Seekins Havoc PH3 7PRC load issues

[Acton_26]

I have a Seekins 7PRC with a 26” barrel 1:8 twist and an Area 419 sidewinder brake. I am shooting copper because I live in Commiefornia. I have tried 143gr, 160gr, and 168gr McGuires Copper Rose. I have the following powder:

H4831SC
RetumbO
Varget
H4350
H1000
N560
IMR 8208 XBR

I have ADG and Peterson Brass. I can’t seem to get the correct combination for this rifle.

Any and all help would be greatly appreciated.

Thanks,
Jeremy

 

[Grunt-N-Gobble]

I have the same rifle in a 22in barrel and wish I could help you. I have Barnes bullets in 150 TTSX, 160LRX and 168 LRX but haven't done any load development yet.

If you use the search function, there are some threads discussing copper bullet loads. I have a friend who really likes the Hammer bullets and considers them the "easy button" when he wants to shoot copper. I spoke to the owner when I was thinking of giving them a try and he recommended the 145 tipped. You may want to give them a try.

 

[Acton_26]

I have the same rifle in a 22in barrel and wish I could help you. I have Barnes bullets in 150 TTSX, 160LRX and 168 LRX but haven't done any load development yet.

If you use the search function, there are some threads discussing copper bullet loads. I have a friend who really likes the Hammer bullets and considers them the "easy button" when he wants to shoot copper. I spoke to the owner when I was thinking of giving them a try and he recommended the 145 tipped. You may want to give them a try.

I have used Hammer Hunters in the past and found McGuires have a better BC than the Hammers. McGuires have performed excellent out of all of my other rifles so I am curious why this one which is in my opinion better built than a factory rifle is giving me trouble.

 

[wind gypsy]

Maybe you got a bum barrel or it just doesnt like mcguires. It happens.