gamestalker
member
Hello there,
I have two Rem. 700s in 7mm rem. mag. One is about 2 years ols with maybe 700 -800 rounds put through it. The other is about 7 years old and has had maybe 1000 rounds through it. The newest one is a stainless CDL, the other is an ADL not stainless. The older one has an inside bore measurement on the lands, of .280". The newer stainless is .277". I was kind of shocked to see a .003" variance, but both rifles shoot incredibly accurate. Also the depth of the land to grove is .00141 " deeper on the stainless rifle. The only difference in performance between the 2 rifles is the stainless one shoots consistently higher velocities than the ADL by about 100 fps regardless of the bullet being hand loaded. An example is I loaded a Speer 130 grain BT with a charge of exactly 70.0 grains of RL22. The stainless 700 consistently chronographed at 3420 fps +/- 10 fps. The other 700 with the same exact load/bullet chronographed at 3320 fps with a slightly smaller +/-variance of about 8 fps. Even when I heat the older one up pretty good, it still maintains its nail driving accuracy. What is the typical 7mm rem. mag barrel supposed measure on the lands diameter.
I have two Rem. 700s in 7mm rem. mag. One is about 2 years ols with maybe 700 -800 rounds put through it. The other is about 7 years old and has had maybe 1000 rounds through it. The newest one is a stainless CDL, the other is an ADL not stainless. The older one has an inside bore measurement on the lands, of .280". The newer stainless is .277". I was kind of shocked to see a .003" variance, but both rifles shoot incredibly accurate. Also the depth of the land to grove is .00141 " deeper on the stainless rifle. The only difference in performance between the 2 rifles is the stainless one shoots consistently higher velocities than the ADL by about 100 fps regardless of the bullet being hand loaded. An example is I loaded a Speer 130 grain BT with a charge of exactly 70.0 grains of RL22. The stainless 700 consistently chronographed at 3420 fps +/- 10 fps. The other 700 with the same exact load/bullet chronographed at 3320 fps with a slightly smaller +/-variance of about 8 fps. Even when I heat the older one up pretty good, it still maintains its nail driving accuracy. What is the typical 7mm rem. mag barrel supposed measure on the lands diameter.
