Reply With QuoteEnquireing minds look forward to Your results :-))
According to the recoil calculator in link below the 20 lbs 110 BA with a 300 gr bullet pushed to 2900 fps by 93 gr of powder would produce about 24.5 ft*lbs of recoil energy.
http://handloads.com/calc/recoil.asp
That puts it at about the same recoil as my 12 gauge slug gun. Now I can shoot that gun all day long at the bench. But my shoulder will be a little sour. Not quite enough to flinch though.
I have never tried to shot my slugger in prone position.
But it's supposed to punch a bit more that way.
So similar to my slug gun. Than add the shrouded brake, the piston recoil buffer tube, and a good thick recoil pad and I should be pretty much okay. (fingers crossed)
I don't think the .338 LM is the kind of gun I will shoot 100-200 rounds per range visit like I do with the slugger or the trap shotgun. So hopefully it won't be too bad.
Enquireing minds look forward to Your results :-))
I was worried, in the abstract, about recoil in the .338 Lapua Magnum. Then I compared it with the .378 Weatherby Magnum.
The Weatherby throws heavier bullets behind more powder.
I once tried to develop a 1moa load in the sporter version of that rifle. That bench rest experience tells me that the Lapua with a much heavier rifle and a good brake should be a comparatively pleasant experience.
BTW the whippy barrel, very long freebore and 1965 technology bullets made 3 moa more the norm with 2 moa something to celebrate.
I can also now say I am recoil averse with knowledge of what stout recoil is.
Were you shooting it on the bench with or without a brake? And what kind of muzzle velocity were you getting?Originally Posted by JASmith
The 338 Lapua will not get a 300 gr bullet going at 2,900 fps unless you have a 32" barrel. Even then that's pushing it.
Realistically, the 338 LM with a 26" barrel will spit out a 300 gr bullet between 2,700 and 2,750 fps MAX. Higher velocity than 2,750 fps means it's generating more than 60,000 psi and that's not recommended.
Run the recoil numbers again at 2,,700 fps and compare them to my 300winmag shooting 240gr at 2,750 (76gr of powder / 17 lb rifle). Even tho I got up to 2,850 fps with out pressure, but accuracy was best at 2,750, and I couldn't tell any difference in the recoil between 2,750 and 2,850 fps.
Running through your gun I got 17.3 ft*lbs at 8.1 fps.
Running my gun at 20 lbs, 93 gr of powder, 300 gr pill, and 2750 fps pill speed I got 22.7 ft*lbs at 8.5 fps.
So if that means anything without a brake my gun would recoil about 25% harder...if that means anything.
25% more recoil wouldn't bother me. I'd probably not even notice the difference.
The 300winmag I'm referring to kicks less than my brothers 14 lb 308win. that has a solid buttpad.
My guess is that your 338 LM at 20 lbs shooting the 300 grainers around 2,700 - 2,750 will feel no different than a 8 lb 308 win.
No brake, the lightest countour available at the time. Standard velocities for 230, 270' and 300 gr bullets. Chronographs were hard to get in the mid-60's.
Nah! Here are the numbers for the .308 versus my planned gun:
_____________________________recoil enery______recoil velocity
_______________________________ft*lbs___________fp s
.308 Win. 7.5 lbs (150gr at 2800fps)__15.8____________11.7
.308 Win. 7.5 lbs (165gr at 2700fps)__18.1____________12.5
.308 Win. 8.0 lbs (180gr at 2610fps)__17.5____________11.9
.338 LM 20 lbs (300gr at 2750fps)____22.7____________8.5
.
So yeah, mine would kick quite a bit more. And tge .308 I shot had a break on and probably was around 12-15 lbs with scope on. I don't know what it would feel like at 8 lbs and no brake. But to me the concussion and noise made me feel like the recoil was too much.
Edit: it's not coming out in neat table like I wrote it but I hope it's understandable.
Shotmy 33 Steath with out break (baseline for Suppressor). Subjectively, it was not a lot of fun. Prone position and all I can say is - Thank Goodness for the suppressor, night and day.
Americans get to have all the fun with guns and silencers. Here in Canada silencers are illegal.
I wouldn't have a problem making or getting a can if I were not going to use it at a gun range.
My last gun range got shut down because people moved next to it before they figured out guns are loud.
So they are making illegal to make guns hearing safe and they shut us down because guns are too loud.
Gun laws in Canada are retarded. Hang on to your 2A my friend. You don't know how lucky you are.
Here's hoping your safe earning gun act goes through.
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