For all intents and purposes, the 22" barrel won't shoot any different than a 24" pipe, except for a slight decrease of about 80 +/- fps velocity as mentioned by ChesterGolf.
Shooter skill or error is far more important than length of barrel, even though I admit that when shopping for a new 30-06, I went for a Remington 700 stainless SPS with 24" barrel and standard Limbsaver Recoil Pad. I believe the 7mm Mag in this model has a 26" barrel.
Remington 700 SPS Stainless
In short, longer is better, but don't let the barrel's length be a major deal breaker.
Good luck and happy hunting!
P.S. Stainless price at Sportsman's Warehouse for all calibers is $469. Blued is $399.
Today's headlines read, "Hunter Dies of Heart Attack!"
I don't know how many times I have seen that headline in the past 16 years that I have lived in Colorado.
I moved here in 1994 via the U.S. Army to Ft. Carson, Colorado. The "Mountain Post" as it is sometimes called.
When I arrived here, in pretty good shape, the unit told me that I could not participate in P.T. (physical training) for at least 30 days. Now, I had just come from an overseas tour in Korea and was stationed in the...