Fireball -
Howdy !
Boy.... your post really hit upon my primary shooting interest of mine !
I like to attend the Western Pennsylvania World Groundhog Shooting Championships. These are held at the Southfork Rifle Range, near Beaverdale, PA. The World Shoot is ususually the last weekend of Sep, every year. They do hold monthly shoots during their annual Summer-long competition, but one can simply attend only those shoots they desire to.
James Peightal' made rilfes used to sweep the championships, until a few years ago. Competition is stiff, and many great shooters/great guns are in attendance. There a a whole host of good gunsmiths right there in PA. Peightal's shop is in Ernest, PA.
The West PA shoot has an " unlimited " ( or custom ) class, and a "factory" class. You CAN register to shoot in BOTH classes, and registration opens in Apr; typically. I have heard that their purse and awarded prizes exceed those of the "Hickory"
In sheer numbers, 6mm and .30 cal rifles are predominent.
Of the "sixes", one is seeing more and more 6 X 47s, and of course; a healthy dose of 6BRs being used. If memory serves, the last Championships shoot I attended there ( 2008 ) a dude campaigning a 6 X 47 won custom class
With the .30s, one will see even the large Magnums being shot, and muzzle brakes abound. There is a sprinkling of .30BR shooters, and they can do well.
It's a healthy climate of innovation, and LOTS of wildcats are being tried/shot.
In Factory. .223s are the most common chambering.
.22-250s are still seen, especially now, with the intro of Lapua brass and the faster rifling twist seen w/ some Savage rifles.
If you are influenced by "equipment lists:, then you'll likely chose/shoot a 6 X 47 for custom class, and a .223 for Factory class. If you think more outside the box, anything is possible.
For either a .224 custom or 6mm custom rifle, I'd go 28" minimum on barrel length; and consider * 29" for the 6mm.
* I say this because my .224 calibre wildcat was a 28" SS
1-8 cut-rifled K & P 5-groove. I went with the bore/groove specs K & P normally provides in .224" calibre.
In hindsight, I could'a gone w/ a 29" for the .224" cal barrel.
Mine was a .224" cal chamber w/ case capacity bewteen that of .22-250... and .220 Swift.
I could have used more vel, or at least... more vel from a 29" would NOT have hurt. Something to think about, when your rifle is a " dual role' " gun.
As a result of my .224" cal experience @ Southfork, I went to use a 6mm for both live varmint and paper matches.
But... that was mostly because my eyes could no longer make out .224" cal holes on paper ( reliably ) @ 300yd, when looking at them w/ a boosted 36X Weaver K36 !! Nobody gets to spot for you while you shoot for record at Southfork.
This makes the use of larger cals/heavier bullets more appealing. In .224" cal, I shot 75" A"-Max. Even the switch from .224" cal to 6mm helped me see more dust being kicked up ( now and again ), which helped me determine where some of my errant shots were landing.
I tried Berger 88s in 6mm twice at Southfork.
My performance at two shoots and then subsequent range testing had me gravitate to use of heavier 6mm bullets, esp 95s and 105s. The max range shot @ Southfork is 500yd.
One can make a dandy 6mm LR gun that can cover both your live varmint/ paper shoot needs....all the way out to 1,000yd.
And, I think that's what you want.
In a 6mm, I'd go 1-8 if you intend to shoot 105s maximium.
A 29" barrel, and whatever bor/groove your custom barrel maker provides. My 29" 6mm is a Broughton SS 1-8
"5C"-rifled Palma taper, that cleans w/o needing to use a brush. It " broke-in " with just one shot !
Here again, I went w/ the bore/groove specs Broughton normally provides in 6mm.
THE most prevalent gun case @ Southfork is the single rifle Plano " Airglide ". When shooting a normal length of pull traditional type stock, the Airglide will accomodate rifles w/ a 29" barrel, and they feature pleanty of verticle space for large turreted /tall mounted scopes.
Night Force is the most common brand of scope in custom class. Not all of us can afford those. My solution was to obtain a Weaver K36, and install a Gene Davis "optical booster " ( priced @ $100 shipped ). The boosted scope works just fine for me, while others say boosters give them optical maladies.
I used a Ken Ferrel 20moa scope base on both the .224" and 6mm rifles, but did not HAVE TO HAVE a tapered base. My wildcat' chamberings had enough case capacity that the chosen VLDs could be put on paper out @ 500yd w/o ever running out of verticle adjustment range on the scope.
And, this was w/ a comparatively skinny 1" tube, not 30mm.
Your thinking on scope adjustment should be in MOA and not so much by using " clicks". You'll be throwing on some verticle as your competition shots range from 100, then 300; and finally 500yd. Things like scope reticle choice and even more so adjustment knob style/design will assume greater importance in you scope selection criterion.
I hope this helps !
Best of luck in your endeavors !
Regards,
357Mag