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We strongly recommend that in most cases quoted loads be derived from recognized loading manuals and if possible these should be referenced. Where loads do not have back-up reference data available, for instance with use of an unusual powder, then posters are asked to please detail their method for establishing their data. Irresponsible publishing of unsubstantiated ''guestimated'' data is deprecated and may be heavily moderated.

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Old January 15th, 2008, 12:18 AM   #11
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That is a .050 difference, or 50 thousanths. That is a lot of difference.
Well, that's what I was getting at although I only reload for rifle currently.

Quote:
I don't reload for pistol calibers (yet). You are talking about 5/100ths of an inch here. Me-and my rifle calibers, I'm worrying about thousandths of an inch. .003 to .006 can mean alot in rifle loads especially if you're already within 3/1000ths of touching the lands. Did you see any signs of higher pressures with the 1.95"? Chamber one to see if the rifling engraves the bullet? Again--just a rifle reloader here, to me 5/100ths is an OAL change I'll never see.
Do yourself a favor and quit whatever you're doing and research this fully---before you have a bad KB! Seriously.
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Old January 15th, 2008, 12:40 AM   #12
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Originally Posted by friesepferd View Post
woh, i didnt know that. is it better to just not use lead then?
or at least clean it a lot?
Heckler & Koch - Group Website

Two-thirds the way down:
Quote:
...
polygonal bore profile for increased velocity, easier cleaning, and longer barrel life
...
You can use lead in barrels with poly rifling but you have to clean the barrel very often. For that reason, I switched to a KKM stainless steel "normal" rifling barrel.

The correct term for the rifling profile is hexagonal vs octagonal. I just call it poly cause it's easier. These are the Glock profiles. All 45 caliber guns have the profile on the right, all other calibers look like the left.

Quote:
Why do the .45 caliber Glocks have octagonal rifling vs the hexagonal rifling in the other calibers?
The octagonal rifling provides a better gas seal in the large caliber .45 ACP. Notice how the image on the right has a lot less space between the bullet & barrel compared to the image on the left:


The Glock FAQ [Barrel Information]

Here is a good read on lead in Glocks. The OP is a new member I brought over here from Glocktalk. I think he is cz93x62 over here. He uses a similar name elsewhere, over on GT and on the Castboolits site. Freisepferd, when you start bullet casting, head on over there. Quite a few of us in the UP.

Glock Demystification--Step 1 - Cast Boolits
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