Site Needs .243/.243AI Loads & Comments

[wildcat284]

In my Sako AII 24 inch varmint rifle, with a medium contour varmint barrel the 70gr Nosler Ballistic Tip Varmint and 42.7grs Varget gave me the following 5 shot group at 125 yards of 0.354. Velocity of that load taken at 5m from muzzle,range rules mean that I have to shoot through a tire tunnel), so couldn't place chronograph close to muzzle are as follows:

shot 1: 3463fps
Shot 2: 3463fps
Shot 3: 3454fps
Shot 4: 3445fps
Shot 5: 3445fps.

I use Lapua .243 brass exclusively with Federal 210 primers.

By the way, the Sako has never been bedded, it is an honest Sako factory rifle . Only thing that has been done to it is the trigger lightened.

Regards,

Michael.

 

[CdnHotshot]

243 Ackley Improved
1:10 x 26" PacNor SuperMatch heavy barel
BAT R/B R/P single shot with Jewel Trigger,
Robertson/Stiller stock.
.274" No-Turn Lapua chamber from Pacific Tools
90 grain Scenar on Lapua brass
48.0 RL19 = avg. velocity 3500 fps
.250" @ 200 yards

 

[paulT]

Accuracy Load in my 243 1 in 10 Blaser rifle, Berger molly 95g VLDs,seated into lands, Lapua brass, 46.6 n160, fed match prm, .240 at 200y prone with by and mono pod. paul.

 

[Ackman]

Pretty hard to beat W760......26.5" Pacnor 13" twist, very tight chamber with .273NK and NO freebore.....

48.7gr - W760 - 70TNT - BR2 - PMC brass = 3858,fireforming)...... 3/10"
Never got around to chronographing formed cases. They're probably about the same.

Primer tests with 760 and 70TNTs were interesting.....Fed 210M vs CCI250.....the 250 dropped velocity by 30fps or more, but SD was dramatically lower in all loads. In one max load, SD with the 210M was 37.8, while a CCI250 dropped SD to 4.4. I've tested that CCI primer against the Rem. 9-1/2 in a 22-250AI and had the same results.

 

[Grand]

Stumbled on this one last month. Holland .243 AI, Pac Nor 25" 1:12, Lapua Brass, F210M, 42g Varget, 75g V-Max touching lands. 3600 fps and SD of 2. 3-shots @ 100 yds.

 

[chino1969]

Thanx for that post. I have a 1:12 Pac Nor chambered for .243 A.I. with a .270 neck that has just been broken in. I had this barrel put together to shoot everything from 58 grn. up to perhaps 80 grns. and will start developing loads; the 75 grn. V-Max is one of the bullets I intend to shoot.
Chino69

 

[Grand]

Chino: Don't overlook the 55g Nosler BT and a case full of Varget. I was getting 4150 fps. The Nosler has a high B.C. for its weight, and shoots damn flat. Downside, it heats up a barrel fast.

 

[jacquemet]

I just tested a new promising load for a standard .243 Winchester. The rifle is a Tanner with a 28 inches Lothar Walther barrel.
This load holds with a pretty good regularity 1/4 MOA groups of 5 shots at 200 meters .... despite the fact that the barrel has shot a bit more than 7 000 rounds.

- Lapua brass
- Lapua Scenar moly 105 grains bullet
- CCI BR2 primer
- Vihtavuori N 550 : 2.53 gramms,39 grains)
- 885 m/s,2904 fps)

 

[laffouine]

Hi all, hi alain
For me, in a Savage 12fv 243win with just a B&C stock
lapua brass
berger 95 vld moly
37grs of vihta N150
RWS 5341 primer
6 shoots at 200 meters
No speed sorry, maybe in a few day

 

[Clark]

It took 5 weeks of evenings, but I cut threads, chambers, glass bedded, pillar bedded, drilled and tapped, and even cut a 2 position safety for turning a couple 1903 Turkish Mausers into sporter .243s, with spare parts lying around my house.

I went to the range and tested 100 gr jammed into the lands with 45 gr H4350.
This opened the new Winchester .243 brass extractor groove by .001" and made the next primer easy to install, but did not fall out. After 5 firings, the primer pocket was not getting any bigger, still shootable.

I reduced to 100 gr jammed into the lands 43 gr H4350 and got 2975 fps with a 24" barrel.
There was no degradation in primer insertion force when re using the same piece of brass 6 times.

I would like to say that I got great groups, but these were Addams and Bennett barrels that cost $37 in 2002 for the stainless and $50 for the fat one later. They shot ~2 moa typically, but the fat one can shoot 65 gr Vmax at 3500 fps and gets 1 moa on 5 shot groups.

Anyway, it kept me away from watching TV for 5 weeks.

 

[ASM1]

24" Mike rock 1-8 twist 243 AI
Lapua Fire formed
107MK
210 fed
49.1gr RL22

3200 FPS

 

[mildot]

1-10" 22" sako .243 AI

Fire forming Load

43gr IMR4350
87gr V Max
Fed 210M
2.655"
Vel 2900fps


Fire Formed Brass

44.5gr IMR4350
87gr V-Max
Fed 210M
2.655" COL
velocity tba

 

[johnmyers]

Mauser action 26' Shilen bbl 1:10 twist. I shoot 95gr Sierra MK's with 40.5gr H4350 .005 off rifling, Fed 210m primers, Rem brass at 3040fps. This groups consistently 1 inch at 300 yds. This was used to kill a prarie dog at 1175 yds this October.

 

[bkmilw]

Hey I have a stock Tikka t3 lite .243 that I use for coyotes my go to load is 48. gr of h4831sc behind a 90gr nosler it shoots freakin lights out to 300 yds. I havnt crono'd it but I dont care cuz how well it shoots. Oh yeah its a 10 twist.

 

[500YardHog]

.243 winchester. 2.670 COL, 75grn V Max, 46 grns H 4350, 3480 fps and 1/4 MOA . Ground hogs hate it.

 

[AckleymanII]

243 Winchester

Factory Rem SS barrel
Rem or Win Brass
47.0g of H or IMR 4350
Winchester Primer ONLY!!
70g Nosler Ballistic Tip
Bullet seated to just kiss the lands
shoots 3 shot groups touching

Factory Rem Blued Sporter
39.0g of IMR 4064
70g Nosler Ballistic tip
Fed 210 Primer
bullet seated to kiss the lands

Factory Rem Stainless sporter
41.0g of IMR 4064
80g Sierra BT Blitz
Fed 210
Velocity is 3475 fps
3/4' groups at 300 yards
I have shot this load is 4 rifles

Factory Rem Stainless Sporter
42.3g of IMR 4350
Winchester Primer ONly
100g Hornady BTSP; great on hogs and large deer, fur friendly on yotes
Bullet seated to kiss the lands
Unreal accurate in Many of my 243's

Factory Rem Stainless sporter
43.0g of IMR 4350
95g Nosler Ballistic Tip and 95g Nosler partition
Winchester primer only
Bullet seated to kiss the lands
Clover leaf groups

Factory Rem Stainless sporter
44.2g of IMR 4350
95g Nosler Combined Technology bullet
Winchester primer
Bullet seated to kiss the lands
Clover leaf groups
It takes a little more powder to get the pressure up on this coated bullet

Rem Varmint
44.0-44.5g of Win 760 or AA2700
70g Nosler Ballistic tip or 75g
Fed 210 primer
Bullet seated to kiss the lands
Groups in the 3's with 3 shot groups

243 Win- Rem 700 Stainless sporter
85g Barnes Tripple shock seated .050 off lands
Rem Brass- Winchester large rifle primers
45.5g of R#19
5/8' group

85g Barnes Tripple shock-seated .050 off the lands
Rem brass-Win primer
39.5-40.2 of IMR 4064, very accurate


243 Ackley Improved-1-12 twist Hart barrel=28' long
fire forming load in Rem 7/08 neck turned brass
47.0-47.5g of AA2700 or Win 760
CCI-250 primer
70g TNT or 70g Nosler Ballistic tip
3750 fps, groups in the high 3's

Formed load in 243 AI
48.0-48.5g of AA2700 or Win 760
CCI-250
70g NOsler Ballistic tip
3850 fps, groups in the low to mid 2's

Formed load in 243 AI=12 twist, 28' hart
Rem 7/08 brass, neck turned
49.5g of Win 760
Win Mag primer
70g Ballistic Tip
4030 fps
shoots a very tiny hole

 

[1000yardstare]

stock Savage .243 12FV; Win brass and primers; all loads shoot sub-moa 5 shot groups; used in F Class competition; 87s and 95s for 300, 500, 600 yds; 105s and 107s for 900, 1000; all loads chronod 5 shots average with a PACT Pro XP at 10 feet. These loads were safe in my rifle. I have no control over the chambering specs in another rifle and therefore accept no responsibility for the use of these loads in another rifle.

Hornady 87 VMax, 2.760 oal
43.5 H414, 3201 fps
46.0 IMR4831, 3267
47.0 H4831, 3213

Nosler 95 BT, 2.755 oal
41.0 760, 3120 fps
46.0 H4831, 3190
47.0 7828, 3188
49.0 H1000, 3146

Hornady 105 AMax, 2.765 oal
45.0 H1000, 2873 fps
46.5 RX25, 3077
48.0 Retumbo, 2987

Sierra 107 MatchKing, 2.825 oal
45.0 H1000, 2858 fps
46.5 RX25, 3069
48.0 Retumbo, 2960

 

[44magSr]

Factory Remington 700 VLS, .243 Winchester, 26 inch barrel, 1 in 9 twist.

45 grains of R-22 in weighed and sorted Winchester brass,
CCI BR-2 primers, 95 grain Berger VLD's. Bullets are all measured on comparator, sorted and seated .003 into the lands. COL varies if measured from tip of the bullets to the base of tha case. Measure and sort your bullets with a comparator to determine the base to ogive dementions.They will all vary by a few thousandths this is why its imperative to establish a COL to the lands with your seating deapth tool first so they all engage the lands exactly the same every time. Check the COL by using a seating deapth tool to establish how far out to seat the bullet just to the lands of the barrel. Know this for each lot of bullets you measured and sorted then I added .003 push into the lands which seats every bullet exactly the same as the last no matter what the bullets base to ogive dementions are.

This load gets me down in the
3 inch range at 900 yards. And
less than 1/4 inch groups at 100
yards.

 

[cliffy]

A wealth of information is a real mouthful: As a proponent of .243 Winchester PROWESS, I offer ALL I've discovered regarding .243 Winchester P-R-O-W-E-S-S to the extreme. From dead-on accuracy to extreme power ratios down-range, I hold back no found specifics. I shoot more often than most people of, with more rounds fired than most people ever dream of concerning .243 Winchester fare. I'm retired from a work-a-day world, so the few bucks I have equate into ROUNDS fired. cliffy

 

[Ackman]

A wealth of information is a real mouthful: As a proponent of .243 Winchester PROWESS, I offer ALL I've discovered regarding .243 Winchester P-R-O-W-E-S-S to the extreme. From dead-on accuracy to extreme power ratios down-range, I hold back no found specifics. I shoot more often than most people of, with more rounds fired than most people ever dream of concerning .243 Winchester fare. I'm retired from a work-a-day world, so the few bucks I have equate into ROUNDS fired. cliffy

Ain't you the one though. But this thread was asking for loads, not self-congratulatory bs.