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Most Popular Chamberings for LG & HG @ 1,000yds

The last time i shot in competition at 1000yds was at Manatee. And took second in a shoot off having been beat by a 7mm rum. Actually that happened twice and i got beat by the same LAWYER. It seemed to me the 6mms were great when there was no wind, but the bigger longer bullets worked better when the wind blew if the had the speed to take advantage of the higher BC. I think unless you can predict the weather you need one of each. When a 6BR or BRA hits steel at 1000 got to watch close to see any movement, my 300 grain SMKs were another story. The man that let me shoot his rifle at first time i ever shot at 1000yds or over told me, " At longer ranges you only have 2 friends BC and speed and you need to use both."
 
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Been wondering why you don't hear of 7mm/.284's in the mix.
Since I started experimenting / altering cases in the .284 area,
bullets have been a slight draw back. Would yinz say this is
the problem ?? In F-class the .284 Is a staple on the table,
but not so in BR. Any insight ??
I was thinking 6 dasher and 300wsm are quite far apart to be the two dominant choices.
Kind of the same question.
Can anybody clear it up for us?
 
The Dasher or any BR Imp case is super accurate, light recoil makes for fast follow up shots in the same condition
300 WSM is almost as accurate, heavy recoil upsets the bags with the torque, but big heavy high BC bullets get the job done but slower. .... jim
 
Been wondering why you don't hear of 7mm/.284's in the mix.
Since I started experimenting / altering cases in the .284 area,
bullets have been a slight draw back. Would yinz say this is
the problem ?? In F-class the .284 Is a staple on the table,
but not so in BR. Any insight ??

Not really sure.

The progression in major LR BR cartridges seemed to have been the big 30s, then the 6.5x284, then the 300 WSM, then the 6mms. Occasionally a 7mm was tried and the 7 SAUM seemed to be the best of them. There used to be more variety than what there is now, similar to what happened with short range BR and another 6mm.

In most conditions, the BRA and Dasher are very hard to beat, especially in the light gun class. That is the 800 lb gorilla in LR BR. Also, the really high BC 7mm bullets can be difficult to tune, where as the 30 cal bullets in similar BC ranges seem fairly easy to tune. The high BC 6mm bullets like the 110 SMK and 109 Berger are difficult to tune as well.

So the simpler solution is to shoot a 6mm most of the time and a 30 cal in poor conditions or as a heavy gun. That seems to what everyone has got used to.

That doesn't mean a 284, a 7 SAUM, or even a 6.5 Creed couldn't do very well. In fact, if someone would take the time to find the magic with those cartridges, others would follow.

Speculating more. The 284 probably doesn't have enough case capacity to shoot a very high BC bullet fast enough, meaning it would probably be shooting bullets within .1 BC of the 6mms which isn't enough to overcome the recoil difference in a light gun. Lighter recoil means faster shot strings which keep all shots in the same condition and results in smaller groups. In a heavy gun, the rifle can be built heavy enough to handle the recoil of the easy to tune higher BC 30 Cal bullets.
 
How "heavy" (in #s) do people tend to build HGs in 300 wsm? Are larger Dia barrels than 1.25 used? Thanks

I am aiming for 30 lbs. I am using a 1.45 straight. I have on order a 1.45" for 6" tapering to 1.2". Others are using a 1.35" straight.
 
I have been shooting a 6BRX light gun and a 284REM heavy gun. I am now getting a new barrel chambered for my light gun . I used the 284 for heavy gun and 1000 yd F Class.
I finally realized that I was being beaten by 6BR's! My 284 did well in some matches for heavy gun, but 6BRs
still nipped on my tail.
I was going to put a 6.5 X47 barrel on my heavy gun but figured, why nor use a new 5BRA for both.
 
6mm and 30 cal in LR BR are driven by quality custom bullets. 7mm bullets are basically limited to 180 Berger hybrids which CAN shoot really well if you get a good batch, sort them, sort some more, and then sort them again. A 284 Win/Shehane can shoot very small but is handicapped by the lack of consistent custom bullets. I’ve never had one but it’s my understanding a 7SAUM has a lot of potent. The BC advantage of the larger calibers will help at 1k but in my experience the juice ain’t worth the squeeze at 600.
 
I own a Dasher that is capable of firing 10 record shots in under 20 seconds. It weighs approximately 70lbs and has a break. It is possible to fire a record string and never push it back. With everything in line it’s basically a legal rail gun on sand bags. That being said, 1000yd bench rest is all about testing and quality custom bullets. Bullets are the key and knowing how to tune them. WSM’s shoot very well, in fact the 10 shot Williamsport record is currently held by one. There are more quality custom bullets being manufactured in 6mm than any other caliber. Barts, Roy Hunter, and Tom Vacobs of VT are some of the best. I have sent many WSM’s home and they have done the same. Just remember that there’s a cost associated to that loaded round.
 
I own a Dasher that is capable of firing 10 record shots in under 20 seconds. It weighs approximately 70lbs and has a break. It is possible to fire a record string and never push it back. With everything in line it’s basically a legal rail gun on sand bags. That being said, 1000yd bench rest is all about testing and quality custom bullets. Bullets are the key and knowing how to tune them. WSM’s shoot very well, in fact the 10 shot Williamsport record is currently held by one. There are more quality custom bullets being manufactured in 6mm than any other caliber. Barts, Roy Hunter, and Tom Vacobs of VT are some of the best. I have sent many WSM’s home and they have done the same. Just remember that there’s a cost associated to that loaded round.
thats some great info Thanks
 
Hi Matt- Its sure good to see you around here. Thanks much for the info. I almost wonder how to make it that heavy. Hope you have a Very good 2021. Kim H
A 30 inch 1.450 weighs around 10 pounds, I believe. Add an action, a block, scope and You are close to 16 pounds. Stocks are usually 6 inches wide up front and 2 inches in the rear. They are usually longer, like 38 inches. Now add rails, front and rear and it starts to add up.

A few are fiberglass and some are wood and they usually add weight. Mine is a 6 inch by 2 inch thick plank of aluminum with a stainless butt piece bolted on. It weighs 65 pounds.

I added a pic, but had to do it seperately because I didn't have one on my tablet where I posted from. Mattt
 
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