"First, there is not much need to go above 150gr in 30 cal , because the projectile zip through and excess energy is waisted outside the animal and sometime in some very spectacular ricochets: watch out the background of your target!
If you are going to use cast, then a 1 in 10 twist 308 will do the job and I am pretty sure that the 1 in 12" will stabilise the cast as well.
And they will /should shoot more accurately than in 1 in 8 or 7 twist.( we are talking 100 to 150 m distance here not 50 yards)"
They will stabilise in 1 in 12" twist, the rifle i test them in is a .308 with a 1 in 13" twist with 8.5 grains of Trail Boss the velocity is 1040fps the groups at 50m are one hole of 12mm to 15mm, haven't had a chance
to do any real testing at 100m yet, I don't hunt with the .308 the two I have are match rifles and weigh 6.5 kg, so I have to rely on friwi and others to give me feedback so far it is all positive the 150 HP is performing better than expected..
Bookmarks