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Post by Mitch HanK Sauer on Aug 27, 2003 0:05:22 GMT -5
What type of ammo is hardest on the gun or bore? I know the major factor is probably the type of load, but also what about the type of ammo...?
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Post by HogRider on Aug 27, 2003 0:45:38 GMT -5
I'm just guessing: Jacketed Bullets are hardest on the bore because of friction and material hardness compared to lead. And steel cases (Wolf etc) are harder on the extractor and the chamber. Worst possible combination: Eastern European surplus ammo: FMJ Bullet, Steel Case, Corrosive Primer. I think it can't get any harder than that. But I'm not sure.  |
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Post by DoubleAction on Aug 27, 2003 1:54:52 GMT -5
Mitch;Adding to that what Hogrider has already said;for handguns the rate of twist is much less than that of a long gun,and less length for a bullet to travel,creating less friction in a handgun barrel with an average twist rate of 1 twist for every 16 inches of barrel.The standard rate twist for revolvers is 1 in 18 3/4 inches with the exception of 1 in 14" for the Python.It takes alot to burn out the rifling grooves of a forged heated treated barrel of a handgun.I usually limit my barrels to sessions of 500 rounds of FMJ,standard factory loaded ammo in the .45 acp.My experience with lead bullets is fouling build up faster in the barrel than the FMJ during a session of around 200 to 300 rds.Remember too that the .45 acp in the 230 gr. FMJ standard factory load, only has a velosity of about 800 Feet per second,which contributes even less to the friction.
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