A couple questions about this 6mm. I have never had one or know someone who does. It would be a hunting rifle with the occassional long shots for practice, not at any time a competition gun.
With good barrel care, good scrubbings and watching the heat, how many rounds could a person expect to get before things start to go bad and "Hunting" accuracy starts to fade.
Then with a good trigger finger and the stars aligned, what is a reasonable distance one could expect to get for (large deer and down) sized animals. Bullets would more than likely be the 115grn VLD or the 107 MK loaded on the warmer side of things.
I have a 6/284 with a 10 twist 26" Shaw #2 coutour. I origionally built this for a Coyote gun when I was shooting yotes using hounds. That is why I wanted a fast shooter. I was hard on it at first by shooting 70 SMK's @ 4100 fps. Then I started using the rifle for deer and Antelope and now load 85 gr game kings. It will not stabilize larger bullets well with the 10 twist. This rifle is a pleasure to shoot and last weekend I wacked a steel plate at 550 in 10 mph wind , first shot. I would not hesitate to shoot deer out to 600 with my rifle. As for the bore life, I can tell you due to the first round of my reloading with small bullets and high velocity the throat does show a bit of erosion and I have roughly 700 rounds through it.
So, I would advise doing just what you said and use an 8 twist with 105 bergers. I think you would like the results.
Location: The rifle range, or archery range or behind the computer in Alaska
Re: 6-284 questions
I would treat it like my 300 RUM hunting rifle. I developed loads for it, learned the real drops for the 2 or 3 loads selected, shoot maybe a handfull of rounds through her a year and leave her in the safe the rest of the time while I practice more with less of a barrel burner.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
I have one and the throat is very rough from shooting 600 yard matches with it. But, it still shoots bug holes.
I would estimate that I have around 3000 rounds through it.
Longest kill with it is 605 yards with the Nosler 90 grain Ballistic tip.
I have used this rifle to introduce non shooters and youger hunters to longer range shooting.
My Faculty advisor at the US Army Sergeants Major Academy was "Hank the Tank Gallahan" and he was an SF sniper and SF sniper instructor. He was shooting his bolt gun one day and his wife was at the range with him. She had never fired a center fire rifle before.
I set my rifle up on the bench and turned it over to her and coached her on the 600 yard gong. She started ringing that gong and I thought Hank was going to have a fit. She kept ringing that gong over and over....... Hank actually asked us to stop shooting the gong as he had a rifle malfunction and did not hit the gong that day.
Anyway, he liked the caliber and the rifle so much, he took his Rolex off and sold it the next day at a gun show and ordered a Hall Express in 300 win mag, 308 and 6x284.
My preachers kid (now a marine) was 14 years old and he had never shot farther than 100 yards. We set him up in the elevated shooting house on the 1000 yard food plot and he took his first LR deer there with that 6x284.
They are fun and accurate. I am sure you will enjoy the one you get. If you are ever down my way, I have some ammo loaded and you can shoot it on my 1000 yard range.
The 6-284 is a great round but care must be taken when using it. As we all know, its not a high volume shooter. I look at it as a high powered long range varmint hammer or a small to medium big game chambering.
I got into long range hunting with a Win M70 heavy Varminter with a 30" 1-8 3 groove Lilja. With the A-Max or Berger bullets, its limited to a 3250 fps velocity ceiling because of the fast twist and high baring surface compression percentage. The 107 gr SMK on the other hand would allow any velocity I could throw at it and I loaded it to 3500 fps.
I have made over 4 dozen one shot kills on chucks and yotes at ranges over 500 yards. She has 11 one shot kills over 1/2 mile and three over 1000 yards with the longest being 1128 yards.
The rifle has been semi retired and lives in the safe these days but I will never get rid of it.
If I were going to build a big game (deer) rifle on this caliber. I would likely go with the 6-06 instead simply because its easier to form with a 25-06 case and it feeds DRAMATICALLY better then the 6-284 in pretty much any receiver type.
performance of the two are nearly identical with a slight, and I mean slight edge going to the 06.
Both would kill deer out to 1/2 mile if hit properly, I do not recommend this, 400-500 yards is about my personal max for any 6mm.
For a hunting rifle, these rounds would last you a lifetime of hunting.
Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.