Hey guys so in the past week i have chambered two hart barrels one in 7mm rem mag and the other in 300 win mag. The 7mm was cut with a standard manson solid pilot reamer and it seemed to cut slow so i just thought that the new reamer I received was not fully sharpened, But when I chambered the 300 win using a PTG removable pilot reamer I ran into the same problem very slow cutting and a super tight fit. So this is leading me to believe that there is something different with hart barrels such as a tighter bore or possibly harder steel. Has any one else ran into this problem? Is a carbide reamer the solution? Any info will help thank you guys very much.
Gunsmithing Help with hart barrels
- Thread starter M.rolen
- Start date
Did you have the correct size pilot on the reamer with removeable pilots? Also, why would you chamber a custom barrel with solid pilot reamer?
The solid pilot was a customer provided reamer, and yes the bushing size was correct I got on the phone with PTG and they said to send it back so they can inspect the reamer.
I have heard that Hart bores may be a bit tight. Slug it and see.
Both of my Hart barrels that I chambered were about 1thou under nominal, they also both shot/shoot extraordinarily well.
Not all barrel companies use the same steel manufacturer. Even then steel will vary some from lot to lot from the same mill. I wouldn't be to concerned.
Similar threads
Accessories 7mm-300 win mag barrels
