Yup, rl33 is a bit odd at times in a 300rum. With the 225 Hdy. hpbt I'm getting 3,000 fps with 95 gr rl33- rem brass/215 primer. I don't think I could go to 105 without sticking the bolt. Stock rem 700 lr or stock rem 700 bdl lh rifles.
Looking at Midway the other day, and they have rem 300rum brass on order. I did put in a notification even though I still have some spare new brass. I'd like a bit more with 2 rifles in play.
No kidding RL33 can be strange. I tried 106 gr RL33 with a 250 Berger, just shy of 3200 fps and holy **** did it kick, no pressure, no heavy bolt lift, but too much. I went with that powder charge because Alliant showed that charge with a 250 gr matchking on their reloading page, but this was 200 fps faster than their load. They also show 99.3 gr with a 300 gr Match king and I use 99.0 with a 300 gr Berger and I am at least 125 fps faster than their test gun.
I load my dads 300RUM with Retumbo and it doesn't seem to be too picky everything I've tried shoots great behind it
Retumbo and 300 RUM were made for each other.
Why would you have to "cut the top"?
The biggest wyatts box extends the length of the bullet combo so long it requires a modification to the bolt stop ,the bottom of the receiver and the top of the receiver for proper extraction is what was on there information. I went one box below the max length so I only modified the bolt stop and opened up the bottom of the receiver.
Gotcha. I did the same mod as you then.
