Loading Question.

[ol mike]

Does a small window of accuracy w/a powder/bullet combo concern you?
I misplaced some load data then found it after retesting the load.
In the spring i tested a 25-06 load in 3/10th gr increments and 53.9gr of imr 4350 w/a 100gr nos-bt shot [1/2"].Today it shot .606 and .568 in 2-3 mph wind.
That's great to me but my concern is 53.3 ,53.6 -- and 54.2 shot about 1 1/2".I'm worried that in cold or hot temps that the load might not be a good load.
So should a small window of accuracy like this concern me?Just don't want to load up 100 of them and end up w/a 1 1/2" groups in cold/hot weather.
Thanks Mike

[Mikecr]

1.5" is way out there, so I would continue testing.
What's your velocity & ES doing?
Have you tried seating depth and primer changes yet?

[rotorhead]

This would concern me. I always try to find a load with a large window. There are alot of powders out there that produce good windows. That being said I would do what mikecr suggested there might be a seating depth that will make a differance. I would be interested in what your velocitys are and what rifle you are using an your bullet weight? I'm thinking if you have enough barrel and space that AA4350 might be a better choice it is a little slower than IMR4350 and although I have tried it in the 25-06 I would think it would be a good powder. A buddy of mine uses the AA4350 in a swift and a 69 grain bullet at 3550fps and it has a very large window. anyway there my 2 cents worth

RH

[ol mike]

Mikecr ,
I don't have a chrono yet i'm moving west in 4 months so no room for more stuff.I haven't tried seating depth or primers because i thought i might be chasing my tail w/the small window of accuracy.

Rotorhead ,

The gun is a rem 700 bdl has about 350 rounds down the 24" barrel ,100gr nos. bt ,cci 200 primer ,imr 4350 powder ,ww brass ,15k off the lands.

I have 3 loads worked up that shoot 3/4" in this gun 75 v-max,85gr nos.bt ,110gr accubond.So i guess you could say i've got a 3/4" gun.
I've tried the 100gr.nos bt w/h-4831 ,imr-4831 and imr-4350 -imr 4350 does the best.The other powders don't have the small window of accuracy so i wondered if i should try to work w/them?

[rotorhead]

Mike , I would think the 4831-H would be a little slow but it might not be with the 100 grain bullet. I really like the 1/4 bores all of them I just think they are great. I haven't owned a 25-06 but I might one day. I noticed my typing was a little off this morning sorry. I am a big fan of AA4350 it has worked well for me in a multitude of cartridges it is a little slower than the IMR version but it may not make a lot of differance. Ya know the more I think about it the hodgen should work with the 24 barrel assuming you have enough room in the case to get all of its use. I will be real interested in what you come up with. My experiance is mainley with Hodgen 4831SC it should be the same but I wouldn't be completely sure saying that. I will assume your barrel is a 1:10 twist? you should continue working with it and get that larger window. If you are from a colder climate and you want to go south and hunt in short sleeves you just might find a pressure problem with that large window you can back off a little if needed in the warm weather. When I first started handloading I found a load that worked well and I though the fun was over , I could not have been more wrong I really like looking for that perfect load with a great big window haha. This is a subject that doesn't get touched on alot I glad you did. I guess we will keep loading and trying and learning new stuff Isn't this fun stuff You sound like a fella that has been at a little while so let me know what you come up with.
Anyway nice talking to you good luck

RH

[ol mike]

Rotorhead ,

I checked my loading data book more closely and i haven't even tried H-4831 w/a 100gr nos-bt.It [H-4831] was w/an 85gr nos-bt ,and it shot around .75" average but the varget is more consistant w/the 75 vmax and 85 nos-bt.
I loaded up 15 test rounds i'll shootem this weekend if the wind ain't howling.
I had chased a load in a 22-250 for several weeks ,the barrel was screwed into the receiver crooked and the round count was getting up there so i had it rebarreled.Talk about a boring gun ! one trip to the range for barrel break in then a 1/2" consistant load straight from the lee book---BORING [img]/ubbthreads/images/graemlins/smirk.gif[/img]!!
Got a 7mm wsm on the way so after a little tuning i can start dreaming of that perfect load again--gotta love it!
I'll dig this thread up and let you know the results of the h-4831 for some reason i think it's going to be 'the' powder.---Mike

[dryfarmer]

Don't stop there , who's barrel did you use as a replacment, how much dollars, who did it, which 22-250 were you using, I am thinking barrel replacement may be my coarse of action,