stabilizing 100 gr bullets with 243 win.?

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hawk-i

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I've got a model 70 in 243 that my wife will use for hunting. It's a ranger youth with a 20", 1-10 twist barrel...I'm curious to know if anyone on here is shooting 100gr bullet with success out off a 20 inch barrel. The 1-10 twist 243win, appears to be marginal for 100grs and I'm wondering if the reduction in velocity from the shorter barrel will affect the stability of the heavier bullets.
Thanks
 
I cant speak to the 1 in 10 twist but the 100gr core lokt stabilze well in my cut down 20" rem700 sps varmint barrel. The sps-v has a 1 in 9 1/8 twist so it is a little faster than yours.
 
1-10 should be fine with 100gr bullets.The .244 AKA 6mm Rem first came out with a 1-12 twist visioned as a varminter not a deer rifle.Some people had trouble with 100 grainers so they rebooted it to a 1-9"............Harold
 
My 9 1/4 twist gun's have no problem with 100's... but I have dropped back to the 95's, because they were shooting better.
 
You should have no problem with 100 grain "hunting" bullets in that youth rifle.
You might have issues with the longer, target boattail bullets, though.
Regards, Dave
 
The Savages with their 1:9.25 twist seem to favour the 70-90gr range. A slower twist generally likes a lower grain range.

I tried everything from 58gr VMax up to 105gr Winchester SP out of my Pred 10 with the groups 1" @ 100 in the above noted range(70-90). Everything else was around 1-1/4-1-1/2"

As previously mentioned try the 85-95gr range as an alternative.
 
At least .243 Partitions are available in the lighter weights.Not so for the 1-14" 250 Savages though.Harold
 
I shoot 95 grn.noslers in my Browning 243 BLR. It does not seem to shoot near as well with any 1oo grn.bullets but likes all of the 95 grain leads that I have handloaded.Very accurate for a lever action.
 
Thanks for the replies, I picked up a box of Hornady bullets in both 80gr and 100gr for starters....the fun begins!
 
Id say not enough twist rate for 100 grn, i max out about 90 grn in a 1-10 over that they just dont stabilize at all, not worth the hassle in my target rifle, stick with the 87grn, more then enough to take down anything you might need.
 
"...affect the stability of the heavier bullets..." Shouldn't make any difference. All commercial hunting rifle .243's are rifled for heavy bullets. Even varmint rifles. That'd be 85's and up. Think IMR4350 or the like, just don't expect target accuracy out of an entry level hunting rifle.
 
Sunray, from what i've read on the 243 win with a 10 twist barrel is that 100 grs are on the ragged edge of stabilizing. Any of the longer target bullets the manufactures are saying 8 or 9 twist . The way I understand it is it takes twist and velocity to stabilize any bullet and seeing as the recommendation is for faster twist with 100 grainers, I was thinking maybe the velocity loss from the 20 inch barrel might not work out for me. However, at the range today with 100 grain Hornady spbt's the holes in the target look to be clean and round with no keyholing....accuracy was pretty disappointing though.
 
As we know bullet length rather than weight determines it's stability from any given twist. Style and construction greatly effects a bullet's length. Mono-metal bullets are longer than lead core bullets, a partition makes a bullet a hair longer than a single core bullet, if only by the thickness of the partition, a boat-tail is longer than a flat base bullet, and a tapered bullet is longer than one with parallel sides. So to suggest a standard twist .243 will stabilize any 100 gr bullet is a bit optimistic.

The low cost rifles produced over the last decade or so have shot so well that practical accuracy is pretty much off the table as a point of comparison or criticism, provided that is, that the choice of bullet is suitable for the twist.
 
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They make a 90 or 95gr Partition don't they.Guaranteed to hold together and penetrate,just what you want in a smaller caliber .I use the 100gr Partition in my .250 Classic 700 and get picture perfect performance so far out to 300 yards on deer.Around a foot of penetration broadside give or take...........Harold...........PS the bullet $$$$$$ is the cheapest part of the hunt
 
Thanks again for the replies....once it stops snowing I think I'll try some of the heavier flat base bullets as mentioned. :)
 
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