.270 Win and 150 gr. Partitions

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Seating your bullet deeper reduces pressure. Seating closer to the lands increases pressure. Small changes in pressure can sometimes bring the harmonics into perfect tune. Changing the powder charge by only .1 or .2 does the same thing. I,ve been surprised at how small seating depth or powder charge changes can help. Once you get 2 in and one out,time to make small changes. If small changes don,t work,change to a different powder. Thats my two cents worth.

 

[Silentstalker]

Thanks guys. Hopefully we get some good range time Monday!

 

[Silentstalker]

Heading to the range thursday and I thought of two more questions for you guys. When sighting the target are you typically aiming dead center on the bull or a 6 oclock hold? Is one better over the other?

Also, all of my shooting has been off a lead sled. I have never really shot off bags etc. for load developement is the lead sled ok or should I use my bipod or sandbags with a rear soft bag?

 

[Oldtrader3]

Lead sled will not usually give you a good emough zero to be usable for hunting. I use a front mechanical rest which is adjustable in three axis, plus a small rear bag. I also use my left hand to push the rifle butt into my shoulder and stabilize the rifle butt in the bag so that the rear stock does not move while pulling the trigger. This position will give you a reasonable rest and sight-in point. Rifle still should still be checked out and shot at field position which will be used for final zero when shooting game.

 

[DrMike]

Charlie have given excellent recommendations concerning sighting in from the bench. As to hold of the target, it is inconsequential so long as you know where you were aiming.

 

[Silentstalker]

Thanks guys.

 

[SJB358]

Charlie have given excellent recommendations concerning sighting in from the bench. As to hold of the target, it is inconsequential so long as you know where you were aiming.

I agree, I use mostly low powered scopes, so I use a larger bull and the six o'clock hold.

 

[Silentstalker]

So i made it too the range today. Calm day about 60 degrees.

Shot 55.5, 56, and 56.5 grains with multiple coals for each. Cooled down 2 minutes between shots and dry fired in between for practice. My dry fires were staying on target and I felt like my shots were all true as well. Most powder charges ranged from just over and inch to 2.5 inches. The one bright spot was the 56.5 gr charge. Especially at 3.325" coal. I shot this .785 group and another from the 56 gr. that measured just shy of an inch. This COAL seems to be the most consistent and tightest shooting with this bullet for me. The shorter I went the bigger the groups. I was still getting a bunch of 2 in 1 outs through out all coals but as I kept track they were not always the 3rd shot. This particular 3 shot group the 1st two touching and the 3rd was to the left.

I believe this load is ready for my sons cow elk hunt upcoming and once I get my new Timney trigger installed I will continue to work on my load. Thank you for all your help!

 

[DrMike]

That should work very well for a cow elk. Yes, I do believe you are ready for this hunt. We all are wishing your son every success. Of course, you'll share in his success.

 

[Silentstalker]

For sure, i hope to document bullet recovery/performance and wound channel if possible. Thanks again! Good luck to you all!