Thread: AR2217 and 162gn AMax 7mmRM recipe??

Originally Posted by Tikka7mm08

Yep...I alternate with 223 and 7mm08 when using the 7mmRM. With the DPT suppressor it does heat up a bit. I used a sunshade on the mk4 8.5-25 and that helped...as did the extra magnification.

I'll take a few shots tonight showing a recent POI walking for some of the boys on here to take a gander at. i got a bit time pressed, and had to shoot a couple of groups and different projectiles quite quickly before range closed. Quite uniform and 10-11 O'clock irrespective of load. Guess you're significantly better than this due to you having a nice Sendero barrel as a heat sink rater than my thin little frypan. I'm definitely going to at least a #5 Contour barrel when i re-barrel this action.

Can't beat having a 223 paired for trigger time with a 7RM. Did you get much mirage in your scope from the can? I get POI move either on or after the 3rd shot depending how much I've let it cool from the previous group firing (baseline temp), and significant Mirage on the 4th. Without a sunshade, but considering it has big can on the end i wouldn't have thought that it would make a difference. I'm Interested now? I know the Neoprene cover is good for the first few shots in minimising mirage then all it does is keep the barrel warm after that.

i Did used to take the supressor off between shots and blow down both the barrel and supressor, but seems to have F/A effect (but made me feel better that i was doing something to cool things down) - but did seem to change the POI before i got the can re-reamed. Now sweet as irrespective... We joked a few weeks ago about getting a can of compressed gas to blow down the barrel - Anybody do this? to chill back down.