.298 vs .300??? In the planning stages of another 308 MAINLY dedicated to pushing heavies sub-sonic. What bore dia would you recommend?
Gunsmithing 308 bore?
Re: 308 bore?
Not sure of the bore, but if it will be a sub-sonic only, the twist should be 1 in 8" to get a stabilizing RPM on the rounds.
Not sure of the bore, but if it will be a sub-sonic only, the twist should be 1 in 8" to get a stabilizing RPM on the rounds.
Re: 308 bore?
With a subsonic round you dont need the extra pressures that the tight bore does for ya. Go with a regular 300 bore and use a tight twist like a 7.5 to 7.
With a subsonic round you dont need the extra pressures that the tight bore does for ya. Go with a regular 300 bore and use a tight twist like a 7.5 to 7.
Re: 308 bore?
The whole point of the tight bore is to get the higher pressures and velocity. For subsonic there's no need. Bore not really important I would be looking at the twist rate for your given bullet choice.
The whole point of the tight bore is to get the higher pressures and velocity. For subsonic there's no need. Bore not really important I would be looking at the twist rate for your given bullet choice.
Re: 308 bore?
Going 1-8". I had two already. Both stab 240s well.
Going 1-8". I had two already. Both stab 240s well.
Re: 308 bore?
try running 32 cal. lead bullets through the .300 bore. there's a guy at my range doing it accurately and safely.
they are loaded with 6 gr of something, i cant remember what off hand but it is a popular powder.
i imagine your trying to push out jacketed .30 cal heads for variety, but this could give you another option.
try running 32 cal. lead bullets through the .300 bore. there's a guy at my range doing it accurately and safely.
they are loaded with 6 gr of something, i cant remember what off hand but it is a popular powder.
i imagine your trying to push out jacketed .30 cal heads for variety, but this could give you another option.
Re: 308 bore?
Hijack
what is the heaviest pill with SUB loads that can be used in a 1-10 twist 308..CAN SAFE..
Hijack
what is the heaviest pill with SUB loads that can be used in a 1-10 twist 308..CAN SAFE..
Re: 308 bore?
Prob a 190-200 grain at best.
Prob a 190-200 grain at best.
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