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22-250 75 Grain A-Max

 
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  #1  
Old 12-24-2008, 09:44 PM
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22-250 75 Grain A-Max

Anybody shooting the 75 grain A-Max in their 22-250. I just received a new 22-250 I had built with a Krieger 1in8 twiist- heavy 28 inch barrel. I am getting ready to start loading for it, and I just wondered if anybody had any experience with the bullet. Data is a bit hard to find. I have been thinking about H-414, and H-4350?? Any other ideas?? Or loads with those 2 powders? Tom.
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Old 12-24-2008, 10:23 PM
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Re: 22-250 75 Grain A-Max

H414 is what my 8 twist 22-250 has liked for many years. Start around 33 grains and work up from there...36.5 grains and the 75 Amax is what I use but it may be too hot in some?
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Old 12-24-2008, 11:00 PM
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Re: 22-250 75 Grain A-Max

Quote:
Originally Posted by MachV View Post
H414 is what my 8 twist 22-250 has liked for many years. Start around 33 grains and work up from there...36.5 grains and the 75 Amax is what I use but it may be too hot in some?

Any idea what kind of velocity you are getting?? Barrel length?? Tom.
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Old 12-24-2008, 11:23 PM
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Re: 22-250 75 Grain A-Max

Ya the barrel is a 27" Shilen and 36.5 grains of H414 with a winchester magnum primer gets me 3425 in the summer sun. I'd use this outfit a LOT more but the barrel fouls fast and NEEDS cleaned every 25 rounds. Was hopeing it would get better with use but if anything its gotten worse?????


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Old 12-25-2008, 08:35 AM
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Re: 22-250 75 Grain A-Max

I was hoping to get 3200-3300 fps from my new rifle. If I could get 3400 I would be very happy. I have heard the H-414 can be temperature sensitive. Do you believe this to be so??

I will be using this rifle for long distance ground hog hunting. I consider long distance to be from 400-700 yards. I think I got it right with my rifle build and bullet choice. However only time will tell. Tom.

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Old 12-26-2008, 01:23 AM
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Re: 22-250 75 Grain A-Max

MachV, What kind of stock is that on your rifle. It looks very nice.
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Old 12-26-2008, 05:15 PM
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Re: 22-250 75 Grain A-Max

I had a local smith take off the worn out 243 sporter barrel and screw the Shilen 8 twist on to this old Ruger tang action 5 or 6 years ago. Somethin aint right cause I had to shim the bases a bunch to get it on paper with the 8-32 br NF. This pic is from 2003 or there abouts


I've got a beautiful walnut thumbhole stock around here I tryed to get the action into but finaly gave up and ordered a Boydes stock(the one you see in the pic on the other post) for it.It has yet to realy get finnished either as it is still unstained with just a coat or two of tungoil on it to help seal it a bit. Fitting and bedding stocks onto Ruger actions can be a real PITA!
Most will tell ya that 3300fps is doable and probibly the optimum velosity. This one for some reason only liked H414 when new and the faster I drove it the better it shot? The plan is to cleaner up real good and try a few different powders to se if it will go a few more rounds between cleaning.
With so many guns to chose from I only have 450 rounds through it and all with H414 and 75 grain Amaxes. I like the round but this setup has been a lot of work from the start and still not finished...I loose interest and it has sat a couple of years unused.
As for H414 being temp sensitive.......By benchrest standards it may be but for shootin dogs with the 22-250(75Amaxes) and 243(55Noslers) it has not proven to be a problem. I did however work up loads @ 75, try to keep the ammo out of the sun and dont let a round cook in a hot chamber. Good advise for anyone shooting in the high desert summer!
The 37.5 grain used in this target proved to be a little hot for summer use and the load was backed off to 36.5 with no signs of preasure. I did try moly on the 75 Amax to se if it would shoot a longer string between cleaning but gave up fast as the barrel did not like moly at all.
This target is representitive of how this thing shoots rounds 2-20. God only knows where the first fowling shot is going to go and it starts opening up fast after 25 rounds ;-(

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