I thought F-Class Tactical was limited to .308 and .223??
Someone else can clarify.*Edit: Found it:
http://usfclass.com/what_is_f-class.aspx
Here are some of the basic equipment rules:
F-Class has two categories: F-T/R & F-Open. Both are fired from the prone position.
Briefly, the rules are as follows:
F-T/R
Caliber limited to .223 or .308 (unmodified).
Sling and/or bipod allowed.
Rifle weight limit of 8.25 kgs (approx. 18.18 lbs).
Rear bag allowed
For more information on FTR rules and shooting, please visit the U.S. FTR Team's website at http://www.usftrclass.com/home.htm
F-Open
Caliber limit of .35 and under.
Rifle weight of 10 kgs (approx. 22 lbs.).
Adjustable front rest allowed.
Rear bag allowed.
Rail guns not allowed.
76mm wide forend.
Rifle must be shouldered when fired.
Tables are prohibited.
For precise F-class rules, please visit the NRA website at:
http://www.nrahq.org/compete/RuleBooks/HPR/hpr-w22.pdf
The best shooting rifle I've shot, in the area you described, was a custom F-Class Open in .30-06.
It was a heavy barreled (and I do mean heavy) Surgeon action. I think the muzzle diameter was right at 1.250" and 32" long.
The guy that owned it liked the '06 because he could maximize the extra case length (over the .308) and tailor his powder burn rate to push heavier bullets because they buck the wind better. He could sit there and ring the 1000 yd gong all day.
On a different note, another guy that used to frequent my friends private range took a Savage 110LA like you have and installed a Shaw .308 heavy barrel from a kit (cost about $300 all together- tools came in the kit) and had no problems at all shooting the short .308 in the long action in competition. He super glued a block onto the magazine follower to limit the rearward position of the rounds, although he usually just fired single rounds at the time.
Sounds like an interesting project.
My younger son aquired a Savage 110 LA in a trade a few years ago and if I can get him to go for it I would like to build a project rifle along the same order.
Good luck and keep us updated.