rifle/caliber help. 7mm,30,338??

[IdahoCTD]

Because of the freebore in a Weatherby my load maybe low but in my .30-8mm (almost the same as a .300 Weatherby for capacity) I shoot 76grs of R-22 with 210gr Matrix VLD's @ 3100fps seated about .030" off the rifling. My ES was 8fps for 3 rounds the last time I ran it across the chronograph. I would shoot for ES's below 20. In my rifle the Bergers aren't as accurate as the Matrix bullets so you might order a box and try them if you can't get the Bergers to shoot. Custom Rifle Bullets Built for Accuracy | Matrix Ballistics

 

[sp6x6]

If you start playing with the calcs. and shoot heavy high bc bullets, in most calibers past 1000 they start to pass the light ones and retain more E. A 225 out of my 340 is 25.5 drop @ 1000 and 26.1 for 250. the 250 has 150 more E 1288.My slow poke 338 Norma shoots to same moa at 1500, but gets there w/double the E @ 1465, The ones listed all pass 200 , 210 in same weatherby type case

 

[setandglass]

Because of the freebore in a Weatherby my load maybe low but in my .30-8mm (almost the same as a .300 Weatherby for capacity) I shoot 76grs of R-22 with 210gr Matrix VLD's @ 3100fps seated about .030" off the rifling. My ES was 8fps for 3 rounds the last time I ran it across the chronograph. I would shoot for ES's below 20. In my rifle the Bergers aren't as accurate as the Matrix bullets so you might order a box and try them if you can't get the Bergers to shoot. Custom Rifle Bullets Built for Accuracy | Matrix Ballistics

r22 75.6 was 2770, 2726, 2731, 2782 .fps it showed the best group so far
Imr 79.7 2807 2828 2834

still working on loads

 

[setandglass]

210 grain .631 @ 2750fps at 1000 yds vel 1571 ft/lbs 1150 drop 340.2 10mph wind 63.3

190 grain .570 @ 3000fps at 1000 yds vel 1639 ft/lbs 1133 drop 295.1 10mph wind 63.3

185 grain .549 @ 3100fps at 1000 yds vel 1665 ft/lbs 1133 drop 279.3 10mph wind 63

175 grain .498 @ 3200fps at 1000 yds vel 1614 ft/lds 1012 drop 274.9 10 mph wind 68.6

All are beger bullets, Gives a good idea of speed vs bc. Why shoot 210 when all i give up is 17 ft/lbs over the 185. Not worth the extra bullet drop.

 

[IdahoCTD]

You might try a Redding bushing die to reduce the neck tension on the bullet if you can't get your ES's down. My rifle has a .337 diameter neck and I don't neck size at all. I can put the bullets right back in the case with sufficient neck tension until the cases get worn out and don't spring back.

I would try H-1000 and 7828 also. Those 2 powders have been about the best for me in accuracy/velocity/ES in the long belted magnum cases from 7mm to 338.

 

[sp6x6]

One of the reasons is for some reason that WBY IS shooting like dog meat. I have a 340 wby dang near same and seen me and a lot guys shoot 225 @ 3000. LTLR on this site post velocitys that are scarey w/ his, my shooting coach in school owned every WBY made so I now what the can do. Yours is not up to par. I was just shooting 250 nabs out of mine today at 2850 and that is because when I was young and dumber.I cut barrel to 24.5 and had a brake added. I feel your pain. A buddy shoots 30/338 LAI, 177 gs@ 3680 vel. that would solve your problem This is a different caliber than what you have but relates to my point, my Norma shoots a 300 otm @ 2725 vel, 1000 drop 252 in,39.6 wind 10 full, 2291 E, 200 ZERO

 

[bigngreen]

A guy might try the Berger 215 hybrid, with the WBY throat the hybrid design may shoot better with larger velocity range. I think I'm going to stoke some up in mine and see what they will do, the 210's shoot awesome but I couldn't push them.

 

[Broz]

Why shoot 210 when all i give up is 17 ft/lbs over the 185. Not worth the extra bullet drop.

Because when you hit the animal some of the bullet fragments off and while those fragments are destroying the vitals you will get a nice exit with what goes on through.

I really do not care if I have to dial a couple more moa, clicks are free.

May I ask where you got those velocities? I push the 210 to almost 3000 from a 28 " custom 300 win and close to 2900 in a 26"


Jeff

 

[setandglass]

Because when you hit the animal some of the bullet fragments off and while those fragments are destroying the vitals you will get a nice exit with what goes on through.

I really do not care if I have to dial a couple more moa, clicks are free.

May I ask where you got those velocities? I push the 210 to almost 3000 from a 28 " custom 300 win and close to 2900 in a 26"


Jeff

I have been shooting, that's where the speeds came from. I'm still working on loadsfor the 210. But I already know I'll be lucky to see 2900fps. Got a few low 2830fps. But I could live with 2900.

It may work out but after this year I'm going to have to do something else.

 

[Broz]

If that is a 300 win with 210 Bergers I would try H-1000 and Fed GM215M's and also RWS brass may not produce quite as much velocity as WW or Lapua brass.

But anway I just was wondering as 2750 you used to compare is at the low end of the load. So if you have seen 2830 you are getting there and that will change your number to look better too.

We get 2775 fps froma 28" and 230 Bergers in a 300win with the same powder and primer.

You might also want to look at the 215 ergers. The .696 BC miht appeal to you.

No doubt velocity is nice. But it is not everything. My son took his muley buck at 893 yards with that 230 load at 2775 this past season. One shot and done. Also an antelope at 738 same deal.

Jeff

 

[IdahoCTD]

Jeff,

He is shooting a .300 Weatherby.

A longer bullet might help with the accuracy because of the freebore but the gun might not like VLD's or Bergers or be accurate at all. What kind of groups are you getting at your 2700+fps load? 2830fps load? Are you getting pressure signs at 2830fps or just poor accuracy or both? Have you tried anything but Berger VLD's? A 208gr Amax might be another option as well. They have a .648 BC. If I could get the velocity up with good accuracy I wouldn't be afraid to shoot a 178gr Amax,180gr Nosler BT, 180gr AB, or 200gr AB out to 800yds or so either. What is the length of the barrel on your rifle?

 

[Broz]

Jeff,

He is shooting a .300 Weatherby.

Ok, well that makes even less sense. His trying to compare the heavy verses light bullets with those velocities from a 300 Wby are off quite a bit. I thought they were way off for a Win Mag. So I will butt out here. I would not worry about drops untill I got the velocity discrepancy figured out. That Wby should push a 210 to 3000 easily.

FWIW, I have shot Bergers in many Wby calibers for years and all with great accuracy even though they are off the lands with the freebore.


Jeff

 

[setandglass]

BROZ by all means don't but out shed light,,lol Any info I get is good to me. I'm just working the bergers for now cause I got some for free. Still got other powders to try. If you have a 300 wby with 210"s load to sugest by all means its why I'm here. I know there"s guys that do it better than me everyday.

 

[IdahoCTD]

I wouldn't butt out if you have input to help him figure out what might be the problem with the rifle he has now. I'm throwing ideas out at him but in reality I wouldn't spend a ton of time and money on it if it shows low velocity and poor accuracy with most everything he tries. I'd rebarrel it and spend that money on something worth spending the time and money on. This problem is why I only have 2 factory rifles that I actually use very often. I'd rather spend the money on a custom.