Cold Shot
Hi there,
I couldn't help but ask some questions. I recently purchased a 300/221 TC carbine with suppressor but as I haven't had any experience with reloading since sent my gunsmith for some subsonic load development. He found the rifle to be grouping around MOA for 5 shot groups at 100m. He did however find huge elevation changes with as little as 30-40fps speed deviation. He made the comment that the biggest problem was a cold, clean barrel but in my case the first shot deviation is very close to the main group. He found by very carefully throwing powder charges consistantly the group sizes stayed small & centred.
I could be all wrong as I'm waiting to receive it back for hunting. Barrel harmonics & it seems small case capacitys do strange things. I'll have to post once I get it back & have a little time in the field with it.
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