TheDomFather
Member
- Joined
- Feb 22, 2017
- Messages
- 469
Folks,
This is my go to community for sharing information and learning. I wanted to share with you my journey for .224 Valkyrie.
I had purchase a full upper through Primary Arms, made by Cross Machine tool. very nice upper well made with a 22" barrel, I went through a massive amount of load development and failed to find any bullet/powder/oal combo that would consistently shoot sub MOA groups. I tried Federal Factory fusion ammo. Shot a .4" group and a 3" group back to back. Searching around the internet most people are having the same problems.
Fast Forward. I think the barrel on the CMT upper was chambered with a bad reamer and was also a 1:7" twist and Sierra states 1:6.5" twist should be used with the 90gr SMK.
I scrap the barrel (which is stuck in the upper and I cannot get it out) another problem for another time. I purchase a new 22" 1:6.5" barrel from Wilson Combat. I get the barrel installed and start taking chamber measurements and see that my projectiles will have to jump 137 thousands to the lands. I call Wilson Combat and they tell me yes this barrel was reamed with an improper reamer and is bad. Send it back and we will send you a full refund including the shipping.
Net net there are a bunch of bad barrels out there that have been reamed improperly. Be careful before you buy a rifle, upper or barrel and call the manufacturer and ask them if this has been properly reamed before you purchase.
See my videos below for more detail.
Rant over!
Thanks,
Dom
This is my go to community for sharing information and learning. I wanted to share with you my journey for .224 Valkyrie.
I had purchase a full upper through Primary Arms, made by Cross Machine tool. very nice upper well made with a 22" barrel, I went through a massive amount of load development and failed to find any bullet/powder/oal combo that would consistently shoot sub MOA groups. I tried Federal Factory fusion ammo. Shot a .4" group and a 3" group back to back. Searching around the internet most people are having the same problems.
Fast Forward. I think the barrel on the CMT upper was chambered with a bad reamer and was also a 1:7" twist and Sierra states 1:6.5" twist should be used with the 90gr SMK.
I scrap the barrel (which is stuck in the upper and I cannot get it out) another problem for another time. I purchase a new 22" 1:6.5" barrel from Wilson Combat. I get the barrel installed and start taking chamber measurements and see that my projectiles will have to jump 137 thousands to the lands. I call Wilson Combat and they tell me yes this barrel was reamed with an improper reamer and is bad. Send it back and we will send you a full refund including the shipping.
Net net there are a bunch of bad barrels out there that have been reamed improperly. Be careful before you buy a rifle, upper or barrel and call the manufacturer and ask them if this has been properly reamed before you purchase.
See my videos below for more detail.
Rant over!
Thanks,
Dom