105's and H4350

[Ksmirk]

Well afternoon fella's, I'm finally about out of my 107smk's and about to try some Berger bullets and bought some H4350 as it seems all the cool kids are using it. Called Berger to get some load data and they tell me start 35.5 and work up to 39.7, got to digging around and from what I'm reading Bergers info is a touch on the conservative side... guy loading 42.5 for the dtacs makes me think those loads given to me from Berger might be off a little. If you don't mind what powder charges are you fella's loading? I'm just after some info to see if I need to up the starting charge weights so I don't go thru a mess of bullets and powder with the ocw testing. Later,

Kirk

 

[Ksmirk]

Oh I'm a DA! this is for a 243 Win later,

Kirk

 

[dkhunt14]

Berger might be a little light but that load you have listed for the Dtac sounds hot. You really need to work up for your rifle. Throats and barrels can really vary. Matt

 

[Ksmirk]

Oh working up is a given! just curious about what Berger told me thinking that's a touch conservative as I know people loading the 260 at 42.0 with a 140 bullet. I dug thru the link above and didn't really see anything for the 105 and H4350 so thought I would ask. From other I have spoke with around 41.5-42.0 should start to become the max so I've decided to start at 38.5 and work up thinking this should be safe and give me a baseline. Later,

Kirk

 

[dkhunt14]

In a 243 Hodgdon gave starting at 35 and max at 37.5 with a 105 and H4350. They gave the same numbers with a 107. On your last post you are talking 260. Which load do you want? Matt

 

[Ksmirk]

I was stating people I know are shooting the loads in a 260, with a case the same size for the most part and heavier bullet so has me thinking the loads stated by Berger for the 243 are rather mild but seem to be hotter than what your Hodgdon manual states. I was looking for 243 data from people who are shooting this powder to gain a base line for load data to try and save a few bullets and powder.

 

[dkhunt14]

I was stating people I know are shooting the loads in a 260, with a case the same size for the most part and heavier bullet so has me thinking the loads stated by Berger for the 243 are rather mild but seem to be hotter than what your Hodgdon manual states. I was looking for 243 data from people who are shooting this powder to gain a base line for load data to try and save a few bullets and powder.

I take one case, load and shoot, 1/2 grain more load again and shoot, I keep using the same case and see how far I can go while watching for pressure signs. Usually a gun shoots best just down from top load. The thing with guns is one barrel can take more then another. The biggest thing is the throat length. The longer the throat the more powder can be shot. matt

 

[ballison]

Might find something to help here:

http://www.scout.com/military/snipers-hide/forums/5533-reloading-depot/13256727-243-win-loads

 

[Ksmirk]

Thank you sir! I've not been to that site in years and must say it's gotten better. Well it seems I need to adjust my test charges up a bit. Again thanks for the link at least it solidifies my thinking isn't too far off. Later,

Kirk

 

[dkhunt14]

Thank you sir! I've not been to that site in years and must say it's gotten better. Well it seems I need to adjust my test charges up a bit. Again thanks for the link at least it solidifies my thinking isn't too far off. Later,

Kirk

You still need to work up. Some of the loads I read on there are really on the upper side of hot. If someone has a rifle that is throated out for the long bullets, that can really change the capacity of the case. It moves the bullet out of the boiler room, which increases the capacity. Just because some one else uses it doesn't mean you can. As an example I shoot 34 grains of Varget in my Dasher with a 105. I run a .155 freebore and that moves the bullet out of the case. A lot of people would lock up a bolt using that much powder. Matt

 

[Ksmirk]

Well I always work up a load no matter the source so we're good there, just looking for the most used loads so I can get a range. Honestly the charges I have loaded I really doubt I get the the top BUT I will have enough charge to find where I'm getting to the top without making several trips to the range as I don't get many chances so need to get as much work done as possible. I'm trying to combine a ladder and ocw test all in one for a base then work on seating depths, starting these test .010 off the lands then I can work up or down when I find a node to tune. just looking for loads as the data for the powder seems too lawyer induced.

 

[Zero333]

42gr is the common max.

 

[Eric Leonard]

I am shooting a Stiller Tac 30 with a Krieger .236 8 twist and freebore long enough to seat the 105 VLDH at 2.860 and have .020 jump,,

WW brass
CCI200
41.5 H4350

brass been loaded 6 times and primer pockets still tight,,but as stated a shorter freebore and bullets seated deeper may be too hot a load

 

[Ksmirk]

I'm shooting a 7.5 Bartlein 25" and my COL's are a touch on the short side at 2.815" with .010" jump. I was trying to go simple and just use a SAMMI min reamer from Manson BUT if I can't get where I'm trying I know a guy with a lathe and a throating reamer Mine isn't all that special, a Savage mod 10 action and I went no nut this go just to try it and so far the 107 SMK's and RL22 have been putting a smile on my face but all the cool kids are shooting H4350 so thought there may be something to it! I am not out to get crazy velocity just a good accuracy and somewhere around the 3K FPS.

I've got loads from 43.0 (which I doubt I get too) down to 39.0 in .4 increments so from what I've been advised and read should be good to go. The first testing will have to be at 100 yards until I get my membership back up BUT will give me a good point when I get a chance to stretch the range out to really get things tuned up. Again fella's thanks for the pointers! Later,

Kirk

 

[Eric Leonard]

mine is 28" and is going 3200 over magnetospeed at 41.5

 

[Ksmirk]

Well got out and did some testing and while the groups were not bad I was not really happy with the velocity results or the fact that a 9 shot string the barrel was dang hot! I never got any pressure signs and was for sure I'd have seen something as I went up to 43.0 grains. Grouping was wonderful until I hit 41.8 then things started to open up? as for velocity's see below;

39.4 = 2714
39.8 = 2740
40.2 = 2760
40.6 = 2780
41.0 = 2808
41.4 = 2829
41.8 = 2863
42.2 = 2879
42.6 = 2882
43.0 = 2950

Just 3 shots each of the Berger 105 VLD's and haven't had the urge to do the math to figure out the SD yet but thinking I need to give another powder a try like H1000 or RL22 I'm thinking. The barrel is a 25" Bartlein 1-7.5 twist .237/.243. Anyone have any thoughts or suggestions?

 

[Eric Leonard]

mines a 4 groove .236 Krieger 28 inches long 8 twist,,my freebore is long enough to seat 105 VLDH at 2.860 and have a .020 jump also,,IDK but maybe I just have a faster bbl but could the .236 or the extra 3 inches and the .020 jump account for the extra speed,,I really dont know,,

I hit 3350 with RL 26 but after about 8-10 rounds with the bbl hot pressure spiked really bad ,,

the H4350 load really hammers for me but every bbl is different thats a fact,,

 

[Ksmirk]

Well I still have some of the RL22 and it was giving respectable velocity without a mess of heat so may spend a little time with it also have another guy around here that shoots the 4831SC with good results that we may get together and chat as he offered some powder to try. Looks like I'm going to need to take off a day of work and do some load development rather not shoot the dang barrel out working up loads though lol Later,

Kirk

 

[LitLBoy]

You might consider 7828SSC works great in 6XC and 6SLR
LitLBoy

 

[Raptor]

I shoot a 6SLR and I am shooting H1000 in mine. I also tried HV100 and it shot very well also. Both of these powders were nearly 80fps faster than my 43.5 H4831SC load with 107s.