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Offline tbone

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bullet weight affecting accuracy
« on: September 13, 2005, 07:59:03 AM »
My 300 WM is shooting extremely well with three types of 180 gr bullets (less than 1 MOA).  I was going to try some 165 gr and 200 gr loads to see how they work.  Is the twist of the 300WM "tuned" for the 180 gr bullets or can I expect the other weight bullets to perform just as well?
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Offline huntswithdogs

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bullet weight affecting accuracy
« Reply #1 on: September 13, 2005, 10:15:39 AM »
Unfortunately, you'll never know til ya try em. My current 300wm doesn't like anything below 180 gr. Another that I had would shoot PATTERNS with165gr but would shoot sub MOA with 150s. Doesn't make sense,huh?

Find a buddy that reloads and"borrow" some bullets to try.

HWD
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Offline Lawdog

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bullet weight affecting accuracy
« Reply #2 on: September 13, 2005, 10:49:02 AM »
As 'huntswithdogs' said,

Quote
Unfortunately, you'll never know til ya try em.


is right.  Most factory .300 magnums come with a twist rate of 1-10”(suitable for bullets up to 220 gr.).  All my .300 magnums shoot most bullets from 150 to 200 gr. very well with best accuracy coming from those in the 165 gr. range.  One of the main reasons I switched to Barnes TSX in the 165 - 168 gr. versions.  They will penetrate as well or better than Partitions in 180 - 200 gr.  Just a thought.  Lawdog
 :D
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Offline Redhawk1

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bullet weight affecting accuracy
« Reply #3 on: September 13, 2005, 11:31:31 AM »
I have to always work up loads and find the most accurate. Just because on weight won't work with a certain load does not mean it won't work will with a different powder charge.  That's what make shooting so much fun.  :D
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Offline rockbilly

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bullet weight affecting accuracy
« Reply #4 on: September 13, 2005, 11:53:49 AM »
:roll: different guns like different diets.  I have a Sako .270, my son shoots a Browning A Bolt .270.  My gun will handle a 180 grain bullet great with several different loads and powder brands.  His gun will not shoot a 180 grain bullet.  He is all over the target regardless of load or type of power.  He can go down to a 150, which performs quite well in my gun, and hold 1 inch groups a 100 yards.  I have noticed the same problem with some of the .22s we shoot, both of us have winchester model 70 hornets, they do not always perform the same with the same ammo.  Mine seens to like the lighter grain best.  The winchesters are identical. Just a few numbers difference in serial numbers.  This is one reason I do not always agree with someone on factory ammo, what is a tack driver in your gun may not stay on the paper for me.
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Offline SuperstitionCoues

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bullet weight affecting accuracy
« Reply #5 on: September 13, 2005, 01:26:59 PM »
Quote from: Redhawk1
I have to always work up loads and find the most accurate. Just because on weight won't work with a certain load does not mean it won't work will with a different powder charge.  That's what make shooting so much fun.  :D


I have to agree witih Redhawk1 on this one, and expand it by suggesting that sometimes even a different primer and a different powder will yield better (or worse) results.  I have a .30-06 that will take anything and shoot just as well with 165's vs. 180's, and I have a 25--06 that will take only 117's.  Doesn't matter what brand 117, they just have to be 117 grains.  Put a 100 gr. or a 120 grain in the chamber and you get a shotgun pattern.   I am still working out the bugs with the 7mm WSM - starting with loose scope mounts.  

Best thing I can say is experiment, and take good measurements on your group size(s).  Write copious amounts of notes on what worked, what didn't, where you were at when it did what, what was going on around you (distractions, etc.) and what the weather conditions were.  Some of this information will end up being extraneous, but you won't know what you need until you have enough data to address your problem.

Good luck - I'd really like to hear what your results are.

Matt
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Offline Gregory

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bullet weight affecting accuracy
« Reply #6 on: September 13, 2005, 02:03:11 PM »
Quote from: rockbilly
:roll: different guns like different diets.  I have a Sako .270, my son shoots a Browning A Bolt .270.  My gun will handle a 180 grain bullet great with several different loads and powder brands.  His gun will not shoot a 180 grain bullet.  


Who makes 180 gr.  .270 bullets?  I thought they maxed out at 150-160 grains.
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Offline Zachary

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bullet weight affecting accuracy
« Reply #7 on: September 13, 2005, 04:26:54 PM »
Most, if not all, factory loads max out to 150 grains.  There are bullets available for reloading that are 160 grain, but I have never heard of a .277 bullet higher than 160.

Zachary
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Offline tbone

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bullet weight affecting accuracy
« Reply #8 on: September 14, 2005, 02:18:08 AM »
Thanks for the input.  I should just be happy with the 180's but I am a tweaker to the core. I'll keep you posted.
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Offline SmackFactor

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bullet weight affecting accuracy
« Reply #9 on: September 15, 2005, 05:45:03 AM »
Hello,
Hawk bullets makes a 165 and 180 grain bullet for the 270

http://www.hawkbullets.com/

Regards
Jerry
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