Char-Gar
11-18-2006, 04:48 PM
I have been making up some dummy rounds and seeing how the 8mm Karabiner will work in my Mauser Sporter I am building on a good Persian 98/29 barreled action. Looks like thing will work well, but I am curious how the specs stack up against how this bullet fits and works in your 8mm rifle.
My rifle has .312 x .323 barrel specs. With the bullet sized .325 it has no problem being tight in the throat, so the throat must be at least that big. The barrel has little or no wear.
The bullet (Lyman No. 2 alloy) has a nose of .320.
Seated to an OAL of 2.858, the bullet ogive contacts the rifling. This is the maximum length I can get without trying to drive that big nose into the rifling.
Visualy, seated as above, the top driving band, top lube groove and half the next driving band is sticking out of the case.
That leave the gas check and the lubed section of the gas check shank in the boiler room. Not my favorite thing, but I can't see how it can be avoided with this bullet.
I don't see any need to lube the top lube groove that is sticking out of the case. I think I am going to start with 16/2400.
How does all of this stack up with your experience with the 8mm Karabiner?
My rifle has .312 x .323 barrel specs. With the bullet sized .325 it has no problem being tight in the throat, so the throat must be at least that big. The barrel has little or no wear.
The bullet (Lyman No. 2 alloy) has a nose of .320.
Seated to an OAL of 2.858, the bullet ogive contacts the rifling. This is the maximum length I can get without trying to drive that big nose into the rifling.
Visualy, seated as above, the top driving band, top lube groove and half the next driving band is sticking out of the case.
That leave the gas check and the lubed section of the gas check shank in the boiler room. Not my favorite thing, but I can't see how it can be avoided with this bullet.
I don't see any need to lube the top lube groove that is sticking out of the case. I think I am going to start with 16/2400.
How does all of this stack up with your experience with the 8mm Karabiner?