H4350 or other powders for 75-80-90gr bullets in 22 cal?

[VaniB]

I'm looking for long range accuracy in the 3,300+ FPS range, and I believe I have a couple of good loads with RE22 and VV560 powder for my 75-80 grain 22 cal bullets that I'm currently handloading.

But, in particular I'm interested in trying some H4350 or IMR4350 powder (which I have on hand) before I head to the range. Are there any loads with these powders or any other powders that you are using in your 22/250, 22BR, 22Dasher, 22x47, 220 for 75 grain and heavier bullets that you can tell me about?

This is the first time I will be heading to the range with this rifle and I'm trying to take a few different loads with me. Thanks!

 

[chestsprings]

In the last month, I have shot 105 rounds of Hornady 75 gr. A-Max's out of my 22-250.

also, in the same time frame, 167 rounds of the 75 A-Maxs in my 223.

both are 1:9 twist, custom barrles for my Savage.

the best 22-250 loads I have worked up are H-36.5 grs. of H-4831. also, 37 gr. of H-4350.

Be aware, I started at 34.5 grs. for each powder, & worked up to the above loads. they are safe in my barrels, might not be in yours.

with the above loads, I found that seating .015 off the lands gave me the best groups at 100 yds. at least 12 , three shot groups shot less than 1/2 inch. crony at between 3110 & 3290.

for my 223, Varget 24.5gr, or H-4895, 24,5 grs. were the best group.

as I said above, work up to these loads, as they were safe in my barrels, might not be in yours[/

I chrony ten each of the 223 loads.

the 223 Varget loads crony between 2910, & 2945, the H-4895 chrony between 3036, & 3050

really a toss up as to which powder, Varget, or H-4895. both shoot better than I can hold.

also, seating .015 off the lands made a huge difference in accuracy for my rifle. .005 off the lands , I didn't get very good groups, in either the 223, or 22-250.

good shooting

Gene

 

[VaniB]

I'm making handloads for a 22x47Lapua which holds a hair more powder then a 22/250 case. My barrel is a 1-8.25 twist.

Your experience with the 37 grains of H4350 is more closely in line with the data I'm looking for. I found a single mention on another websight of an 80 grain bullet with 35 grains of H4350. So, your input is very much in line with this, and I will feel comfortable pulling the trigger for the first time on these kinds of numbers.

Yes, isn't it funny how some rifles shoot better with the bullet against the lands, and others need the bullet to jump across.

I very much appreciate all the info you provided here. Thanks.