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wogpotter · March 7, 2011, 12:38 PM

Its an older "PACT model 1" & it has never had a problem with 30 cal rifle bullets so I've just kept & used it with complete satisfaction. I did have an issue with muzzle blast jumping the plugs once, but sitting a sandbag on the cables solved that & it only happened with a muzzle break fitted.

Then I tried using it to check some 125 Gr .357 ammo from a 6" revolver. What a disaster! it seems to be reading blast or something as the velocities vary between 300 & 2000 fps. for every cylinder fired

I've tried it with & without the diffusion screens & at several different distances 10' & 15' mostly, but the problem persists.

Any clever ideas other than buying a new chronograph?

March 7, 2011, 12:38 PM	#1
wogpotter Senior Member Join Date: September 27, 2004 Posts: 4,811	Chronograph can't record pistol loads. Its an older "PACT model 1" & it has never had a problem with 30 cal rifle bullets so I've just kept & used it with complete satisfaction. I did have an issue with muzzle blast jumping the plugs once, but sitting a sandbag on the cables solved that & it only happened with a muzzle break fitted. Then I tried using it to check some 125 Gr .357 ammo from a 6" revolver. What a disaster! it seems to be reading blast or something as the velocities vary between 300 & 2000 fps. for every cylinder fired I've tried it with & without the diffusion screens & at several different distances 10' & 15' mostly, but the problem persists. Any clever ideas other than buying a new chronograph? __________________ Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”? Elderly Hunter: “That's dashed unsporting. Probably Belgium.”