Picked up a Mossberg 100 ATR
- Thread starter BamaMac54
- Start date
steveNChunter
New member
I've heard great reviews on the ATR 100, and then I've heard some that weren't so good regarding accuracy. I would guess it has a lot to do with how secure the action is in the Tupperware stock, and how much the barrel is touching the stock. I'd imagine there's not the best QC on those stocks. But at least Boyd's makes laminate stocks for the ATR.
Sounds like you got a good one. It's getting harder and harder to find a new rifle that (except for the inevitable bad apples) doesn't shoot great by the standards of just a few years ago.
Sounds like you got a good one. It's getting harder and harder to find a new rifle that (except for the inevitable bad apples) doesn't shoot great by the standards of just a few years ago.
steveNChunter
New member
A Boyd's and a glass bedding job would likely tighten those groups up. MOA isn't bad at all for a "cheap" rifle
steveNChunter
New member
Sure. MOA stands for minute of angle.
Without getting into a semi-confusing math equation, MOA when referring to group size is 1" @ 100 yards, 2" @ 200 yards, 3" @ 300 yards and so on.
So theoretically if your rifle shoots MOA groups, it shoots 1" groups at 100, and it will shoot 3" groups at 300. But many other factors usually keep it from working out that way.
Groups should be measured from center-to-center of the two shots furthest away from each other. Five shots is generally a "group" but I consider three shot groups to be a sufficient judge of accuracy for a hunting rifle with a sporter weight barrel.
Glass bedding or epoxy bedding, uses an epoxy adhesive applied to the inside of the stock, where the action sits, and then before it dries, the action (coated with a release agent) is dropped down in to the stock and held in place with moderate pressure until the epoxy dries. This creates a surface inside the stock that is true and fitted to the action, and will keep the action in place and prevent any shot-to-shot movement, which would degrade accuracy. This is sometimes done in conjunction with aluminum pillars in the action screw holes or even shims.
Boyd's sells bedding kits that work pretty good for about $30.
Guys who want to do a bedding job on the cheap use JB weld, and it seems to work pretty good as well.
Without getting into a semi-confusing math equation, MOA when referring to group size is 1" @ 100 yards, 2" @ 200 yards, 3" @ 300 yards and so on.
So theoretically if your rifle shoots MOA groups, it shoots 1" groups at 100, and it will shoot 3" groups at 300. But many other factors usually keep it from working out that way.
Groups should be measured from center-to-center of the two shots furthest away from each other. Five shots is generally a "group" but I consider three shot groups to be a sufficient judge of accuracy for a hunting rifle with a sporter weight barrel.
Glass bedding or epoxy bedding, uses an epoxy adhesive applied to the inside of the stock, where the action sits, and then before it dries, the action (coated with a release agent) is dropped down in to the stock and held in place with moderate pressure until the epoxy dries. This creates a surface inside the stock that is true and fitted to the action, and will keep the action in place and prevent any shot-to-shot movement, which would degrade accuracy. This is sometimes done in conjunction with aluminum pillars in the action screw holes or even shims.
Boyd's sells bedding kits that work pretty good for about $30.
Guys who want to do a bedding job on the cheap use JB weld, and it seems to work pretty good as well.
CarJunkieLS1
New member
Congrats OP I purchased a 100 ATR a few weeks ago and there is my review of it on this site. I'm like you pleased with mine and it shoots right at MOA @ 100yds. For a cheap backup/loaner rifle I couldn't be happier.
steveNChunter
New member
Good call. Are you planning on bedding the action? That's something you might ought to get somebody to help you with the first time or it could get messy/sticky
ATR 100
Recently picked up a scoped ATR100 270 for $259.99 at Academy. The scope (unmarked probably Barska) was so out of focus I thought I was going to have to take it back but after running the lens out about 3/8" it finally came in clear. The bolt was a little tight at first but loosened up after 4 or 5 shots. Take care, the first round caught me off guard since the trigger was set under 2 lbs. Is easy to adjust but I decided I liked it. Needed a 3' target to find paper but after at least a full wheel up and left I found the sweet spot and was shooting 1" to 1 1/2" groups at 80 yds (farthest I can get in my back yard without shooting a neighbor). I normally shoot core lokt but the store was out so I ended up with some cheap 130 gr Monarch. Sore shoulder but extremely pleased with this rifle.
Recently picked up a scoped ATR100 270 for $259.99 at Academy. The scope (unmarked probably Barska) was so out of focus I thought I was going to have to take it back but after running the lens out about 3/8" it finally came in clear. The bolt was a little tight at first but loosened up after 4 or 5 shots. Take care, the first round caught me off guard since the trigger was set under 2 lbs. Is easy to adjust but I decided I liked it. Needed a 3' target to find paper but after at least a full wheel up and left I found the sweet spot and was shooting 1" to 1 1/2" groups at 80 yds (farthest I can get in my back yard without shooting a neighbor). I normally shoot core lokt but the store was out so I ended up with some cheap 130 gr Monarch. Sore shoulder but extremely pleased with this rifle.
Been there
New member
Another thumbs-up on the Boyd's stock, I have 1 on my Savage 110, short action, .243. I haven't bedded mine because it's a hunting rifle , it reliably gives 5 shot groups well under MOA @ 200yds , simply screwed into the excellent Boyds stock.
RCPractitioner
New member
I've been threatening to put a Boyds on my ATR, what trigger guard do you have to order and how much is it?
i say go thumbhole on the boyds stock a swell. i have the peper laminante on my mosin, changes it into a whole nother rifle in terms of performance. the recoil is evenly displaced along the stock
this is what my mosin looks like with nothing but the new boyds stock on it , not is it only functional, but very eye pleasing as well
EDIT(and get the extended recoil pad, they now offer, mine is a little to thin for my taste)
this is what my mosin looks like with nothing but the new boyds stock on it , not is it only functional, but very eye pleasing as well
EDIT(and get the extended recoil pad, they now offer, mine is a little to thin for my taste)
Last edited: