Ruger M77 stuck bolt

Had no problem with this rifle until recently. It's chambered in 30-06 Spg. I loaded 10 rounds 5 different loads for a 165 gr JSP in once fired, completely processed brass. Different HS mostly RP and winchester. The loads were slightly more than starting loads according to Lee and Ammoguide guidance. I crimped them in a bit. COL was 3.25" some space before the rifling. on three of the five loads the bolt stuck completely. I cound rotate up but it would not pull back. I had to put a cleaning rod down the barrel and tap the bolt back with a hammer. I had not completely cleaned the gun before firing. I took out the bolt and cleaned the wee wee out of everything. I put the brass that had stuck back in the chamber to see if it was ok and , when I closed the bolt it did it again, stuck tight. I tapped it free, put an unfired full sized brass case in and it cycled out, ejecting fine. When I would tap the stuck brass out it would also eject properly once the rod was pulled out. What gives? is it the brass or the gun? Did I overcrimp and cause the neck or case to expand so much it jammed? I talked to a gunsmith and he said "sticky bolt" it's a gun problem. But unfired brass cycled just fine. Ain't shooting it again 'till I resolve the prob.
Any help would be greatly appreciated

thanx all. Consensus: the loads. I crimped too tight (hey I'm just a newbie at reloading only been doing it for 8 mo.s) The loads that stuck were Reloader 7 - 39.2 gr, Benchmark - 49.0 gr, H4895 - 44.5 gr. These two loads did not stick: Blc2 - 47.0 gr and Varget - 48.0 gr. I used a scale to weigh these loads. I have a box of remington corelock 150 gr factory's I'll try this weekend. Wow they want a buck around even in Wally World. I'll let ya know what happens.

Thanks guys
I used Lee's Modern Reloading but upon checking the hogdon site I was surprised, hmm. I'm sure glad the gun didn't explode!!! I'll triple check the loads before trying again

Hold on there Nellie!

Woah there!
I rechecked my log. It was 46.0 gr of Benchmark not 49.0. The Hodgdon database shows start 46.5 to max 49.5 for 150 gr. COL 3.25". I was shooting a 165 gr Prvi JSP, the start is 45.0 to max 47.7 COL 3.3. My COL was 3.25" (at the Cannelure) so I was about at the mid point. Sorry about the confusion. I may have been picking up pieces of skull at 49.0 gr.

Thinking of that Hendix song "If six was a nine"

I used Lee's Modern Reloading 2nd ed. Richard Lee lists Reoader 7 last in the list for the 165 gr jacketed start 38.5 to max 40.5. But, yeah, it is LAST and he lists the better loads first. His first load is H4350 which I haven't seen any of anywhere in months.

HODGDON:

150 GR. NOS BT Hodgdon Benchmark .308" 3.250" 46.5 2792fps 44,600 CUP 49.5 2944 fps 49,300 CUP

165 GR. SIE SPBT Hodgdon Benchmark .308" 3.300" 45.0 2686fps 45,600 CUP 47.7 2795fps 49,300 CUP

The loads in my previous post are quoted from the Hodgdon website to point out where my loads stood in relation to available data. I had not tried these particular loads in this rifle. I had used starting loads of 150gr bullets in that rifle before with no problem These loads were the first 165 gr loads and the first loads over starting loads I had tried in the Ruger.

My 5 loads for the 165 gr bullet
that stuck were
Reloader 7 - 39.2 gr
Benchmark - 46.0 gr
H4895 - 44.5 gr.
These two loads did not stick:
Blc2 - 47.0 gr
Varget - 48.0 gr.
The bolt lifted ok it just would not pull back and extract. My COL in all 5 loads was 3.25"
The bullet was approx .15" from the lands
I have not yet shot factory rounds from it yet, I have some Rem 150gr PSP to try in it, I just have been unable to get to it yet. Lousy weather here this weekend. I will get to it around Thanksgiving I am anxious to find out the result of factory loads in the Ruger myself.

it's not the rifle

Today I shot 4 rds of Remington 150 gr PSP factory ammo thru the Ruger and it fuctioned flawlessly. That rifle is a tack driver. Each case extracted fine without a hitch. It had to be those particular loads that caused the sticking bolt.