 14"...

What he said... I have polished many of my chambers to a mirror finish with 1,000 grit "Wet or Dry" and oil, and there has never been a problem. Funny about how this wives tale goes - I have heard it both ways, "Never polish a chamber, it'll cause the brass to stick to the walls", and "Never...

All firing pin springs rub against either the bolt body, OR the firing pin. A long, thin spring CANNOT support itself under compression, so if you compress the spring, it WILL bend until it is restrained by something - in guns, it is the pin itself, or the bolt walls. No...

What is the difference???

Awww, wassa matter Vern, did your wittle feelings get hurt when you were prancing around like a childish prince that was acting like a know-it-all??

Me too... it is amazing how much leverage an RL 1050 has. I seated a large primer half way into a 45 case with a small primer pocket, before there was any increase resistance in the lever pull. :( Swagged the small pocket larger, and made a bottle neck out of the primer.

If you believe that perpetual motion is possible, then you slept through physics in school. I'm really glad that you shoot with safe loads, but you have no idea what pressure your loads are producing.

If you knew how black powder was made then, and made now, you would understand that it has nothing to do with water. It has to do with the limited ability of the Chinese to mix powder in those days. Adding water and "doing it all over again" was just their way of making a more through mix...

You are right - I don't belong here.

If you want reasoning, consider this - you make gun power that is used by amateurs with no scientific equipment, to load cartridges - they use loading manuals with the amounts based on tests, and they push their loads to the max + 10%... especially those goofie bench rest shooters that load to...

First, I gave 3,000 as an upper limit. While it is not realistic to measure the actual temperature inside a chamber, it can be approximated by the damage the heated gases do, and I think 3,000 as an upper limit is a reasonable estimate. As to oxygen and hydrogen in steel mills... that...

It is very unlikely that the temperature of a chamber (<3,000 F) could break the hydrogen-Oxygen bond - as even in a Oxy-hydrogen torch, the two atoms combine, not break apart, and that is in the ~5,000 F range.

Actually, you don't know what I am doing... I am head of production and ballistics at a small ammunition company and I have more gauges than you can count. I am a subscriber to SAAMI and have the full set of documents from them. Probably been loading since you before you got your first...

Well... whatever you want to call it, I use it to measure headspace and set FL and form dies for head space all the time. I must be doing something wrong :( :(

The boxes.... then maybe the hired help at the plant could get it right.

It would be REALLY NICE if they color coded them... Oh, wait, that would require thinking ahead :( :( :(

Sorry... but I posted what I have. IF you don't like it, so be it, but if you are calling me a liar, then you have a problem. I NEVER claimed that my scale was as good as your electronic scale - I just posted what I found. If that makes you insecure, then you maybe need some therapy. You...

I'm not going to get into an argument over it - you are right and I am wrong.

I came up with 0.0058, and you came up with 0.004 - I can live with the differences.

"so how much does a single grain od 8208 weigh on your m5 ??" 1/17th of a tenth of a grain... ... Ok, just so we are speaking the same language, please understand that it does NOT read/resolve to a 1/17th of a tenth of a grain. I can't put a single particle in the pan and know it's weight - I...