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150 gr. ETip .308 Win powder choice?

 
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Old 06-09-2012, 12:51 PM
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150 gr. ETip .308 Win powder choice?

I've been using the ETips for a few years now with a 45.5 gr. charge of Varget. I started noticing some pressure signs and decided I would try some other powders. I've always shot Varget in the .308 seems like over and over again that is all that is suggested. I have not had the stellar accuracy others have claimed with the ETips and can not get anywhere near the book velocities. I'm shooting a Remington 700 SPS with a 24" barrel using Win brass and CCI 200 primers. My 45.5 gr Varget load was getting around 2730 fps. Hornady's reloading data shows 2670-2914fps with 42.3-46.5gr of Varget. I tried a lower charge of 44.5 today and averaged 2642 fps. I wish it was higher but I can live with that, shot right at 1 MOA at 200 yards today.

In search of better accuracy and maybe higher velocities without pressure signs I tried BLC-2 and H4895. Others have suggested that ball powder and the ETips do not play nice. Here are some photos of the results. The lower charges of BLC-2 show potential for accuracy but only got in the 2550 fps range. Okay for targets but I'd really like to be in the 2750-2850 range if possible. The H4895 gave amazingly low SD but sprayed the bullets all over the place. At the upper ends of the H4895 loads it started flinging bullets 5" high and right. With those groups and flatter primers I only shot one of the highest H4895 near max loads.

I only shot 2 round of each charge mainly to see potential velocity and pressure limits. I may take the mid load H4895 and the lowest BLC-2 loads and play with them a bit. Looks like my gun just can't get past the 2700 fps. mark with the ETips. Might just stick with the Varget loads. Tried getting photos of the primers and what looks flat in hand does not look nearly as flat in the photos. I'll pop them later and am sure I'll find a ridge around the edge of those top loads.

Anyone have similar results with the ETips and pressure signs/low velocity. I know I can't safely match cup and core velocities but trying to find the max velocity and accuracy I can live with. Going to start playing with the 150 ETips in 7mm Rem Mag soon too, hope I can get 300-400 more fps. than the .308 is. Also thought it was odd how the H4895 loads started marching high and to the right as the charge increased.

200 yard groups (I've started using masonite painted white, makes the holes visible and no paper to blow off)



Chrono results



Primers

H4895

H4895 starting

H4895 max


BLC-2

BLC-2 starting

BLC-2 MAx
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  #2  
Old 06-09-2012, 12:54 PM
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Re: 150 gr. ETip .308 Win powder choice?

My go-to powder for 308 is IMR4064. If you can not find a load with that powder and bullet wt I'll be shocked.
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Old 06-09-2012, 01:07 PM
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Re: 150 gr. ETip .308 Win powder choice?

Is there any reason that you are stuck on the e-tips? I have always gotten very good accuracy and velocity out of any rifle that I shot Barnes TSX or TTSX bullets. I have not loaded Barnes TSX's in my 308 but I have loaded and shot the 168 TTSX out of a number of 30-06s and 300WSMs. I have been able to get very good results.

I have used N550 in my 308 with 168 and 175 match bullets. It works well in a 308.
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Old 06-09-2012, 01:14 PM
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Re: 150 gr. ETip .308 Win powder choice?

Never tried the Barnes but maybe I will. Always been a fan of Nosler bullets but the target never lies right. At this point it's sort of like a challenge too but maybe my gun just doesn't like them. The performance on deer has been great but wish I could increase the range and accuracy a bit. Gun loves Partitions but being in California and wandering in and out of lead free zones I want to try and stick with lead free bullets for everything.

My old .270 was definitely easier. 130 grain Ballistic Tips and H4831..... DONE!! LOL!
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Old 06-09-2012, 03:11 PM
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Re: 150 gr. ETip .308 Win powder choice?

The Barnes TSX/TTSX have done so well in my rifles I have not tried the Hornady or Etips. Barnes had such a mixed rap for a long time with their original X and then their blue bullet, the XLC I believe, that I wanted to give them a chance when the TSX came out. It did the trick for me and I have nothing but good things to say about them.
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Old 06-09-2012, 05:18 PM
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Re: 150 gr. ETip .308 Win powder choice?

I agree with Derek M on the powder. IMR 4064 works great with my 308. 150gr. SST's and Accubonds are well under MOA at 100yds. I haven't had the luck with the TTSX's yet, but I hope to find the correct OAL soon.
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Old 06-11-2012, 10:28 AM
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Re: 150 gr. ETip .308 Win powder choice?

Davkrat:

What kind of condition is your weapon? Now, I am no expert, but I have gotten flatter primers from Winchester White Box factory loads. Please note from your exellent pictures that the primers are not extruding into the bevel of the primer pocket. Their edges are still rounded. There are no bolt marks on the case heads. The cupping around your firing pin strikes is unusual with a Remington. Could it be possible that you have a weak firing pin spring?

Just thinking out loud. Varget is good stuff for the .308.
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