Originally Posted by DJSpradley
I am a new member and was wanting to pick the brains of some of you veterans.
I recently bought a RRA Varmint with a 20" barrel with a 1 in 8 twist. I am currently using blackhills 68gr BTHP and I am recieving .5 to .75 moa groups at 100 yards and occasionally out to 200 Yards (needing to work on fundamentals a little more) but was wondering if anyone had any experience with this bullet gun combo out to 300 and 400 yards. Or do I need to go to the a 75 grain.
My ultimate goal is to have is set a 200 and to be able to make a 500 yard shot though with my talents 300 to 400 is more realistic but would like to have the option if I can get my skills improved over time.
You didn't say, but it seems likely you're talking about 223 or 5.56. ...in which case, 1:8" should stabilize all but the heaviest bullets.
Unless you're handloading, BC will likely take a back seat to how well your rifle likes some particular factory ammo. This is especially true at 500 yds and with favorable conditions.
My 1:8 twist DPMS carbine likes the BVAC ammo with 69gr SMKs. ...and, the price is right. But, it doesn't get along with the same stuff in 75gr.
The 75 gr bullets may help in shifting winds. But, only if they have good accuracy. I'd be tickled with consistent .75 MOA at 200 yds from my AR.
What do you mainly use the rifle for?