Scharfschuetzer
New member
The nice thing with the AR-15 is that you can taylor upper receivers for specific duties.
My basic lower is a Colt with a double stage trigger. For match shooting in the service rifle class, I use its HBAR upper receiver. For the open rifle class I have an upper without a handle and with a 28" heavy Krieger barrel. It has a sight base that will accept a scope sight or mount a Redfield Palma or International aperture sight. Without much effort, I could set up another upper receiver with a varmint weight barrel, 10X scope and a 1-12 twist barrel for my favorite prairie dog bullet, the 52 and 53 grain SMKs.
Still, were I limited to just one barrel twist, I'd go with a 1 in 8 (my next barrel), but my HBAR's 1-7 twist does pretty well from the 52 grain SMKs for reduced courses and varmints up to the 80 grainers for use at 600 yards.
My basic lower is a Colt with a double stage trigger. For match shooting in the service rifle class, I use its HBAR upper receiver. For the open rifle class I have an upper without a handle and with a 28" heavy Krieger barrel. It has a sight base that will accept a scope sight or mount a Redfield Palma or International aperture sight. Without much effort, I could set up another upper receiver with a varmint weight barrel, 10X scope and a 1-12 twist barrel for my favorite prairie dog bullet, the 52 and 53 grain SMKs.
Still, were I limited to just one barrel twist, I'd go with a 1 in 8 (my next barrel), but my HBAR's 1-7 twist does pretty well from the 52 grain SMKs for reduced courses and varmints up to the 80 grainers for use at 600 yards.