Help w/ Load Development

[archp625]

I am working up a load for a 300 WSM I had built. Before the data below, I have shot the rifle 100 times to once fire my brass/break the barrel in. After this load development I have 130 down the tube. As you can see I feel like the rifle is still speeding up. Not much, but it is. Should I keep shooting a pet load and come back in another 30-45 shots or what load would you start seating depth testing with? Data shows 61.3-61.6.

Powder	59.8	60.1	60.4	60.7	61.0	61.3	61.6	61.9	62.2	62.5
1	2679	2714	2740	2745	2763	2768	2778	2787	2807	2820
2	2722	2721	2748	2756	2762	2776	2781	2816	2820	2836
3	2718	2727	2761	2763	2777	2799	2791	2809	2826	2834
Avg	2706	2721	2750	2755	2767	2781	2783	2804	2818	2830
Speed Increase		14	29	5	13	14	2	21	14	12
SD	24	7	11	9	8	16	7	15	10	9

 

[sndmn11]

Where was pressure?

 

[archp625]

None. I feel like I could go higher but this is with a 20" barrel and 200.20X Bergers. When I had this rifle built I told myself I was happy with anything over 2700 fps.

 

[archp625]

None. I feel like I could go higher but this is with a 20" barrel and 200.20X Bergers. When I had this rifle built I told myself I was happy with anything over 2700 fps.

ADG brass
H4350
CCI 250 primers
200.20X Berger Hybrids

 

[sndmn11]

I'd keep loading until I found pressure, and possibly a higher node. Otherwise shoot at 61.5gr until you think your barrel is settled.

I also think there are errors in your data, particularly the extreme spread for each.

 

[archp625]

I'd keep loading until I found pressure, and possibly a higher node. Otherwise shoot at 61.5gr until you think your barrel is settled.

I also think there are errors in your data, particularly the extreme spread for each.

You are correct. The ES isn’t within the group. It’s the increase is sped to the next grouping. I always look for the two that are closest in speed or have the less jump in speex

 

[Justin Crossley]

I would keep going until I found pressure. You should be able to find a node in the 2900-2950 fps range I think.

My 300 WSM is shooting the 215 Bergers at 2950 fps with a 24" barrel and Reloder 26 powder.

 

[archp625]

I would keep going until I found pressure. You should be able to find a node in the 2900-2950 fps range I think.

My 300 WSM is shooting the 215 Bergers at 2950 fps with a 24" barrel and Reloder 26 powder.

You think I will be able to find a node that high with a 20" barrel?

 

[sndmn11]

You think I will be able to find a node that high with a 20" barrel?

2900 should be a simple grab.

 

[Justin Crossley]

You think I will be able to find a node that high with a 20" barrel?

Not sure. I didn't know you were using a 20" barrel.