elkaholic
Well-Known Member
Dang! Except I'm going to have to order some higher rings. My scope has near zero clearance with this Heavy varmint barrelSweet looking rig!!! I wish I had tomorrow off work and I'd come help you shoot that beast
300 PRC SHERMAN IMPROVED
- Thread starter elkaholic
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ramrod79
Well-Known Member
Well Rich that scope clearance seems to be an issue and mine isn't finished yet. Better send to me to shoot I have a smaller scope to fit better. Lol.
What colour are you going to cerakote barrel. I say a nice TI colour or even a burnt bronze would look pretty good.
What colour are you going to cerakote barrel. I say a nice TI colour or even a burnt bronze would look pretty good.
ramrod79
Well-Known Member
Just need a 338 version of that now!!!
elkaholic
Well-Known Member
Not sure on color?
elkaholic
Well-Known Member
Anyway, after finally getting over to my buddies alfalfa field and setting up, things went well. After bore sighting and firing the first shot to get zeroed, I went to work. I wanted to break the barrel in a little first so shot 5 rounds down it cleaning between shots. It didn't copper up much which is always nice!
I then started on the rounds I had loaded up to duplicate my best guess on a factory loading. I used the 225 ELDM loaded to 3.685" which I'm told is factory spec. That means around .095" jump in the improved chamber! The mv was at 2881' so I think I hit their velocity pretty close since I have a 28" barrel. The load was pretty mild and shot under 1/2 moa while fire forming in my chamber. Not bad for a barrel with 6 rounds through it
Next up was the same load only loaded to 3.760", which is around .020" off the lands. Things are looking better and better! These 5 shots were dead on in a nice tight group.
I still had 4 rounds left so I thought I would use them up at distance since my zero looked good. I backed off to 880 yards and stuck up my freezer paper target. Those 4 shots went into 3.5"! Dang! I think Eric Goss over at Axis works put together another shooter!
One of the concerns folks had was "how would the price be round perform in my chamber" and " could they use factory ammo in a pinch"? I'd say this pretty much answers that question! I can't wait to see how this baby shoots with formed brass and a little load developement. It may have to wait until after the shot show but I was glad to at least check out the forming process
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elkaholic
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Patience young man, patience
Weatherby Fan
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Some pretty fine shooting Rich, congrats and thanks for sharing
elkaholic
Well-Known Member
This round is going to be a winner!
Weatherby Fan
Well-Known Member
I'm pretty sure it's all hype by Hornady !
I can't wait for my barrel to arrive for my build
elkaholic
Well-Known Member
Its been a while since I was able to do anything with the 300. After the first volley to try out the fire forming of factory rounds in my chamber, it was off to the Shot Show and then back to being slammed when I returned home. Today I was going to try to start some load testing but the weather moved in so I decided to just run some loads over the magneto speed (in the rain) to see how the velocity stacked up with some loads I had shot in the old barrel. Looks like it was pretty much what I expected with my hunting load from my old barrel clocking about 15-20' slower in this barrel. This makes sense as this case has slightly more capacity and a tad more free bore.
I fired a couple rounds with H1000 to see how it compared to, what I think, is a factory load at 77 grains H1000 behind a 225 ELDM. It clocked at 2857' with pretty low pressure. Next came some of my N570 loads that I had previously shot. 83 grains behind a 225 ELDM clocked 3048' 84 grains at 3086' and 85 grains at 3125'. I think 83.5 grains is likely what I would use as max for the Hornady brass to last 3-4 firings. the primer pocket in the 85 grain load was looser than I would like and this was the second firing on the case. I stuck a 230 Berger ahead of the 84 grain load and it clocked 3090'. Again, a little too warm for brass to last but the bullet was jammed pretty hard which likely didn't help! I just loaded it according to the eldm 225's and the 230 otm obviously had a little less aggressive ogive. Below are the magspeed readings.
I fired a couple rounds with H1000 to see how it compared to, what I think, is a factory load at 77 grains H1000 behind a 225 ELDM. It clocked at 2857' with pretty low pressure. Next came some of my N570 loads that I had previously shot. 83 grains behind a 225 ELDM clocked 3048' 84 grains at 3086' and 85 grains at 3125'. I think 83.5 grains is likely what I would use as max for the Hornady brass to last 3-4 firings. the primer pocket in the 85 grain load was looser than I would like and this was the second firing on the case. I stuck a 230 Berger ahead of the 84 grain load and it clocked 3090'. Again, a little too warm for brass to last but the bullet was jammed pretty hard which likely didn't help! I just loaded it according to the eldm 225's and the 230 otm obviously had a little less aggressive ogive. Below are the magspeed readings.
