• This Forum is for adults 18 years of age or over. By continuing to use this Forum you are confirming that you are 18 or older. No content shall be viewed by any person under 18 in California.

Long range load development at 100 yards.

Edwin, looks like 44.0 and 44.5 both hit same place vertically. Even the shots out of order hit the same POI. I would load between the two. Load 44.2 and adjust seating depth. I'm probably going to ignore your ES numbers because they don't seem right.
 
stubbicatt said:
E. C. I have no opinion on what you offer here, but I am grateful that a competitor of your "caliber" has shared with the rest of us something which you have found valuable, and therefore worthy of serious consideration.

I'm glad I can help.
 
Sir,

I'm trying to understand your way of choosing the best charge.

If all 3 rounds are somewhere along the 3 to 9 axis, this is not your best option.

If all 3 rounds are along the 6 to 12 axis, this group shows promise. Even with a bit left to right as long as all 3 are 6 to 12, you're moving forward.

Thank You, mj52
 
mj52 said:
Sir,

I'm trying to understand your way of choosing the best charge.

If all 3 rounds are somewhere along the 3 to 9 axis, this is not your best option.

If all 3 rounds are along the 6 to 12 axis, this group shows promise. Even with a bit left to right as long as all 3 are 6 to 12, you're moving forward.

Thank You, mj52

Read the first page of this thread, it will show you what I look at.
 
Erik Cortina said:
Edwin, looks like 44.0 and 44.5 both hit same place vertically. Even the shots out of order hit the same POI. I would load between the two. Load 44.2 and adjust seating depth. I'm probably going to ignore your ES numbers because they don't seem right.


Hi Erik, thank you for the review. Will do next step and test it over the weekend.
 
Sir,

Sierra 77 Gr @100yards.

I offer my opinion only as a way of explaining my attempt at reading these targets

22.5 has a good vertical but needs seating depth massaging.
23.0 looks pretty good as it sits
23.5 has more punch and may be the best especially since I'll be going out to 600 with this round.

Thank You, mj52
 

Attachments

  • IMG_6935_2.jpg
    IMG_6935_2.jpg
    74.9 KB · Views: 180
Please give me your opinion(s) of this one.

.308 168 gr SMK, VV N150 powder, 100 yards.

I'm thinking that the proper point is going to be 44.7 - 45.1.

 
Comrade Terry said:
Please give me your opinion(s) of this one.

.308 168 gr SMK, VV N150 powder, 100 yards.

I'm thinking that the proper point is going to be 44.7 - 45.1.
[br]
I think N140 would be a better choice at that bullet weight. You include no chrono data and I suspect that your top load is only ~50 ksi. It is unlikely that you can get much more N150 into the case.
 
Steve Blair said:
Comrade Terry said:
Please give me your opinion(s) of this one.

.308 168 gr SMK, VV N150 powder, 100 yards.

I'm thinking that the proper point is going to be 44.7 - 45.1.
[br]
I think N140 would be a better choice at that bullet weight. You include no chrono data and I suspect that your top load is only ~50 ksi. It is unlikely that you can get much more N150 into the case.

Thanks for the response, Steve.

Yes, I'd dearly love to have a better selection of powder. Unfortunately, N150 is all that I can get my hands on right now. Yes, the top load fills that little case right up! There's a little room left, but not much. I did seat the bullet at jam -0.020 so that gave me some room. No chrono available.
 
In that case: I would run 3-shot groups from 44.5-45.3 in .1 grain increments to define the node width and location. Once you know the center, begin seating depth testing.
 
Steve Blair said:
In that case: I would run 3-shot groups from 44.5-45.3 in .1 grain increments to define the node width and location. Once you know the center, begin seating depth testing.

Thank you, Steve. That's exactly what I'll do.
 
Comrade Terry said:
Steve Blair said:
In that case: I would run 3-shot groups from 44.5-45.3 in .1 grain increments to define the node width and location. Once you know the center, begin seating depth testing.

Thank you, Steve. That's exactly what I'll do.

Who the hell is this Steve guy and why are you listening to him? ;D

Actually, Steve is right. I usually just pick a middle load and do seating depth testing and then do the .1 increments, but backwards works just as well.
 
mj52 said:
Sir,

Sierra 77 Gr @100yards.

I offer my opinion only as a way of explaining my attempt at reading these targets

22.5 has a good vertical but needs seating depth massaging.
23.0 looks pretty good as it sits
23.5 has more punch and may be the best especially since I'll be going out to 600 with this round.

Thank You, mj52

22.5 looks like would be the one, but I don't understand why it's such a big group when the groups on each side are descent and align vertically. I would run test again to see if 22.5 groups better.
 
Terry if you pulled that shot on 44.3, then 44.7 looks like a good middle charge between 44.3 and 45.1. I would verify like Steve and Erik said. I bet you will be close to 44.7
 
savageshooter86 said:
Terry if you pulled that shot on 44.3, then 44.7 looks like a good middle charge between 44.3 and 45.1. I would verify like Steve and Erik said. I bet you will be close to 44.7

Thank you, Andrew. I don't think I pulled that shot, but it's always a possibility. I fired them round-robin, and that's where the first 44.3 grain round landed.

I'll play with them again next Thursday.
 
Comrade Terry said:
savageshooter86 said:
Terry if you pulled that shot on 44.3, then 44.7 looks like a good middle charge between 44.3 and 45.1. I would verify like Steve and Erik said. I bet you will be close to 44.7

Thank you, Andrew. I don't think I pulled that shot, but it's always a possibility. I fired them round-robin, and that's where the first 44.3 grain round landed.

I'll play with them again next Thursday.

Don't fire round robin. Moving back and forth sometimes affects POI because of changes in setup.
 
Erik Cortina said:
Comrade Terry said:
savageshooter86 said:
Terry if you pulled that shot on 44.3, then 44.7 looks like a good middle charge between 44.3 and 45.1. I would verify like Steve and Erik said. I bet you will be close to 44.7

Thank you, Andrew. I don't think I pulled that shot, but it's always a possibility. I fired them round-robin, and that's where the first 44.3 grain round landed.

I'll play with them again next Thursday.

Don't fire round robin. Moving back and forth sometimes affects POI because of changes in setup.

I'm using a bipod, and every shot is a new set up. Of course, I may be doing it wrong.

With every shot, the rifle hops to the side a little as well as moving to the rear. I have to wiggle things around to get set up for the next shot.

Some day, my rest will come....
 

Upgrades & Donations

This Forum's expenses are primarily paid by member contributions. You can upgrade your Forum membership in seconds. Gold and Silver members get unlimited FREE classifieds for one year. Gold members can upload custom avatars.


Click Upgrade Membership Button ABOVE to get Gold or Silver Status.

You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.


To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.

Forum statistics

Threads
165,788
Messages
2,203,383
Members
79,110
Latest member
miles813
Back
Top