Hey everyone, I’m new here and in desperate need of help. I’ve been reloading for my Remington 700 ADL in .308 1/10 twist. For approximately 3 years. For three years I’ve thought I’ve had my load dialed in. I’m using hornady brass, CCI Large rifle primers, 41 grains of IMR 4895, and 165 grain Sierra game king boat tail hollow points. I’m also using a Vortex diamondback 3.5x10x50 scope. At one hundred yards, on most days I can hold a sub MOA group. Last week I had my first opportunity to shoot out to 200-300 yards.
At 200 yards I had 14 inch drop and a 10 inch grouping with three shots. At 300 I wasn’t even on paper and I had two targets stacked on top of one another. I initially thought my loads were just to light. I went out and bought hornady 165 grain SST superpeformance and headed back to the range.
The results were 2 inch groups at 100 that were very inconsistent and 3 inch groups at 200 that were hitting 2 inches right. 300 was about an 8 inch group and 11 inches in drop.
I’m shooting off bags and taking my time with the whole process. Before my firearm skills come into question, I’m an army veteran and current LEO. I shoot weekly and can hit golf balls at 25 yards with iron sights using my Sig P229 chambered in 357 sig, so I have a fairly good grasp on proper shooting.
Would using a heavier bullet be helpful or am I missing something.
Ive received advice on other forums stating it could be copper fowling. I have not cleaned the barrel in about 60 or more rounds since my groups were holding tight. I’ve also been advised to check all of screws to make sure they were on correctly.
Any help would be appreciated.
At 200 yards I had 14 inch drop and a 10 inch grouping with three shots. At 300 I wasn’t even on paper and I had two targets stacked on top of one another. I initially thought my loads were just to light. I went out and bought hornady 165 grain SST superpeformance and headed back to the range.
The results were 2 inch groups at 100 that were very inconsistent and 3 inch groups at 200 that were hitting 2 inches right. 300 was about an 8 inch group and 11 inches in drop.
I’m shooting off bags and taking my time with the whole process. Before my firearm skills come into question, I’m an army veteran and current LEO. I shoot weekly and can hit golf balls at 25 yards with iron sights using my Sig P229 chambered in 357 sig, so I have a fairly good grasp on proper shooting.
Would using a heavier bullet be helpful or am I missing something.
Ive received advice on other forums stating it could be copper fowling. I have not cleaned the barrel in about 60 or more rounds since my groups were holding tight. I’ve also been advised to check all of screws to make sure they were on correctly.
Any help would be appreciated.