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Tinybob
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Thank you all for the help!
Handloading for Savage 110 in 243
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Tinybob
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Anybody have any load data for H1000 and 85gr Sierra spritzer flat base? I'm using Federal brass and Winchester LR primers.
Nope nope nope nope and nope, my 85 powders run the 4831s h380 and now my new favorite is the 4451, I only scorch that 1000 under 95 and 100 gr pills, my primary on the 85 is Max 4451 or imr 4831, I started with the 4831SC and got gorgeous accuracy with a middle weight charge but wanted more than 2800 fps out of them. I really reckon the 1000 is just too slow, a 95 partition takes a full case, so if you HAD to use it, I'd start at the middle of a 95 gr book load, and work up with little hope, trying a 100 gr charge (47 gr) under a 95 was DISAPPOINTING shotgun style pattern, 95 used 48 gr iirc. And that got compressed with ballistic tips. The 1000 works for 95-107 gr bullets. A Max load of imr 4831 or 4451 will scoot the 85 weights out real nice into a good group. However you should start at the bottom and work up cuz I'm not going to tell anyone how to blow up their gun if something goes wrong.
ETA same primers and fed, rem, win, perfecta, nosler brass. Sierra 85 sp or hpbt or nosler 85 partitions or 86 etips.
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Tinybob
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Sierra suggests a COAL of 2.850" for the 107gr MK. I'm touching the lands at 2.700" with a 100gr Prohunter. Will the bullet shape of the Mk not put me .150" into the rifling?
The MK should be "pointier" than the prohunter, which calls for a longer oal. Now this may not be exactly what the manual says. Its best to always check your own gun for its acceptable length. With 95grn vlds i actually ran out of mag space before the lands on my savage, but all will be different.
Comparing a hunting bullet to a low drag target bullet profile will show the difference quickly, the start of the ogive of the mk should be (as @LoonWulf said) in a different position on the bullet than the prohunter, even Berger vld HP bullets are much sleeker than the ballistic tips. That prohunter has a considerable amount of frontal diameter, more of a pointy round nose really, the matchking is more like a long needle on the frontal profile. Not quite as sleeked out as a vld or uld bullet, but made to cut through the air better than the prohunter by far.
ETA Sierra states that you should be using a 1:8" twist on this one so proceed with appropriate expectations if you haven't swapped your factory barrel.
I think bullet makers should list the rpm speed their bullets should spin at for best accuracy. They could list a twist rate for each 100 fps bandwidth the bullet would typically be shot at for best accuracy.
For example, a 30 caliber 150-gr. spitzer boattail bullet needs to spin about 160,000 rpm for best accuracy in warm weather. It'll leave a 32" Palma barrel from a 308 Win case at 3100 fps. A 1:14 twist has proved great. What's the twist it needs if shot from a smaller case from an 18" barrel leaving at 2300 fps?
For example, a 30 caliber 150-gr. spitzer boattail bullet needs to spin about 160,000 rpm for best accuracy in warm weather. It'll leave a 32" Palma barrel from a 308 Win case at 3100 fps. A 1:14 twist has proved great. What's the twist it needs if shot from a smaller case from an 18" barrel leaving at 2300 fps?
Berger has this twist rate calculator, ive found it to be pretty decent in my meager experience.
Stuff it said would not stabilize generally did not.
Stuff that was marginal, i doubt im a good enough shot, with good enough equipment, to be able to tell.
http://www.bergerbullets.com/twist-rate-calculator/
If youd like to try it with your SMKs, its fun to play with if nothing else.
Stuff it said would not stabilize generally did not.
Stuff that was marginal, i doubt im a good enough shot, with good enough equipment, to be able to tell.
http://www.bergerbullets.com/twist-rate-calculator/
If youd like to try it with your SMKs, its fun to play with if nothing else.
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Tinybob
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Finally got to fire test loads today. Test #1 100gr Sierra spritzer flat base with H1000, using Lee data. Test#2 95gr nosler BT with H1000, using Lee data. Test#3 85gr Sierra spritzer flat base with Varget, using Sierra data. The 85 & 95 bullets were freebies, given to me by a friend. The 100gr grouped best at 47gr H1000. The 85gr grouped best at 38gr Varget. The 95gr did OK, but I'm out of those now. No pressure signs on brass. I'm seating at @ .025" off lands. Had a lot of fun shooting my new 243! Recoil is so much lighter than my 308, so I can stand to shoot a lot more. Please don't call me a wimp for that comment. 
Thanks again to everyone for all the help!
Thanks again to everyone for all the help!I feel no shame in saying that I'll Max out after maybe 40-60 rounds through my 300 wm but thoroughly enjoy shooting the .243 all day long!!! Glad that all worked out so well for you!Finally got to fire test loads today. Test #1 100gr Sierra spritzer flat base with H1000, using Lee data. Test#2 95gr nosler BT with H1000, using Lee data. Test#3 85gr Sierra spritzer flat base with Varget, using Sierra data. The 85 & 95 bullets were freebies, given to me by a friend. The 100gr grouped best at 47gr H1000. The 85gr grouped best at 38gr Varget. The 95gr did OK, but I'm out of those now. No pressure signs on brass. I'm seating at @ .025" off lands. Had a lot of fun shooting my new 243! Recoil is so much lighter than my 308, so I can stand to shoot a lot more. Please don't call me a wimp for that comment.
Sunray
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"...would love for this rifle to shoot..." Most if not all commercial hunting rifles in .243 are rifled for deer sized game bullets. That'd be 85's and up, mostly. Your Savage's twist is 1 in 9.25".
107's are usually match bullets. Cool and all but not worth the extra money in a hunting rifle with a barrel that's not up to 'em. And Match bullets are totally unsuitable for deer. A varmint, on the other hand, won't care. Lotta money for executing ground hogs etc. though.
A Speer 105 grain SP will do everything you need it to for deer anyway. Does extraordinary things to a ground hog too. Partial to IMR4350 myself. So's my rifle.
Must admit I've been interested in those DTAC 115's on the 6mm BR site, for eons. Especially, now that they've been discontinued. They were match bullets too.
You don't need to match prep the brass for a hunting rifle. Doesn't hurt if you do, but you do not need to be that fussy.
Loading .243 is no different than loading anything else.
107's are usually match bullets. Cool and all but not worth the extra money in a hunting rifle with a barrel that's not up to 'em. And Match bullets are totally unsuitable for deer. A varmint, on the other hand, won't care. Lotta money for executing ground hogs etc. though.
A Speer 105 grain SP will do everything you need it to for deer anyway. Does extraordinary things to a ground hog too. Partial to IMR4350 myself. So's my rifle.
Must admit I've been interested in those DTAC 115's on the 6mm BR site, for eons. Especially, now that they've been discontinued. They were match bullets too.
You don't need to match prep the brass for a hunting rifle. Doesn't hurt if you do, but you do not need to be that fussy.
Loading .243 is no different than loading anything else.
midland man
Member
yep i just ordered a savage axis left hand bolt action 243 rifle that's soon coming! so i used to load and shoot 100gr bullets in my last one and that's what i'll be shooting again! but i do want to try some light varmint bullets in the 55,58gr class just to see if it'll shoot accurately so what do ya'll think??
I'm running 55 gr btips over a midweight charge of 4166 on an old 788 18" bbl with iron sights and doing great, I wanna try varmageddon next. With the savage faster twist longer bbl, you'll have to watch velocity on varmageddon and dogtown bullets, they'll shred from too many rpms, I reckon 3200-3600 is as fast as I'd try for.
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Tinybob
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Got out for a while and shot today. Had a great time and got a couple pics for my efforts. I feel this is great accuracy for a hunting rifle, with a barrel to hot to touch.
Thanks to those here that advise me so much!
Thanks to those here that advise me so much!
Not bad at all for.....what??? 600 yds??? ;p honestly though enjoy it, I've been too busy to do more than look up numbers here and there lately, so throw some more downrange for the rest of us will ya?
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Tinybob
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You bet I will! I'm totally sold on this lil 6mm pill! I'll keep tweeking here and there trying for better. Thanks for the encouragement!
midland man
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yep the 243 is a fun little round
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Tinybob
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Sorry everyone that was at 100yrds. I got back behind my house last week and cut myself a longer shooting lane. It's nice to be able to shoot at home!
midland man
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nice that's what I have wanted forever, a place out in the country!!
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Tinybob
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Yep it's great out here where I live! I bet my closest neighbor hates me, but they don't complain any. I try to shoot during the weekdays when they're not home, but now and then my schedule puts me at different times.
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Tinybob
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Put a new "ultimate varmint stock" on my rifle and started loading with pulled ATK 100gr soft point/flat base bullets with cannelure. Accuracy went from 0.546" to about 3 1/2" at 100yds.
I was using new Sierra 100gr soft point/flat base with no cannelure.
Seated bullets at the same depth I've been using.
Brass prep hasn't changed.
Powder is the same H1000, charge is the same 46.7- 46.8grs.
Used Federal 210 and Winchester LR primers.
Different primers were segregated.
Temperature was about 15° warmer today than when I shot best group.
Humidity is about the same.
Wind is the same.
After shooting the new loads I noticed:
A few primers were slightly flattened, most were normal.
No other pressure signs.
Head space is good.
I checked COAL and found about a 0.010" swing in seating depth.
The old stock had no action bedding, barrel was free floating. New stock has action screw pillar bedding, barrel is still free floating.
Now for THE QUESTION:
Where do I start to recover my accuracy?
Should I re-develope my load with recommended seating depth?
I was using new Sierra 100gr soft point/flat base with no cannelure.
Seated bullets at the same depth I've been using.
Brass prep hasn't changed.
Powder is the same H1000, charge is the same 46.7- 46.8grs.
Used Federal 210 and Winchester LR primers.
Different primers were segregated.
Temperature was about 15° warmer today than when I shot best group.
Humidity is about the same.
Wind is the same.
After shooting the new loads I noticed:
A few primers were slightly flattened, most were normal.
No other pressure signs.
Head space is good.
I checked COAL and found about a 0.010" swing in seating depth.
The old stock had no action bedding, barrel was free floating. New stock has action screw pillar bedding, barrel is still free floating.
Now for THE QUESTION:
Where do I start to recover my accuracy?
Should I re-develope my load with recommended seating depth?
midland man
Member
I use win 760 at 37.6grs with the sierra 100gr psp flat base and my savage axis shoots very well. I seat mine to a case over all length of 2.650 so you might try that and see if that helps on the length! plus I also use cci large rifle mag primers with mine.
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