6mm 1:12 twist bullet?

[dtalley]

Ok I finally figured out my rifle won't shoot 95gr. bullets so I stepped down to an 87gr VMax and worked up some different loads. Started with 41grains of Win760 and worked up to 45grains. The 41grains shot ok but not as good as I wanted. The more grains the worst the grouping.

My Question is if I drop down to maybe 39 or 40 grains of Win760 if that would help my groups or just drop down on bullet grains and get some 80's or 85's? I don't want to load up anymore of the 87's if it doesn't help

Thanks in advanced...

by the way I will be posting 95 gr Nosler Ballistic Tips in the Classified section soon. And maybe some 87 gr Hornady VMax.

 

[ironworkerwill]

Thats a slow rate for a 6mm rem. A common rate is 1:9 or 1:10. Yea I'd back down to a 75 or 80 gr bullet and see. I would hate to see you buy and dump more bullets tho. Velocity plays a factor too. I'm scratchin my head as to why those 87gr won't shoot better at faster velocity. Is your optics tight? You may just have a recoil issue.

 

[jerkface11]

How far off the rifling are you seating them?

 

[dtalley]

Ironworkerwill, I have loaded 85gr Sierra Softpoints in the past with H4350 powder with really good results. For some reason I thought I wanted to try a heavier bullet and didn't do much research before purchasing the 95 gr. When they didn't shoot well is when I bought the 87gr bullets. My optics is a 3x9x40 Nikon Prostaff and it is all tight. The scope has been on the rifle for many years. I did check all the screws and they were tight.

Jerkface11, I do not know how far off the lands I am. I loaded them to the Case overall length of 2.820 to 2.825. My load data says 2.825 is the max.

I think I may go ahead and drop back down to my standard go to load with the 85gr bullets. I was mostly wanting to shoot some polymar tip bullets.

but still what your replies.

Thanks

 

[jerkface11]

http://www.youtube.com/watch?v=Jv-D1mEI514 Try this.

 

[Clark]

I know that 1 in 14" will not shoot 75 gr Vmax, but will shoot 65 gr Vmax.

 

[dtalley]

Jerkface11,
that is good info. I have always heard about that but have always just gone with the published COL. Do I just want it to barely touch the lands or just a little bit off of them? I would need to do that with every different bullet (brand and grain) that I use, correct?

 

[jerkface11]

Start 5 thousandths off the lands then play with the length to get what your gun likes. If you get a bullet comparator you only need to measure once.

 

[jerkface11]

http://www.midwayusa.com/product/746974/ptg-bullet-comparator-22-24-25-26-28-30-calibers that's the comparator I use. Just slide it over the bullet and measure with your calipers. The measurement you get will be the same for all bullets as far as hitting the rifling goes. Depending on your rifle the magazine might be the limiting factor.

 

[Nanook]

I have a 6mmBR rifle with a 12 twist. It loves 80 Berger varmint bullets.

I use them with Varget at 31.5 grains, with an OAL of 2.20".


Smallest group so far at 100 yards was .200" for 5 rounds.

I'd like to get an 8 twist rifle in the future so I could shoot the heavier bullets you mention in the OP.

 

[dtalley]

Jerkface11,
Thanks for the link. They are out of stock now but I will be getting one.

I have been reloading for many years and have always done the same thing with each caliber that I was taught. Go figure that when decided to try something different I didn't know as much as I thought.

Thanks for all the replies.. That's why I like this forum..

 

[jerkface11]

If you're close to a max load make sure you reduce it before you start playing with OAL. If you jam the bullet into the rifling the pressure is gonna be higher. And you're welcome.