Re: Remington 700 SPS Varmint accuracy
I have SPS 308 and I was worried the 12 twist would not like 175gr bullets but shooting 168 and 175 GMM shows no difference. Muzzle velocity for GMM 175gr is right at 2600fps average, have no idea on 168gr.
I shot about 500 rounds with AE 150gr learning fundamentals before shooting GMM. Back then I was shooting 50 rounds a week almost every week over the winter. Average with AE was 1.5moa until I got to around 300 rounds then they started tightening up to under 1moa. My SPS does not like to have a clean bore. After cleaning with Butches and scrubbing with a brush at 50, 100, 300 and 500 rounds, took many rounds to get real tight again. One quick bore cleaning with a single patch of BBS and Butches Bore Oil from 500 rounds now to 1300 rounds and still shoots tight.
My XMark trigger felt like sand was in it, broke at 5.5 pounds from the factory. My first day out AE was grouping 2.5moa average, I had one or two over 3moa mostly I was jerking the trigger. After about 100 rounds the trigger smoothed up some but upgrading to the RB trigger around 200 rounds was the most improvement for parts breaking clean at 1 pound.
SPS Vermit 308 with HS stock, Rifle Basix LV1K Trigger, Super Sniper 10x and Harris Bipod.
Some of my first groups using Federal GMM. I almost always use 1/4 inch rule graph paper for targets. For some reason, decimal was put in the wrong place.
One of my best 5 shot groups using GMM 175.